Tagged: RC Nitro cars

AUDI R8 1/6-SCALE AWD SUPERCAR

  The Losi® Audi R8 LMS ultra puts you in charge of a no-holds-barred supercar that matches its great looks with equally impressive features. If speed is what you desire most in an RC car, then look no further.                                                                                                                

At a Glance

The Audi R8 LMS ultra created by the Belgian W-Racing Team was designed to do one thing, go head-to-head in GT3 class racing against the world’s best. The 1/6-scale AWD Losi® Audi R8 LMS ultra honors the W-Racing Team’s creation with an impressive scale model that puts you in charge of a no-holds-barred RC supercar. If speed is what you desire most, then look no further. Featuring a massive 1200Kv brushless motor typically found in 1/5-scale vehicles and an impressive 160A ESC, the Audi R8 LMS ultra surpasses nearly every other RC supercar on the market with speeds of 60+ MPH. To help manage this outrageous power, Spektrum™ AVC® (Active Vehicle Control™) technology has been included. Using AVC you can dial in extra directional stability and throttle control and harness the ridiculous power of this impressive supercar.                                                                                                              

Losi™ 6IX™ Platform

Losi platforms are standouts in the world of RC driving; the 6IX platform is no different. This chassis design is ideal for the trials and tribulations of a supercar and features a solid 3mm aluminum build and shaft-driven AWD drivetrain                                                           

Dynamite® 1200Kv Brushless Motor

Typically reserved for larger vehicles the motor of the Audi R8 LMS ultra delivers brutal speeds and acceleration when you need it most for ballistic top speeds and mind bending drifting.                                                                                                                                                                      

Dynamite® Waterproof Brushless ESC

This unbeatable supercar comes well-equipped for the trials and tribulations of up to 6S of dual LiPo battery power with a Dynamite® 160A ESC pre-wired for with EC5™ connectors. Best of all, the waterproof nature of this ESC means weather won’t slow you down whenever you get the urge to drive or drift.                                                                                    

AVC® Enhanced Spektrum™ SRS4201 Receiver

Thanks to the inclusion of AVC , you can maximize the ridiculous power that’s packed into the Losi Audi R8. Genuine AVC (Active Vehicle Control) technology and extended range 2.4GHz connectivity ensure you can experience interference-free driving, even from afar.  

Impressive Scale Body

From its hood to its spoiler, the attention to detail paid to this supercar body borders on obsessive. To help evoke the look and appeal of its inspiration scale details including official graphics, molded grill, mirrors, canards, diffuser, and splitter put this model miles ahead of other supercars.                                     

Spektrum™ DX2E V3 Transmitter

The Spektrum™ DX2E V3 transmitter features extended range DSMR technology and superior comfort as well as AVC compatibility.                                                                                        

Large Monster Truck Inspired Tires and Chrome Wheels

Massive 6.9 in diameter wheels compliment the monster appearance of the LST XXL 2 and facilitate maximum traction in the most punishing of environments. A custom black chrome finish gives added appeal even while the LST XXL 2 is blurring by at breakneck speeds.                                                                                                                                                                       

18mm Aluminum, Adjustable, Oil-filled, Coilover Shocks

The oversized threaded-aluminum, oil-filled, coil-over shocks on the Losi Audi R8 are built to be as dependable and durable as possible and are optimized for enhanced performance. Threaded bodies and collars allow for easy adjustments and fine tuning.        

   http://www.kqzyfj.com/click-8004097-10881098

1/10 2.4Ghz Exceed RC Rally Monster Nitro Gas Powered RTR Off Road Rally Car 4WD Truck Carbon Orange

Exceed RC Rally Truck Radio Car 1/10 2.4Ghz Short Course Rally Monster .18 Engine 2-Speed Nitro Gas Powered RTR Ready to Run Off Road Rally Car 4WD Truck Stripe Blue RC Remote Control Car                                                                          car1

The heart of the Rally Monster Nitro truck line has always been a .18 engine with reliable and consistent power for tough off-road driving. With revised porting and crankshaft, internal airflow has been optimized for increased power and torque. With the new design 2.4Ghz remote control pistol transmitter is every RC Car Driver dream to get their hands on a full-range 2.4Ghz system.                                                                          car2

FEATURE HIGHLIGHTS:

RTR 100% factory assembled with installed engine and radio gear makes getting started easy The 2.5mm lightweight aluminum alloy chassis provides excellent performance and durability
New lightweight suspension arms deliver quick suspension response and reduce the critical sprung weight and overall weight of the car Oil filled shocks with firm tuned springs keep the wheels on the ground
The new .18 engine features a new crankcase and upgrades to the cylinder, piston, connecting rod and crankshaft, delivers more power, more torque and extra cooling                                      car5

2-Speed transmission for fast acceleration and insane top end speed High capacity fuel tank with perfect caliber makes it impossible to overflow and provides long run times

car4                car11

Excellent differential system design provides quick access to the front or rear differential by removing only few screws. You can now access the front and rear differential for easy maintenance


High capacity fuel tank with perfect caliber makes it impossible to overflow and provides long run times

http://    http://

The (almost) COMPLETE Guide to Electric RC Cars

Hey everyone I’m back for one final Instructable…or one of the last at least. I have recently gotten into the hobby of RC cars and at first I didn’t know too much about, well basically everything. I have decided to help everyone else out by sharing everything I have learned over the last year. And by the way, I appreciate positive comments since this is still a work in progress.  car35

Step 1: The Brands                                                                                      These are some of the biggest brands to choose from for buying an rc car. I know there are plenty more but these seem to be the most popular.

TRAXXAS
Traxxas cars are very fast, durable, and high quality. If you buy one of these, you will very rarely need to replace broken or worn parts. However, these cars and trucks start at about $300 and do not always include a battery pack and charger. To buy visit www.traxxas.com

Exceed
Out of all of these, Exceed cars are the cheapest, but they often require spare parts and a rather high level of maitenence. I own an exceed, so I can personally tell you to only get an exceed if you do not want to spend a lot of money and you are willing to pay $10 for shipping every time a few pieces break. The cars start at $90 and are most of the parts are good quality. To buy visitwww.nitrorcx.com

HPI
HPI cars are not all that popular, mostly because they are as expensive as Traxxas but not as good quality. There is not much I can say about them other than from what I’ve read they have good quality parts and will not need many replacements. To buy visit www.nitrorcx.com or www.hpiracing.com

Tamiya
Tamiya is the classic RC car brand. They’ve been making good cars for more than 30 years. I own the Grasshopper from about 1984 or something but its actually really nice. I have never broken a part on it and I’ve been driving it offroad for a year now. They start around $200 but are reasonably slower than other brands for that price due to the classical “Low-Tech” designs. To buy visit www.tamiya.com

Team Associated
Coming soon

Losi
Coming soon

Step 2: The Car Types  car36car37car38car39car40                                                 There are about 5 car types. I am not going to explain too much about each since they seem rather straightforward.

STREET
These are your average street cars. They are the fastest and the best on paved, flat surfaces. Do not get this if you are looking to drive in your backyard or want something with more power.

DRIFT
Drift cars are like on-road cars but with slick tires. YOu can slide around turns and still get almost as fast as an on-road car. They are good if regular cars bore you but you like to drive fast. Drifting is hard, however, so be warned.

BUGGY
Buggies are a cross between offroad and onroad cars. They are the second fastest on road but the slowest offroad usually due to their low wheelbase. Buggies are good for those who cant decide what type of car they want, since they can use it for both.

TRUGGY
Truggies are also a crossover like buggies, but they are more for the offroad. It basically takes the frame of a Buggy and puts monster truck tires on it. These are the 3rd fastest on road and the 2nd slowest off.

TRUCKS
Trucks are your monster trucks. They are amazing offroad but very slow onroad. They may flip a lot when trying to make high speed turns so these are not the best for on road and you should get these if you want to drive in the woods or in the grass the most.

Step 3: Electric or Nitro                                                                           car41car42                                                                  Now that you know the brands and types of rc cars its time to decide if you want to go with electric or nitro. Here are some of the advantages and disadvantages of each.

Electric
cheaper
“cleaner”
Less Maintence
Better for at-home use
Cars have faster acceleration in general
Limited run times
need to wait hours to recharge batteries
Brushless motors are expensive

Nitro
Longer run times
nice sound
Need to buy gas
Smells bad (my opinion)
a little more expensive to buy the car
cars are more complex (more can go wrong)

Step 4: Electric Motors and ESC                                                                                      car43car44       There are two different types of rc motors. Brushed and Brushless. Each motor type has its own kind of ESC (Electronic Speed Controller). Without an esc, your motor would just do nothing or go full throttle when you wanted to drive. Brushed motors are cheap but very ineffecient and lact power. The ESC’s are also cheaper. Brushless motors are efficient, powerful, fast, and last much longer. Brushless motors and ESC’s do not really have an expiration date, while brushed usually last about 6 months to a year. The main visual difference between the two is the brushless is sealed completely and has three wires, while the brushed has ventilation holes and two wires.

Step 5: Brushless upgrades                                                                    car42                                                                MOTOR RATING

brushless motors are labeled with two things, a large number followed by “kv” and a smaller number followed by “t”. Basically, you need to check the ESC for that motor and read up a little. It will tell u what numbers followed by “t” will be good for your use. So if you want it offroad you will want more “t”, but you will get less “kv”. On-road is the opposite.

