Thursday, June 27, 2013

Gas RC Car Chassis

The stunning realistic features achieved by model Gas RC Cars brings forth many models of cars that look exactly like real Subaru Imprezas, Ferraris, Peugeots, Porsches, BMWs, Formula 1 racecars, or even Arnold Schwarzenegger's Hummers! They actually use scale replicas licensed from the original makers.

Like real cars, you will be amazed by the sheer variety of beautiful, fancy and stunning looking Gas RC cars on display in shops and on e-commerce sites. But inside the body, the engine and its systems are uniquely designed for Gas RC Cars. A Gas RC car's chassis is key to the type of car you get.

The chassis has to be tough and strong to handle the top speeds and maintain system integrity. While an off-road Gas RC Car's chassis needs to be extra sturdy to cope with rough handling, a Gas Sprint RC Car's chassis needs to be extra light. Using different body shells of various models on a basic chassis, many different types of Gas RC Cars can be made.

A Gas RC Car chassis houses its engine, radio control receiver, subsystems, suspension, and wheels, and it comes readily made even in kits. To make your dream car, all you need to do is to fix the parts on it and cap it with the body shell.  Many firms take special care to make a basic chassis suitable for assembling an electric or Nitro/ Gas RC car on it. It may be made either of high-strength carbon composites  (as in Gas sprint RC cars and mini Gas RC Cars) for lightweight or with high-strength and very tough titanium alloy (as in off-road versions) for rough handling and blazing speeds.

While a chassis in general only provides the basic frame, when the Ready to Run kits are sold, companies may refer to the chassis frame equipped with all the parts, wheels and engine suitable for the particular type as the chassis. So, a Gas RC Car chassis may mean the basic metal / carbon fiber chassis frame or the car without the body shell, depending on the context.

If you assemble a car yourself, you will choose the suitable basic Gas RC car chassis