KV stands for the amount of rotations per minute per volt. So if this basically means the bigger the number, the faster your car will go. Just make sure if you want your car to drive good offroad you get a motor with the correct “t”.

For example, my brushless motor was a 6000kv 5.5t brushless combo. I checked the ESC and it said you need greater than or equal to 5.5t for on road and greater than or equal to 8.5t for offroad. I got an on-road motor so i could go fast (about 45mph). If you wanted to go offroad you could buy the 4000kv 8.5t motor, which goes about 35mph but has more power. If you do not understand something here pm me. I will be glad to help.

Step 6: Electric Car Layout                                                                                                car45car46                       This is the basic layout for exceed 1/10th scale rc cars and trucks. It has all the parts of other brands but the other brands have things in different places..

Step 7: LiPo or Ni-Mh                                                                                batt1batt2                                                                   Most of the time when you buy a car they come with a battery, but some may not. If that happens, you may be faced with this choice, LiPo or Ni-Mh. LiPo battery packs are the batteries of the future and if given the chance, make the investment. For $10 more you can get a battery pack which will give not only longer run times but also more power. They also do not lose their charge over time. Ni-Mh batteries are cheaper and “safer” (LiPo batteries CAN explode if improperly charged) but in the long run they are not worth it. Spend a few extra dollars and save a lot in the long run.

LiPo batteries are rated by two numbers, and Ni-Mh are rated with only one
the mAh of the battery packs is the capacity of the batteries. The larger the better.

Only LiPo’s are rated with “c” which is basically how fast they can deliver the power. Most battery packs are between 20-30c but you can find some that are 5000mAh 50c battery packs (those are VERY expensive; ~$50) or even an 8000mAh 50c battery pack (around $100) but BE CAREFUL!! Make sure you but a battery pack that will fit in your car!! Some battery packs are larger!

Step 8: How to pick the right car.                                                        car38                                                Okay if you are buying an rc car this is how you should pick it out

pick an answer and go to the # in parenthesis. If there is a hyperlink in parenthesis click it and that is the car or cars that fit you best. (Note. I am including 1/10th rc cars only. These are the “Standard” size but feel free to either go smaller (1/16) or larger (up to 1/5)

1. I want to have a family friendly car that i can drive immediatly when i want to (2)
I want a car that is a little faster but dont mind taking more time to prep and costs more (11)

2. I want a durable car and am willing to spend more money (3)
I want a cheap car that may break in the future (7)

3. I want an offroad car (4)
I want an onroad car (6)
I want something inbetween (5)

4. I want a fast car (E-MaxxSlash_VXL, or Stampede_VXL )
I want a slower but cheaper car (Summit,Slash, StampedeE-Maxx, or a Tamiya )

5. I want a fast car (E-Revo_Brushless,Rustler_VXL,Bandit_VXL)
I want a slower but cheaper car (E-Revo, Rustler, Bandit, or a Tamiya)

6. I want a fast car (Get a brushless HPI on-road car or drift car)
I want a slower but cheaper car (Get a brushed HPI on-road car or drift car)

7. I want an offroad car (8)
I want an onroad car (9)
I want something inbetween (10)

8.  I want a fast car (Rally Monster_Pro or Dynamite-Pro)
I want a slower but cheaper car (Rally Monster or Dynamite)

9. I want a fast car (Champion_Pro or Drift_Star_Pro)
I want a slower but cheaper car (Champion or Drift_Star)

10. I want a fast car (Sunfire_Pro)
I want a slower but cheaper car (Sunfire)

11. If you want a nitro car you’re on your own. sorry.

Look I know there are pleanty more choices for each section but I just wanted to give everyone an idea about what the car they want may look like and so on. There are more cars you can buy then I listed so please understand that.

You’re all done. Now go research the the cars that match your style and find out which one to buy. It is smart to research simmilar cars also. Just keep in mind what you will want for the future. I made this mistake and now I have to pay a lot more money to maintain my car.

Step 9: Recommended Accessories and final tips. car47                       I would definintely recommend buying a complete extra set of tires for your car and some CA glue the day and minute you buy your rc car. The tires wear very quick so be prepared. I highly recommend making an investment when you buy your car and get a good quality one. I promise you it will pay off in the long run. I know from experience and I believe that over about a 2-3 year period, the amound of money spent on most cars and spare parts, no matter what the quality, will be about the same. Dont be a cheapskate…unless you are under 18. If you are not sure on the car you want to get there are pleanty of forums out there about the specific car you may want. Please just research before you purchase, I don’t want anyone crying to me because I said they shoud get this car and they hate it.

Step 10: More coming soon!!                                                                                             Credits:http://www.instructables.com/    http://  Shop Amazon – Give the Gift of Amazon Prime

Short Course Racing Tips—5 Tips For Faster Laps

car29

Anyone with any racing experience will tell you that jumping from class to class isn’t as easy as just selecting a new model on your transmitter and picking up a new truck. And, many people think that because the scale appeal of short course attracts so many newcomers to the hobby that the class is for beginners and thus easy. The point is that short course racing takes just as much skill as any other class and even experienced racers can have a hard time adapting and succeeding. If you want to run at the front of the pack, check out these five tips:

 

1. Momentum

Racing is all about going fast, right? Well, if you’re constantly flying into corners, spraying dirt everywhere and ripping down the straights, you’re doing it wrong. You might feel like you’re going really fast and that may work to some degree with an overpowered truggy, but it’s the slow way to get a short course truck around the track. This is especially true if you’re in the 17.5-turn class. You can get away with a little bit of a heavy-handed driving style with 4WD class short course truck, but it is essential that you drive smoothly.  You should drive like you have an egg strapped to your truck. Drive smoothly and try to keep your truck always rolling.

car31

2. Stay Out of Trouble

I lot of people think short course is the class where it’s OK to beat and bash. Let them think that and let them smash into each other. Just keep your distance and let the action unfold—don’t be a part of it. You’ll lose far less time by slightly hanging back in comparison to getting involved in a wreck. Think about the time you lose when you crash and then have to wait for a corner marshal as compared to when you just ease back a bit and wait for the right time to make a move. We’re talking the difference between ten seconds and a tenth of a second or maybe the difference between first and third.                                             car32

3. Passing vs. Catching

There’s a difference? There very much is a difference between catching someone and passing them, but you’d never know it watching the typical RC race. Most racers just race as fast as they can try to get around people as they catch them. It sounds good, but catching and passing are simply two different acts. When you catch someone think about whether you’re at a good place to pass. Some slow cars can be blown by down the straight, but keep in mind that a phenomenon called target fixation almost always occurs when you try to pass someone on the straight. They focus on your car and essentially subconsciously drive right into. It looks like they’re trying to squeeze you off the straight, but usually it’s just an unintended rookie type mistake. The point is it’s almost always better to pass in corners. Drivers of equal ability will take some work (that’s what makes racing fun), but there is usually a corner or two they go wide on and most newer drivers are usually easy to pass on the corner going into the main straight as the almost always fly in wide and get back on the gas too soon. Just slow to the inside and out accelerate the on exit.                                                                                                                                                  car30

4. Like a Sports Car

Short course trucks are just like sports cars. Makes perfectly good sense…if you have experience with the racing of full-size cars—either as a driver or an entrenched fan. You see, sports car or road course racers know that you brake in straight lines and accelerate in corners. This is the foundation of proper performance driving. You should be 100% done slowing down before you get to a corner and you should be accelerating through and out of the corner.                                                                                                         car33

5. Practice Smart

There may be no such thing as bad practice, but some practice is definitely better than others. Most racers get their practice in by showing up early on race day. They’ll get there hours before they really need to and then spend most of that time shooting the bull with the other “diehards” that show up at the crack of dawn. When the early birds do hit the track it’s on a dry track that is nothing like the one they’ll race on. Experimenting with tires and setup at this stage is completely pointless as while that practice is valuable, the track is simply nowhere near race shape. It’s far better to stay late and drive on the track after racing has concluded. Check with the race director first, but most don’t mind and you’ll be running on a track in is much closer to race condition. This is the time to try every tire combo you can think of and mess with your shocks.                                                                                                                                         car34                                                                                                             Credits:  http://rctruckstop.com/   http://

 

RC General Buying Decisions

veh1Radio controlled vehicles/craft can be fairly cleanly divided into two categories, toy and hobby-level. The toy type are what most people think of when you mention “RC” — buy-and-drive playthings that you can purchase from a toy or electronics store. These are made strictly for the sake of fun. Then there are the more sophisticated and capable models targeted towards hobbyists who want to go faster, tinker with settings and upgrades, and perhaps participate in one of the many levels of established competitive events. Neither class of RC is necessarily “better” — they each have their positive and negative qualities. However, when you’re first starting out, it’s very worthwhile to choose which way you want to go up front, long before you pull out your credit card. This article presents the most important facts that can help you make an informed decision.                                                                                                                                            

Cost

Toy R/C cars & trucks that you can buy at places like Toys R Us or Walmart start at $20-25 USD, and the most extreme ones top out around $150. Toy R/C planes start at around $30. When you step up to the hobby level, you’ll be hard pressed to find something complete for under $130. It’s very easy to spend $400-500 on a 1/10th scale car or truck that will last awhile, and a fully upgraded rig can easily shoot up to $2,000-3,000 USD.

Speed

In most cases, there’s really no comparison between the performance of toy and hobby-level RCs. Most toy cars & trucks will go anywhere from 5mph to 15mph, with the fastest few doing 20-24mph. Hobby-level RCs generally start at 15-25mph for electrics and 25-35mph for nitro versions. You can get monster trucks that will do over 40mph out of the box, and low-slung street cars that will do over 60 with no upgrades or modifications. In planes, the toys generally go around 5-15mph, while there are hobby-class craft that will do 30, 50, even 80mph in factory stock form. The most extreme speed differences are in boats. The toys often putt and crawl along at 1-5mph, while the hottest hobby-level racing boats will skim the surface at over 100mph

Durability

Mostly because they’re slow, toy RCs tend to handle more abuse than their more expensive cousins. The most common things to break are bumpers and body trim. The land and water-borne vehicles are built with a lot more material than is necessary, while aircraft tend to be constructed of foam and flexible plastics that bounce back after being bent. However…

When they break…

Repairing a toy RC is sometimes not worth the time & effort. Nearly all use multifunction circuit boards that combine several major functions, so if something goes electrically wrong, you have to change out the whole thing. Most manufacturers don’t have a factory service program, so you have to do the work yourself. Many don’t even offer a way to order new parts. Nikko is a notable exception. You can call them, tell them exactly what vehicle you have, describe the problem, and order precisely the part(s) you need. Many RC’s available at Radio Shack are actually from Nikko and are covered by this same level of support, with the additional convenience of being able to go back to the store and special-order your parts in person.

Fixing hobby-level RCs is, in most cases, a completely different affair. You can disassemble anything yourself. With most popular brands there are manuals and exploded views. There are service departments that handle returns of defective components. Electronics are, with rare exception, separated by function so that you don’t have to change your speed controller if your radio receiver crystal goes bad. Parts are available at brick-and-mortar hobby shops and dozens of trusted, popular web sites. There are online forums (message boards) where you can ask other hobbyists for advice and learn from their experience. veh2

Upgradability

These days, ever more toy RCs have upgrades available for purchase from the original manufacturer, particularly amongst the smaller “micro” cars and trucks. These upgrades can range from different body kits to stickier tires to faster motors. They’re generally very easy to install, requiring at most a small screwdriver (which is often included) and 15 minutes, and can dramatically change the look or performance of the vehicle. They’re also great fun to install and let the owner add a bit of their own personality.

The most popular hobby RCs may have literally hundreds of upgrades available from many different aftermarket sources (companies other than the original manufacturer). Among the available upgrades may be anything from scale-realistic wheels to anodized aluminum struts in various colors to larger motors/engines to total conversion kits that fundamentally change the vehicle. Many hobby-level RC parts are reusable from one vehicle to another, especially electronic components and motors/engines. Popular RC models come with the support of other owners nationwide or around the world who share their experiences, tips, and home-grown modifications freely on the Internet.

Controllability

Toy radio systems traditionally give you forward/reverse (or up/down) and left/right direction control. A growing number of cars & trucks these days now have “digital proportional” steering to boot, which gives you a number of steps between neutral and full turning, depending upon how far you turn the wheel or push the stick on the radio transmitter. Some, though, only let you go straight forward or to turn one pre-set direction in reverse. Toy helicopters are what you have to watch out for the most, as these sometimes give you only one axis of control — go straight up, or come straight down. Most toy RC’s are still only available on two frequencies (e.g., 27mhz and 49mhz in the US), with a few now offering 3 to 6 possibilities. This limits the number of vehicles that can run at one time, but more unfortunately it reduces the possibility of even being able to run two random vehicles together.

Hobby-class radio systems give you 64 to 256 (or more) steps of control in each direction for what feels like perfectly smooth turning & throttle control. These systems can also be easily changed between anywhere from 6 to 30 different frequencies, so even if the one person you want to race against or fly with has an absolutely identical radio setup, for around $20 and with a one-minute part swap, you’re both in the clear. Still better, the most recent generation of radio systems, while expensive, operate on an extremely high frequency and use small computer chips to automatically search for and lock onto an open channel, ensuring that you’ll never have a frequency conflict.

Raceability

Toy RCs can be raced between siblings or friends around the neighborhood, but there’s generally no sanctioned racing. Hobby-level RCs are raced around the world in local, regional, national, and even international events, even including multi-track tours.

Ownership

When all is said and done, the purchase decision between toy & hobby-level RCs should always come down to who the purchase is being made for. You don’t want to buy a $390, 45mph nitro-powered car for a 6-year-old. Likewise, a 16-year-old who wants to get into RC racing for sport wouldn’t be well-served by a $39 toy. What’s really interesting is the 26-year-old with a $25 micro-sized monster truck who would derive hours of fun from chasing his/her cat around the kitchen floor or gingerly driving around a makeshift desktop obstacle course during lunchtime at work. Before you buy an RC, know who you’re buying it for and do a little research. That extra time spent up front could make the difference between tremendous fun and awkward disappointment. Credits: http://www.beginningrc.com/ http://

Owning And Operating A Nitro Powered Radio Controlled Car Or Truck

Nitro RC Cars

by :nitro1Owning and operating a nitro powered radio controlled car or truck adds an element of excitement and realism to this hobby above and beyond that provided by the electric RC counterparts. Unfortunately, it also poses some unique challenges. The one question that is posed to me the most often is ‘how do I start a gas powered RC car’?

Well, first of all, you need to assemble a few necessary items. These can be obtained either individually, or purchased as a package with or without your radio controlled car or truck. You will need the correct nitro fuel, a glow igniter, batteries for your radio transmitter and receiver, and a small screwdriver.

Have your glow igniter fully charged and ready to use. Make sure you have installed batteries in your controller (transmitter) and the car’s on board receiver. Verify that they are functioning properly by operating the steering, throttle and brake. After all, you want to be able to control your RC car once it is running! Fill the car’s fuel tank with the proper nitro fuel. Be careful  fuel is extremely flammable and toxic! Check with your engine’s manufacturer or your local hobby shop to make sure you are using the recommended nitro mix. 20% is the most popular. OK? Now we are ready to fire her up.

Clip the glow igniter to the glow plug located in the top of the engine cylinder head. Rotate the engine by whatever means your car or truck uses such as manual pull recoil, on board electric starter, drill operated shaft starter, or portable starter box. You may have to ‘choke’ the engine to initially supply fuel to the carburetor. You can easily do this by placing a finger over the exhaust outlet. Watch for fuel movement through the fuel hose so you know when fuel has reached the carburetor. You don’t want to flood the engine!

Once the engine has started and is running smoothly, you can remove the glow igniter. Drive easy for a few minutes until the engine warms up a little. After warm up you may find it necessary to adjust the carburetor high speed needle, low speed needle, or idle speed set screw to maximize performance.

This might all seem intimidating to you, but it really isn’t hard to learn with a little practice and patience. The sound of that high performance nitro engine springing to life makes it well worth the effort!
sources www.hobbiedown.com and actionvillage.com

Step 1: how to drive you Gas RC car.                                                   nitro2nitro3                      I no most people think its easy to drive but most do not.
Step1
Realize that your controller works just like the steering wheel on your regular car. When you move it to the left, your RC car moves to the left and when you push the controller to the right, your car moves to the right.
Step2
Drive as fast as you can the first few times you take your RC car onto a new track. This will help you get a feel for the track without worrying too much about making a mistake.
Step3
Stick to the middle of the track instead of trying to hug the edges. Your lap times might not be as good, but at least you won’t drive your RC car right into one of the track barriers.
Step4
Look for lines or the areas of the track where more experienced racers drive their cars. This should give you an idea on how to lower your lap times.
Step5
Draft with other cars just as you would if you were racing NASCAR instead of driving an RC car. Not only can you increase your speed, but you can also see where other cars are running and what spots drivers are avoiding.
Step6
Be consistent any time you drive your RC car. The more time you spend racing and practicing, the better you’ll get.
ive but most dont.

Step 2: gas rc car safey                                                                              nitro4nitro5nitro6Safety Issues and Rules for Responsible RC Car & Truck Operation
Be a safe, courteous, and responsible RC car or truck owner and operator. Protect yourself, those around you, and your RC vehicles by using common sense and following certain guidelines for safe use of radio controlled cars, trucks, motorcycles, tanks, bulldozers, and other RC ground vehicles.
Control Your Controller
Before you run your RC: Controller on first, vehicle on second. After you run your RC: Vehicle off first, controller off second.
Choose a Safe Area to Operate Your RC
Choose a safe, open area to operate your radio controlled vehicle. Avoid people and busy streets.
Check Your Frequency
Check your frequency and make sure no one in your operating area is using the same frequency at the same time you are.
Check for Obstacles Before Operating Your RC
Survey the area that you will be driving in and make sure it is clear of undesired obstacles… i.e. stumps, large rocks, puddles of water, or other obstructions.
Avoid Spinning Wheels
Do not pick up your vehicle while the tires are still moving.
Handle and Store Nitro Fuel Safely
Nitro fuel is highly flammable. Avoid open flames — including smoking — around nitro containers. Mark your container for identification.

Step 3: Nitro RC Operation And Maintenance                               nitro7Nitro RC Operation and Maintenance
A nitro RC has many more parts than most electrics. There are also specific operational and maintenance requirements from engine tuning, to break-in, to after-run maintenance. Learn how to keep your nitro RC glow engine at peak performance levels. And when your nitro engine won’t run, do some troubleshooting to isolate and fix the problem.
Nitro Troubleshooting @
Nitro Engine Break-in Procedure
Proper nitro engine break-in is critical for long-lasting performance of your RC. Every new nitro engine should undergo a break-in procedure. If you do nitro engine break-in properly, the up-keep on your RC vehicle is less costly than if the procedure is done hastly and incorrectly. Be patient.
Adding After-Burn Oil
After running your RC for a while you have to perform after-run maintenance. Part of that after-run maintenance includes lubricating the pistons and all the internal parts by adding after-burn oil to the engine cylinder head.

Step 4: Carb ajusting.nitro9nitro8                  How does the carburetor work and how do I adjust it?

We got the theory part of the engine under control. We can’t really tune a piston or adjust a crank-shaft, at least not in your every-day engine maintenance and adjustment. So without further delays lets dive into the 2nd phase of this project& The Carburetor. What good is a 1.2 HP engine if you can’t keep the dam thing running? That’s exactly my point, it does not matter how little horse power your engine has, if it can stay running for the entire duration of the main then you will have a real good change to at least get one of the top three positions. They say that before you can win a race -first you must finish. The first part of finishing a race it to have a well tuned engine. In this article we will go over how a carburetor works and how to adjust it. Without any further delays lets get busy!

Carburetor Theory

The carburetor has one main function, to regulate engine speed. It accomplishes this by metering the amount of air and fuel as required, to sustain combustion per the input of the throttle servo. Thus for a low-speed idle you would have a small amount of air and fuel entering the engine. This would in effect lower the chemical energy entering the combustion chamber and thus lessen engine power and subsequently lower the RPM. As we open the throttle the carb will allow more air and fuel into the combustion chamber, thus increasing engine power and RPM’s (revolutions per minute). Now that we know what the carb. has to do lets explore the underlining fluid mechanic properties that allow the carb to function effectively at different throttle settings.

The Venturi-Effect

What allows the carb to pull fuel from the fuel tank is the venturi-effect. This states that in a converging funnel the entering fluid velocity increases as it passes through a reduction in the funnels throat diameter. This increase in fluid velocity decreases the localized pressure at the venturi throat to below atmospheric pressure. This low pressure region is precisely where fuel enters the carburetor throat. This is what allows the engine to “suck” fuel from the gas tank. The truth is that the venturi-effect is all that is needed for the engine to get fuel. Pressurizing the fuel tank is really only done to decrease the effects of fuel level on the mixture setting of the carburetor.

Fuel Metering Devices

The venturi-effect draws fuel from the tank but does little to regulate it’s flow. It’s true that as the engine accelerates the amount of air that moves through the engine increases. The increase in air velocity also increases fuel flow into the induction port, this helps the engine self regulate the fuel up to a certain point.

This is not the only means for the carburetor to meter air and fuel. Engines need a metering device to help regulate the amount of fuel that enters the carburetor. This is accomplished with an adjustable orifice, typically we call them needles or jets. Most engines have a second adjustable needle that helps regulate fuel at low throttle settings. By adjusting these two needles we can control the transition from low to high speed operation of the engine.

How do we adjust a carburetor?

The carburetor is typically adjusted with a long flat-head screw-driver. Carb adjustments are then done by rotating the needled in, our out of the needle seat. The idle speed is adjusted by a screw at the base of the carburetor. This allows the throttle barrel to only close to a preset position.

The carb has three main adjustments that allow you to set the following:

1. Set the idle speed.

2. Set the mixture at idle (Adjustable on 2-needle carbs only).

3. Set the high speed needle mixture and control engine temp

How to make carburetion adjustments:

Idle Speed:

The throttle stop screw or idle-speed screw (same thing) determines how far the carb barrel will be able to close when the servo is in the neutral position. Typically you set the servo/throttle linkage so that the carb will go from fully open when the trigger is fully pressed to fully closed when the trigger is in neutral. Then you would adjust the idle-stop/speed screw so that there is a 1-2 mm gap when the servo is in the neutral position. You might need to readjust the spring collars on the throttle linkage to force the throttle arm against the idle speed screw.

Tip#1: If you completely mess up the carb setting and you want to go back to the factory recommended needle setting then you must have the carb fully (Yes I mean fully closed) before you can set the low-speed needle to whatever turns the engine manufacturer suggests. Before you close the carb fully back the low-speed needle a bit to make sure you wont put un-needed stress on the needle seat.

Tip#2: There should be no speed change whatsoever when the car is in idle and when you hit the brakes. If the engine’s RPM drop either your linkage isn’t set right or the idle-speed screw is set too loose. Tighten clockwise until the carb barrel doesn’t move when you go from neutral to full brakes.

Tip#3: Some RTR kits have servo horns that are too small. There is not enough servo throw to open the carb barrel, if you use servo trim to be able to open the carb fully, then when you go to neutral the carb doesn’t close enough. To compensate for this the novice engine tuner opens up the low speed needle to drop the engine RPM so the car will stay still when at idle… The drawbacks of correcting the linkage problem with the mixture control is that now the low-speed is too rich and the car won’t idle for more than a couple of seconds before the engine sputters and dies.

To fix this problem you need to get an after market servo horn that is larger yet still fits your particular servo brand. Now you can go from fully open to fully closed, without using trim. Now you wont have to compromise the carb settings because of lack of servo throw.

Low-Speed Needle:

At this point you would start the engine warm it up and commence tuning. Adjust the low-speed needle clock-wise until the engine doesn’t sputter when at idle. You want a fast idle, if the car wants to move forward a lot, then turn the idle-speed screw counter clock wise to lower RPM until the engine just barely want to engage the clutch. It may take a little time to get the settings right.

Remember you want the fastest idle you can get away with. It will make the engine more stall proof. Some engine will overheat if the idle isn’t rich enough, you need to experiment to determine what’s the right setting for your particular engine. When every thing is set right the engine will be able to idle through an entire tank without missing a beat.

High-Speed Needle:

The high speed needle will control fuel flow into the carb from 1/2 to full throttle. Typically the high speed needle is set to allow the engine to reach it’s peak power point, then you open the needle slightly and go racing. On very hot and humid days you will probably have to make a compromise in the tuning department. For most this will mean you will richen up the high-speed needle to lower engine temperatures to acceptable levels. Everyone has their own interpretation of what an acceptable engine temperature is, for me anything under 260 is acceptable. Going higher will typically mean shorter engine life-span and less reliability.

Step 5: Glow Engine tuning basics                                                      nitro10nitro11                        Understanding Your Engine
The first and foremost consideration when attempting to tune your glow engine is understanding the basic parts and their functions. By understanding the fundamentals, you can better tune your engine for maximum performance while at the same time, expanding the life of your engine.

Carburetor
The carburetor is the mechanism that mixes fuel and air in very specific proportions and passes it on to the engine through the vacuum intake. The natural operation of the engines causes of flow of gases to pass through the engine (through the carburetor) and out the exhaust manifold and on to the pipe or muffler. The exact mechanism for this is unimportant for the scope of this tutorial, however it is important to realize that air and fuel pass into the engine by this vacuum method. Depending on how you adjust your carburetor, you can either adjust how much of this gas/air mixture reaches the engine and to what proportion of gas to air passes on to the engine. By reducing the amount of fuel per volume of air, you are making the mixture “lean” and by increasing the amount of fuel, you are making the mixture “rich”.

The two types of carburetors are slide and barrel. The old-style barrel carburetors still dominate the market because of their simplicity in design and because of the tendency for designers to hang on to legacy design. These have been around since the beginning of glow-fuel planes. They control gas/air flow by rotating a barrel with a hole cut in either side that allows varying amounts of gas/air mixture to flow through the carburetor as the hole opening enlarges to the venturi (air shaft down the center of the carb body).

Idle-Speed Adjustment
This is the most basic and easy to understand part of tuning your carburetor. This spring-tensioned screw limits the closure of the barrel aperture. Although this doesn’t affect the mixture of the fuel it does affect the idle speed. The more closed the aperture is, the slower the idle, the larger the aperture, the faster. As you close this aperture up and the idle speed decreases, you will eventually (sooner than later) stall the engine out. In order for the engine to run, it must have enough inertial energy built up in the engine and flywheel to carry it through the entire ignition cycle. Generally speaking, you want to adjust this down to the slowest idle, just before it begins to stall.

Low-End Mixture Adjustment
This adjusts the fuel mixture at or near idle. Some engines lack this low-end mixture valve for reasons of simplicity, however this makes accurate tuning difficult.

For barrel carbs, this mixture valve is generally found where the throttle-arm pivots. Some are countersunk, others are clearly visible from the outside. On slide carbs, they are generally found on the opposite side of the carb from the throttle slide shaft (has an accordion billow type rubber boot over it) next to, but below the fuel-inlet and high-end mixture valve.

High-End Mixture Adjustment
Also known as the Main Needle adjustment, this is the primary fuel mixture adjustment. This is generally found on the top end of the engine, typically next to where the fuel line goes into the engine. Some are flat-head screws like the low-end mixture, others are hand adjustable valves.

Tuning Basics

It’s important to understand that there is a reputation for glow-engines to be difficult to tune. This is a common error in thinking. With a little bit of know-how, tuning a glow engine can really be a simple, pain-free process. People that don’t properly understand the basics can easily become frustrated by what should be a simple, straightforward process. Here’s how you do it:

Dialing it In
For the purpose of this tutorial we are going to make some basic assumptions. First, we’re going to assume that the rest of your car or truck is properly functioning and that you have everything ready to go. Second, we’re going to assume that you are able to start your engine and that it at least runs for a second or so.

The first place to start with dialing in your engine is to make sure that you have your idle-speed properly adjusted. Your engine manual should give you specific instructions on setting the aperture gap to the minimum size. It’s important that we get this resolved before continuing on. If your engine can’t get enough air/gas flow then it won’t start/run. A clockwise rotation opens the aperture and increases the idle RPMs, a counterclockwise slows it down.

Second, you should tune the low-end mixture valve. This is done before the high-end (main needle) adjustment because an improperly adjusted low-end can affect the high-end performance. Like most mixture valves, clockwise rotation will “lean” the mixture and a counterclockwise will “richen” the mixture.

To determine whether the low-end mixture requires tuning, allow the engine to warm up completely, and then allow it to idle, uninterrupted for one full minute. If the engine continues to run after the minute is up then your low-end mixture is correct and you’re ready for the high-end adjustment. If it dies on you then there are two possibilities; either you are running too rich or too lean. To determine which is the case you must listen for how the engine dies in its idle test.

If the engine’s RPM’s rev up at the last second and then the engine dies than you are running too lean. To correct this, turn the low-end mixture screw counterclockwise (out) 1/8 of a turn (always make adjustments in 1/8 turn) and retry the idle test.

If, on the other hand, it begins to wind down and you notice a change in how the exhaust sounds in the last few seconds, then your engine is running too rich. To correct this, turn the low-end mixture screw clockwise (in) 1/8 of a turn and then retry the idle test.

Once you have passed the idle test and are able to idle for one full minute (after first warming the engine up, of course) you are ready to continue on. You may have to repeat the above process a few times until it is properly set. Remember, only adjust the screw 1/8 of a turn. It’s far too easy to go too far with the adjustment. Setting changes don’t always take effect immediately. You may have to run your engine for a few minutes for the full effect to take place.

Now that you have dialed in your low end, any carb mixture problems can be isolated to the high-end (main) mixture adjustment.

Acceleration is the tell-tale sign of how to tune your high end. If you hit the throttle and it takes off suddenly but then suddenly dies or loses power then you have your main mixture set too lean. Try backing (counterclockwise) the main mixture needle out 1/8 of a turn and retry. If it bogs immediately when you hit the throttle (sounds like it’s choking), then it’s most likely running too rich. Try leaning the mixture out by screwing the main mixture valve in (clockwise) 1/8 of a turn.

The more accurate way of really dialing in the top-end is to take the engine’s temperature. A properly tuned engine should run between 210� and 220� Fahrenheit. This can only really be ascertained by using and infra-red thermometer such as the type used by automotive mechanics. On-board or direct-transfer types that measure the heat from the head are inaccurate because, assuming the head is properly dissipating heat, it would reflect a lower than accurate temperature as a majority of the heat energy would be dissipated from the exposed surface of the head. By “looking” at the temperature near the core (actually, area immediately surrounding the glow plug) the temperature can be more accurately read.

The cheap but easy alternative would be to drop a bead of water down the head on the glow-plug and see whether it boils off. If it slowly simmers than it probably is running right around 212�. If it boils to quickly then it’s probably too lean and needs to be richened. If it just sits there and doesn’t boil at all, then its running too rich and needs to be leaned out.

An engine that is running too lean will run hotter and exceed the 220� degree limit. This can significantly reduce the life of your engine. Although it may be tempting to run your engine as lean as possible (does give a short-lived performance boost), this should only be done if you are very wealthy and like swapping engines out every race. There is no quicker way to kill and engine, honest. This is simply because as you lean the engine out, it gets less fuel to the engine, and more importantly, less lubricant. Since glow fuel is the only means of lubrication for your engine, the lack of it means certain death to your powerplant.

A few final do’s and don’ts…

    • Give your adjustments time to take affect. Remember that most adjustments won’t be immediately noticeable. You need to drive your engine through it’s full range for at least a minute. Make sure you make adjustments in 1/8 turn adjustments only!
    • Always run on the rich side. It’s far better to take a slight performance hit than to turn your engine into a paper weight. Running too lean may give you a temporary thrill, but it’s short lived. Your engine must get the proper amount of lubrication at all times.
    • Changes in temperature affect your tuning! Whenever the outside temperature changes you will most likely need to re-adjust your engine. Warmer temperatures require a leaner setting where colder temperatures require a richer setting.

 

I hope that this info gets you on the right track. If all fails, it’s always a good idea to get expert advice from the vets down at your local track. However, be aware of the guy that’s too eager to give you advice on how to get that extra performance boost out of your engine. Unless he or she plans on buying your next engine, I would be weary of any such advice.

Good luck!

Step 6: Engine Maintenance.                                                                nitro10nitro11                         day-to-Day Maintenance

There are three basic steps one should take on a day-to-day basis to ensure you continue getting the most from your engine:

1. Keep your engine clean on both the inside and outside. By keeping pariticles of dirt out of the workings of your engine, the operating surfaces will remain smooth and therefore less wear and better performance will result. Always use a fuel filter between your tank and the engine to catch any particles in the fuel. When operating in dusty conditions, use an air filter on your carb to keep particles out of your air intake. When done for the day, use a motor spray to clean off the dirt from the outside of the engine, especially the carb and linkages.

2. Use an after run at the end of the day. Since fuel contains elements that are hydroscopic (they abosrb water), any fuel left in an engine will attract moisture and therefore contribute to rust. It is important that you run the engine dry after your last flight or run to remove the last of the raw fuel. This can be done by simply pulling the fuel line from the engine and letting the engine run out. Apply several drops of after run oil into your carb and turn the engine over to ensure the oil gets distributed throughout the inner workings, coating the metal and protecting it from rust.

3. Ensure all of your nuts and bolts are tight. Between flying or running sessions, check that all of your bolts, such as the head bolts, backplate bolts, muffler bolts, engine mounting bolts, and carb mounting screws, are tight. Also, check that prop nut to ensure you won’t be launching a spinning prop on your next flight. An over revved engine, particularly a four stroke, can cause damage without the load of a prop or flywheel.

End of Season Maintenance

When the flying season is over, a small amount of engine care can ensure a successful beginning to the following season.

Clean Engine with Motor SprayRemove your engine from the model and give it a visual checkessentially perform the same checks you would do at the end of a day. Make sure that all bolts are in place and tight. It is not necessary to disassemble the engine unless you feel that there is internal damage or that the bearings require replacing. Replace any stripped bolts or rough running bearings. Clean the entire engine with motor spray to remove all dirt. Finally, load up the engine with after run oil, turning it over to ensure that all moving internal parts are covered. This will go a long way to reducing the chance of your engine rusting in the off season. Store the engine in a baggie to keep the dirt out and the oil in!
Beginning of the Season

The first thing to do before re-installing your engine is to replace the plumbing in your model. Remove the fuel tank and take out the rubber stopper and all brass and silicone tubing. There are components in the fuel that break down brass over time and if left, the tubing will eventually crumble or at the least allow air to enter the line. Clean the residue from the tank itself with a bit of isopropyl alcohol and then install a new rubber stopper assembly with new brass and silicone tubing. Reinstall your tank.

Take your engine from its baggie and use spray motor cleaner to get the after run off the outside of the casing. Re-install your engine to the model. When you are ready to run your engine, remove the glow plug and flush fresh fuel through the engine, turning it over with your thumb over the carb. This will clear out the storage oil. Replace the plug and start your engine as normal. http://  http://Amazon.com – Read eBooks using the FREE Kindle Reading App on Most Devices

Off-Road RC Car Tuning Guide

Need More Steering?
• Batteries – Move batteries towards the front of the vehicle.
• Front Shock Mounting – Move the lower shock mount towards the outside
• Front Camber Link – Longer camber links increase steering
• Front Ride Height – Lower the front ride height
• Rear Ride Height – Raise rear ride height for more high speed steering
• Rear Shock Mounting – Move upper mount towards outside
• Wheelbase – Lengthen the wheelbase for more steering
• Rear Toe-in – Decrease rear toe-in
• Ackerman – Use less Ackerman for more sensitive steering                                                                               offroad1                                                                                                             Need More Traction?
• Batteries – Move batteries towards the rear of the vehicle
• Rear Ride Height – Lower rear ride height
• Rear Camber – Less camber (0 -1 deg.)
• Camber Link – Longer camber links
• Rear Shock Mounting – Move upper mount towards the inside
• Wheelbase – Shorten the wheelbase
• Rear Toe-in – Increase rear toe-in
• Slipper – Loosen slipper so wheels don’t spin as much                                                                                             offroad2                                                                                                                 Need Better Jumping?
• Shock Oil – If bouncing too much or bottoms out over jumps, use heavier oil
• Shock Pistons – If bottoming out over jumps, use smaller hole pistons
• Rear Shock Mounting – If bottoming out over jumps move upper mount towards he outside
• Battery Position – If nose high during jumps, move battery forward, move rearward if nose is down during jumps
• Weight – Add weight to nose if it’s too high during jumps                                                                                     offroad3                                                                                                                              Need More High Speed Steering?
• Front Toe – More toe-in gives you more steering coming out of the corners
• Front Caster – Less caster gives you more steering exiting corners
• Rear Ride Height – Raise rear ride height for more high speed steering                                                            offroad4                                                                                                                    More Stable Over Rough Tracks?
• Anti-squat – Less anti-squat allows better acceleration on rough tracks
• Rear Camber – More negative camber is more stable on bumpy tracks
• Rear Camber Link – Shorter camber links is more stable on bumpy tracks
• Front Shock Mounting – Move lower shock mount inside for bumpy tracks
• Battery Mounting – Place in the middle for most stable on all tracks                                                                 offroad5                                                                                                                   Credits: rcracingusa.net  http://     

Modifying Your RC Motor

Nine Easy Go-FastMods- It’s no question – the sensation of speed is one of the most popular aspects of radio control. Racers and bashers may differ in many ways when it comes to how they enjoy their favorite hobby, but they both share their desire for faster acceleration and higher velocity. From cleaning and oiling bearings to installing more horsepower, there are many ways to make your car faster – some without spending any money!

mod1 http:/  I dug deep into the RCCA archives for this gem – nine easy go fast mods. Enjoy the read, then start wrenching – after all, you’ve got races to win…even if they’re just down the street.

MAXIMUM VELOCITY MINIMUM EFFORT
Words: Kevin Hetmanski

Who doesn’t like to go fast? Nobody. Who wants to go faster? Everybody! Without spending a lot of time or dough, following these 8 tips will help you add a few more miles per hour and a little more distance between you and the second-fastest guy on the block. Think of them as “speed reading.”

POP THE CARB RESTRICTER

If you remove the carb restricter, you can uncork an extra mph or 2 as well as some snappier acceleration.

SPEED INCREASE ª 2MPH

Most nitro cars come with unrestricted carbs, but if your carb has a restricter (such as on this Associated GT2 RTR), you can gain a few mph by popping it out. When we tested the GT2 RTR, removing the restricter added 2.7mph and made the throttle punchier, which is great on pavement and other high-grip surfaces but can cause spin outs in low-grip dirt. So, if you pop the restricter, keep it in your toolbox; you may want to put it back in!

USE A 7-CELL OR LIPO PACK

Upgrading to LiPo power will save more than 3 ounces of weight and increase voltage for a significant speed boost.

SPEED INCREASE ª5 TO 10MPH

Boosting voltage is an easy, no-mod way to increase the speed of any electric car, provided your speed control can handle the extra juice. If you switch from a 6-cell pack to a 7-cell, you’ll increase voltage from 7.2 to 8.4 volts and have a significant increase in off-the-line punch and top speed. You can get a similar benefit (along with reduced weight and increased run time) by switching to LiPo power. A 2-cell LiPo pack delivers 7.4 volts; that doesn’t seem like a big voltage gain, but it does make a very noticeable difference in performance because the pack is also 3.5 ounces (give or take) lighter than a sub-C pack.

RUN FUEL WITH A HIGHER NITRO PERCENTAGE

More nitro means more speed-producing power.

SPEED INCREASE ª2 TO 5MPH

More nitro means a bigger boom with each combustion cycle, and that means more speed (or at least you’ll have the power you need to spin a taller gear ratio, and that will mean more speed). For maximum engine life, we suggest that you run 20-percent nitro for regular running, but when it’s time to crush the other guys in the neighborhood, reach for a jug of 30 percent. But be warned, the engine will run hotter.

INSTALL A HOTTER MOTOR

Drop in a hotter motor, like a 10.5 from Tekin’s Gen2 series, and you can easily add 10mph or more, depending on the motor you’re replacing.

SPEED INCREASE ªUP TO 15MPH

Swapping a Neon’s 4-banger for a big-cube V-8 would be a herculean task in the full-size hot-rodding world, but similar performance gains are as simple as removing two screws on an electric RC car. Most RTRs include an anemic 540 motor that’s good for about 18mph; install a modified motor, and you can easily double that speed; the lower the number of winds, the faster the motor. One caveat: the faster the motor, the greater the strain it will put on your car’s speed control, hence the “motor limit” rating for most speed controls. Check your speed control’s manual, and stick with a motor that has the same number or more winds than the limit.

INSTALL BALL BEARINGS

For the ultimate in friction-fighting, ceramic bearings like these from Acer are the way to go.

SPEED INCREASE ªUP TO 2MPH

Fresh bushings can actually outperform grease-packed ball bearings, but bushings quickly degrade and that costs speed. For maximum velocity, metal-shielded (not rubber-sealed) bearings are best. Most cars already have ball-bearing transmissions, so all you have to do is pop bearings into the hubs. The speed increase won’t be dramatic and will depend on the state of your car’s drivetrain before the install, but you’ll get more than speed: bearings greatly outlast bushings and take the slop out of rotating parts.

SWAP MONSTER TREADS FOR STREET TIRES

Pro-Line’s Road Rage tires (left) will let your truck reach its maximum speed potential on pavement; bar-treads such as those on the Mashers (right) require more power to spin.

SPEED INCREASE ª2 TO 5MPH

Gnarly monster treads are fine for the dirt and grass, but their excessive weight and rolling resistance robs you of speed on pavement. If you trade those treads in for street rubber, your truck will need less power to overcome that weight and rolling resistance, leaving more power for pure speed once you’re geared to take advantage of that power and to compensate for what will likely be smaller-diameter tires.

TUNE THE ENGINE

Don’t be afraid to lean it out! You can always richen it back up if you go too far.

SPEED INCREASE ªUP TO 10MPH

The only thing more amazing than the amount of power a little nitro RC engine can make is how much less power it makes if the needle settings are just a little off. We’ve seen guys give up half their engine performance to bad tuning, typically by running the engine too rich. Lean the high end out by turning it clockwise 1/12 turn (think of it as 5 minutes on the face of a clock), and make a few passes to see if your engine reaches higher rpm (and thus, higher speed). When the engine stutters at full throttle or starts running closer to 300 degrees, it’s too lean; aback it off until the engine sings a clear high note at full throttle with a faint smoke trail from the pipe.

CUT THE FAT

Kevin Hetmanski’s race-prepped Revo is full of weight-saving tricks: graphite chassis, deleted receiver and battery boxes, single high-torque steering servo to replace dual servos.

SPEED INCREASE ª1 TO 3MPH

If you can trim weight from your ride, it won’t need as much power to get up to speed, and that means it can go even faster. Exactly how much weight you can lop off depends on the type of vehicle you have. A burly monster truck with 8 shocks, heavy tires, a reverse-gear servo and other not-essential-for-speed parts can be lightened significantly by removing the superfluous parts, but a racing-style buggy, stadium truck, or touring car might only have a few grams to offer (don’t bother).

FAST FACT

When looking for weight savings, go to the wheels and tires first. The old racers’ adage “a pound of rotating weight is like 2 pounds of non-rotating weight” is very true, especially if you have a monster truck with heavy chevron tires!

GEARING THE REAL SECRET OF SPEED

A set of pinion gears such as these from Robinson Racing will let you match your car’s gearing to its power potential.

All of the tips outlined in this article can increase speed, but to really take advantage of them, proper gearing is essential. Otherwise, you’ll probably see quicker acceleration but little or no increase in top speed, which isn’t necessarily a bad thing, as acceleration wins more races than sheer speed. But when absolute speed is the goal, it’s all about gearing. To understand why, think of your car as a bicycle, and its engine as your legs.

THINK PEDAL POWER

Put your bike in first (the easiest) gear, and you can easily pedal to your maximum rpm. You probably aren’t going very fast, but you can really spin the pedals. A lighter bike, more aerodynamic position, or reduced rolling resistance won’t help you go any faster, since your legs are already going as fast as they can. So you up shift the bike to a taller gear ratio, and you go faster, and you keep up shifting and going faster until the gear ratio is too tall for the strength of your legs to overcome. The same thing is going on in your RC car. Unless your modification increases the motor’s or engine’s rpm, your car won’t go faster. But if you make it more powerful (or free up more power by diverting less to fighting inertia and rolling resistance), your powerplant will be able to turn a taller gear ratio for more speed just like an Olympic cyclist is able to go faster because he has stronger legs to turn a bigger gear on his bicycle.

PUTTING IT TO WORK IN RC

There are two ways to gear up an RC car for more speed: install a pinion or clutch bell with more teeth or a spur gear with fewer teeth. This will make your car roll farther with each turn of the engine’s crank or the motor’s output shaft and thus increase speed. Try going up two teeth maximum on the clutch bell, or up to four teeth on the pinion gear. Don’t overdo it; if you gear the car too high, you’ll strain the powerplant, and you may actually go slower. Check your manual for suggested gear ratio ranges.                 Credits:    http:// http:// Remote Control Toys on Sale

RC Cars Suspension Tuning

– Basic Suspension Tuning –

With Mark Pavidis suspension1http:// Mark Pavidis is old school. He’s been making A-mains at big races since some of today’s younger pro racers were in diapers. He has raced for some of the biggest companies in our industry, and has helped developed some of the most influential chassis, tire, and component designs in the RC world. Mark has been competitive at the top levels of RC racing longer than anyone from any part of the world, and many racers from any generation regard him as one of the toughest competitors they’ve ever faced.

He has won U.S. National championships in several classes, including 1/8-Scale Buggy. Along with Japanese legend Masami Hirosaka, Mark is the only other driver to win IFMAR World titles in both on-road and off-road competition. Unlike Masami, or any other driver, Mark is the only driver ever to win IFMAR World championships in both electric and nitro competitions. His 2006 IFMAR 1/8-Scale Off-Road title reaffirmed his place in RC history as one of the best racers of all time.

I sat down with Mark at AKA’s new offices in Murrieta, California, to discuss the most common adjustments available on today’s nitro buggies. When Mark Pavidis talks buggy setup, we listen.  suspension2  CAMBER
Camber is the relationship of the tire to the ground, such that a tire that is perpendicular to the racing surface has zero camber. If the top of the tire leans in toward the car, it has negative camber; likewise, a tire that leans outward at the top has positive camber.

Front Camber. Adding more negative camber to the front of your buggy will make your car less aggressive, especially when turning into the corner. More negative camber will also lessen the chances that the front tires will catch on ruts or bumps. Mark says, “On rough or high speed tracks, adding more negative camber is an important adjustment to make.” It’s usually best to start with a little bit of negative camber in the front.

Taking away negative camber (or even adding positive camber) to the front of your buggy takes away a little bit of overall steering, but will make your buggy steer into the corner more aggressively since the corner of the tire will dig into the track’s surface. This can help on slower tracks with plenty of high-speed corners.

Rear Camber. More negative camber in the rear tires will free up the rear of the car, making it whip around by taking away lateral traction. As with the front of the car, more negative camber will help your buggy navigate through rough sections of the track.

Running less negative camber in the rear will take away a little bit of overall steering, but your buggy will handle more responsively. If the track is not bumpy and has good traction, try running less negative camber to help carry more speed through corners.     suspension3 CAMBER LINK POSITIONS
The optional camber link mounting holes alter the rate at which the camber angle changes throughout the suspension’s movement. For the purposes of making only the following changes, you should reset your camber angles after moving the camber link locations.

Front
Outside (on the front hub).
A longer link means the camber will change less as the suspension compresses, which will make the car turn in harder but push exiting the corner.
Moving to the inside hole will give more camber rise, which smooths out initial turn-in but adds steering through the middle and exit of the corner.

Inside (on the shock tower).
Raising the inner mount will keep the front end more flat. On high bite and smooth track, this will smooth out your car’s steering response and make it easier to drive.
Lowering the inner mount will add body roll and make the car more aggressive. Mark almost always runs the lowest hole available.

Rear
Outside (on the rear hub).
A longer link gives less camber rise, which means less traction. On a high speed track with high grip, this will add more support by eliminating body roll.
A shorter link equals more camber rise and more traction. Because a shorter link will make the rear of the car feel softer, it will better handle rough sections of the track.

Inside (on the shock tower).
Moving the inner camber link mount to the inside or outside hole will have the same effect as changing the length of the link on the hub.
Raising the link on the rear shock tower will keep the buggy flat through corners and have less camber rise; this is a good adjustment to make on a smooth track with high traction.
Lowering the link will add camber rise and make the car more forgiving when the track is rough.
Moving the link out on both the shock tower and the hub, which will keep the camber link the same length, will add support and make the rear of the car feel stiffer. suspension4

TOE-IN / TOE-OUT
This is the angle of the tires when compared to the centerline of the car. A tire that has zero toe is pointing straight ahead. Toe-in means that the tires point in toward each other, while toe-out is the opposite.

Front Toe
1/8-Scale Buggies almost always run toe-out in the front. Adding more toe-out will make the car smoother and easier to drive on big tracks, as well as increase low-speed steering by decreasing the car’s turning radius.
Likewise, decreasing toe-out (even to the point of running zero toe) will give the car more initial steering response. This is usually only done on tight, low-speed tracks.
Mark says, “If you run toe-in (at the front), your car won’t come out of the corner very well, and initial turn-in will be too darty. If you run toe-out, it will turn in and come out of the corner much smoother.”

Rear Toe
The rear of the car is much different, as toe-out is never used. Adding more rear toe-in will add overall rear traction, both in a straight line and during cornering.
On the flip side, less toe-in will increase steering since the rear tires will have less traction. Also, the rear suspension and driveshafts will be at less of an angle, which will help on rough sections of the track.
Mark says, “Nine times out of ten, I run maximum rear toe-in (on the Kyosho MP9, this is three degrees of toe-in per side). The only time I run less is in truggy, because there’s already so much grip.” Also, he suggests only changing the inner pivot blocks to adjust toe-in rather than using rear hubs with different angles of toe-in. Changing the rear hubs will increase the angle of the driveshaft joint and change how the car works. suspension5KICK-UP
Kick-up is the angle between the ground and the lower inner hinge pins on which the suspension arms swing. Altering kick-up will affect the car much like caster does. In addition, adding kick-up will make your bump higher and further. You should only consider decreasing kick-up when the track has few or no jumps. suspension6

SHOCK POSITION
Tower. Moving the shock in on the tower will make the shock feel more progressive i.e.; initially it will feel softer, but increasing in stiffness as the shock compresses. If the track is slippery, move the shock in on the tower to add body roll and overall traction.
Moving the shock outward will make the shock feel more linear. This will free up the car and make it jump much better. On a track with lots of grip, move your shocks out on the tower to reduce body roll.

Arm. Moving to a more inward shock location on the arm will make the buggy feel softer and less stable. For blown out tracks, this adjustment will help navigate bumps and ruts without hurting the car’s jumping performance as much as moving the shock inward on the tower.
An outer shock position on the arm will make the car rotate more during cornering, and make the buggy feel more stable. This comes at the expense of rough track performance.

SHOCKS
Shock Oil. Thicker shock oil will help the car to navigate larger jumps and bumps since the oil will slow the reaction of the shock. In hot weather, increase the weight of your shock oil to maintain the same damping characteristics.
Thinner shock oil will allow the shock to react more quickly, and help your buggy soak up smaller bumps and track imperfections. If your buggy works well in warm weather, switch to thinner shock oil in very cold conditions.
Mark explains, “Temperature is a huge part of choosing shock oil.”

Shock Pistons. Choosing the correct shock pistons is quite simple. On smooth tracks with big jumps, Mark suggests using smaller pistons to slow down the shock action. On rough tracks with fewer jumps, reach for pistons with larger holes to allow the shock to soak up the ruts.

Shock Springs. Mark doesn’t often change his shock springs to adjust his car. In fact, he suggests changing both the front and rear springs at the same time to maintain the same balance front to rear. If the track surface is slippery, go to lighter springs to create more body roll and slow the car’s reactions. On asphalt, grass or Astroturf tracks with tons of grip, use heavier springs at both ends of the car to resist traction rolling.

CONCLUSION
As you’ll notice, each adjustment sacrifices a particular handling trait to gain another. There’s no magic adjustment to make your car “super dialed”, so decide what your buggy needs to do differently, make changes to your car, and see if your lap times improve. This guide should serve as a perfect compliment to the most useful tool you’ll ever find in your RC career: practice.

                                                                                                                                                               

Source:

http:// Remote Control Toys on Sale

How to Get Started in Hobby RC: Body Painting Your Vehicles

One of the best ways to personalize an RC kit is to give it a fresh coat of paint. This guide will focus on the basics of painting bodies for RC cars–a genuinely fun and rewarding art form.   

We’ve run through the basics of several types of remote controlled vehicles, from cars to boats to planes–and some tweaks to modify them. But one of the best ways to personalize an RC kit is to give it a fresh coat of paint. This guide will focus on the basics of painting bodies for RC cars–a genuinely fun and rewarding art form.

Most RC car bodies are made from polycarbonate plastic (aka Lexan). It is incredibly tough stuff, which makes it ideal for absorbing the abuse that RC cars are routinely subjected to. The bodies are formed by vacuforming a sheet of clear Lexan over a mold. The body is then painted on the inside surface, which effectively makes the plastic a thick, shiny clear coat. If painted correctly, a body can last and look good for a long time. http://amzn.to/22rOrBO

The Caveats

If you are an accomplished airbrush or spray paint graffiti artist, you already possess many of the skills necessary to paint a RC car body. There are, however, a few elements that are specific to painting car bodies that you must consider. The number one thing to know is that most paints will not stick to Lexan. You must use specially formulated products that are typically sold in hobby shops as RC car body paint. This isn’t a marketing gimmick. These are truly the only paints I have seen that bond reliably to Lexan. If you use some random hardware store paint, it will only look good until that first crash. Then, the paint will begin to chip and flake off, randomly eroding your artistic efforts. Trust me; don’t get cheap with the paint. Buy the right stuff and have no regrets.

Since we will be painting the inside of the body, some things may be reversed from painting tasks you are used to. Obviously, any masking must be done as a mirror image. Less obvious is the need to apply the darkest colors first. Since it is difficult to achieve a fully opaque finish, having a dark color behind a light color may affect the tint of the light color. Applying the dark color first negates this effect. Keep this in mind as you plan out your paint scheme and order of operations.

WORKING WITH LEXAN REQUIRES SPECIAL PAINT AS WELL AS SPECIFIC TOOLS TO ACHIEVE CLEAN, LONG-LASTING RESULTS. A VARIETY OF COMMON MASKING OPTIONS CAN BE USED.

You may need to do trimming or drilling of the car body. I highly recommend using tools designed for the job. The curved blades on Lexan scissors make it easy to trim wheel wells and other rounded areas without creating jagged edges on the body. A tapered reamer is the only sensible way to drill holes in Lexan. Regular drill bits will grab and tear as they go through, often leaving a mess. . If you are using a body that will require cutting and drilling, it is usually better to do this before painting. It helps to have the body clear when you are trying to get everything aligned and fitted.

Your Options

There is a seemingly endless selection of Lexan bodies. Manufacturers will often offer replacement bodies for the vehicles in their lineup. Aftermarket companies also sell a range of bodies in many different styles. Some are designed for a specific vehicle, others are more generic and can be adapted to whatever RC car you please.

In addition to styles, RC car bodies also differ in their level of finish. Some are fully trimmed and have holes drilled for the body posts. Many others must be cut free from the vacuformed sheet and have holes drilled; hence the scissor and reamer suggestion above. The package may also include precut paint masks for the windows or perhaps decals to emulate headlights. Pay attention to these details as you search for a body, as they could have significant impact on the level of effort it takes to get the body painted and fitted to your car.  http://amzn.to/22rOrBO

LEXAN CAR BODIES ARE STOUT STUFF. THIS GARAGE-SALE TREASURE HAS SEEN MUCH ABUSE BUT ITS ONLY PROBLEMS ARE COSMETIC. I REPLACED THE BODY ANYWAY.

Project Example

My brother-in-law recently gave me a Traxxas E-Maxx monster truck that he found at a garage sale for just $15. He’s always had a knack for finding super deals like that. Other than the missing transmitter, the E-Maxx appeared to be complete and in relatively good condition. Thanks Dan!

Since I planned to replace the haggard shell on the E-Maxx anyway, I thought that it presented a good opportunity to illustrate the basic techniques of painting a Lexan body. I actually bought two bodies. On one, I will show a very basic, single-color spray can paint job. With the other body, I will illustrate a more complex multi-color motif that necessitates an airbrush.

THIS REPLACEMENT BODY FOR THE TRAXXAS E-MAXX COMES TRIMMED AND DRILLED TO FIT THE TRUCK. IT ALSO INCLUDES A TRANSPARENT OUTER MASK. ALL OF THESE FEATURES EXPEDITE THE PAINTING AND FITTING PROCESSES.

The bodies that I purchased are Traxxas’ replacement units for the E-Maxx. They are trimmed and drilled for the truck, so that was a big time saver. What I like most about these bodies is that they have a transparent mask on the outside. This prevents paint overspray from getting on the outer part of the body. It is easy enough to mask the outside yourself, but having a transparent mask means you don’t have to remove it every time you want to see how the body looks from the outer surface.

The Spray Can Approach

I did a quick fit check to make sure the body fit the truck as intended (it did) and then got down to business. As with any paint job, the key to a good finish is proper surface preparation. In this case, the body must be washed to remove any dirt, oil, fingerprints, etc. I use a tiny drop of dish soap and warm water to wash the inside surface by rubbing it with a clean wet cloth. After rinsing, I used lint-free paper towels to get everything completely dry.

Next I masked the windows. There are many ways to mask an area for painting. I typically prefer to use regular low-tack masking tape whenever I can. The blue household stuff is good for masking large areas and that’s what I used for the windows. Liquid mask is good for compound curves and complex designs. For stripes or small areas, thin vinyl masking tape works very well. You can also use frisket film, which is a little like adhesive shelf paper. I used a variety of these masks on the airbrushed body, which I will explain later on.

A SHARP KNIFE AND A LIGHT TOUCH ARE ALL YOU NEED TO TRIM MASKING TAPE. ALWAYS MAKE SURE THE FINISHED EDGES ARE FIRMLY ADHERED TO THE LEXAN.

Allow me to digress a bit further on the tape topic. One of my biggest pet peeves is when people set tape rolls down on their side. When that occurs, whatever dirt, dust, hair or other schmutz happened to be on that surface is now stuck to the edge of the tape. When you apply the tape as a mask, the clingons come with it and compromise the edge seal. The result is often color bleeding on your painted edges. To mitigate this, I keep a few generic-use rolls of masking tape handy and visible to the rest of the household while keeping my private stash of clean tape squirreled away in a Ziploc bag. I had to use the community tape for the windows, but it worked out okay.

The windows are marked with small ridges in the plastic. I applied adequate tape to completely cover the area and then trimmed away the excess. I used an X-Acto knife with a new #11 blade for trimming. It takes a very light touch to cut through the tape and not dig into the plastic. The window ridge creates a natural guide for cutting. Once the cut was complete, I carefully peeled away the excess tape. I then used a fingernail to reseal the entire perimeter of the mask.

THE FIRST COAT OF ANY COLOR SHOULD BE A VERY LIGHT MIST TO HELP SEAL THE EDGES OF THE MASKING MATERIAL AND ENSURE A DRIP-FREE FINISH.

The paints I used are from the new Duratrax line of RC car paints. On this first body, I used the Metallic Red spray paint. I always start with a super-light mist coat of paint. This helps to seal the edges of the masks and prevent bleeding. Not all spray cans work the same. It helps to practice a little on a scrap piece of plastic or cardboard first, so you can get a feel for the spray characteristics of the nozzle.

The mist coat dried within a few minutes, so I began applying subsequent coats, each only a little heavier than the mist coat. There’s no point in getting in a hurry and glopping on a heavy coat. It is likely to run and will take longer to dry. After about half an hour and four coats of paint, the body had a nice, even, red tint to it, so I moved on to the next step.

Most metallic, pearl, and candy, and fluorescent colors are not intended to be used alone. They must be backed with a coat of silver or white to make them opaque. In this case, I applied two coats of white Base Cover Coat. This really made the color come alive. I then carefully peeled off the window and outer body masks. However I wasn’t quite done yet.

I LIKE TO RUN A SHARPIE MARKER AROUND WINDOW BORDERS TO HELP HIDE ANY IRREGULARITIES IN THE MASKED EDGE.

I like to trace the perimeter of the window using a black Sharpie marker on the outside of the body. This helps to cover any irregularities in the edge of your mask, of which I had plenty. You can remove any goof-ups with the Sharpie by using a rag and alcohol (denatured alcohol works best). It was at this point that I noticed the bodies did not include headlight decals–that’s a separate item. I guess I’ll have to add them later. The same decal sheet also includes black decals for the windows. If you decide to use something like that, you wouldn’t need to do any masking. Just paint the body and apply the decals to the outside.  http://amzn.to/22rOrBO

THE PAINTED BODY ONLY NEEDS HEADLIGHT DECALS TO BE COMPLETE. I EXPECT THIS PAINT JOB TO WITHSTAND A LOT OF ABUSE AND LOOK GOOD FOR A LONG TIME.

After allowing the paint to dry overnight, I completed the final step of the paint job. I applied squares of masking tape on the underside of the body around the body post holes. This prevents the top of the body posts from scratching the paint each time you install the body. While it isn’t fancy, this red paint job is clean and should last for a long time.

The Airbrush Approach

The advantage of using an airbrush is that it allows much more precise control than a spray can over the amount of paint that comes out and the size of the spray pattern. This precision opens up many possibilities for custom designs and effects. My meager airbrushing abilities only scratch the surface of what is possible. With the second E-Maxx body, I created a paint scheme that is simple by airbrush standards. Yet, it displays some of the subtleties that are possible. My goal here is not to teach you how to use an airbrush, but rather to help you to see why you should learn.

WHEN USING AN AIRBRUSH TO PAINT SMALL AREAS, IT IS IMPORTANT TO MASK ANY PARTS THAT YOU DO NOT WANT PAINTED.

I used frisket film to create the Tested “T” logo on the hood. I first cut out the entire logo design on my workbench (as a mirror image) and then applied the completed mask to the hood. To help me align the mask, I drew reference marks on the outside body mask with a Sharpie. Next I masked off the orange, black, and white stripes that dissect the body. These were created freehand using flexible masking tape, also from Duratrax. This stuff is really flexible (like electrical tape), but doesn’t leave adhesive residue. It takes a little practice, but you can get this tape to fit around compound curves and features in the body relatively easily.

Once the features were masked, I used newspaper to mask most of the body. I left only the soon-to-be black stripes and “T” open. Remember: darkest colors first. I used spray paint for that quick job. Next came Candy Blue for the front of the truck. First, I custom mixed a darker shade of blue by mixing in a little black paint. I then added thinner to get the paint to the right consistency for airbrushing. I applied this darker color to create a fade where the blue meets the forward orange stripe. I also added light touches of this color around the window frames and the T logo to give each a little depth.

Next, I thinned straight Candy Blue from the bottle and applied several coats. As with the red on the previous body, this color also needs an undercoat. This time, I used silver, which I think gives a more metallic finish.  http://amzn.to/22rOrBO

I made a grey color by mixing white and black. This was applied behind the rear orange stripe. It transitions to a lighter grey, and then to white. Somewhere while doing this fade work, I added a shot of grey to the bottom panel of the T logo.

The Fluorescent Orange was airbrushed next. It required a white undercoat. I was able to kill two birds with one stone by painting the white areas and undercoating the orange in one shot. Once the white dried, I traced the window outlines with a Sharpie and called it done. Again, it isn’t a very complex paint job, but it should give you an idea of the effects that are possible with the control afforded by an airbrush.

THE COLOR FADES AND HIGHLIGHTS ON THIS BODY ILLUSTRATE SOME OF THE SIMPLE EFFECTS THAT ARE POSSIBLE WITH AN AIRBRUSH. MANY MORE EXOTIC POSSIBILITIES ABOUND.

Conclusion

I hope these tips will encourage you to try painting your next RC car body. I think it is a lot of fun to do and the creative possibilities are endless. Life is too short for production line paint jobs!

Let’s summarize the key points to remember:

  • Paint goes on the inside surface
  • Wash the body with dish soap
  • Use the proper paint and tools
  • Apply dark colors first
  • Always start with a mist coat on every new color
  • Never use a heavy coat of paint
  • Some colors require a white or silver undercoat
  • Be creative!

Credits:  TERRY DUNN   http://www.tested.com/tech/  http://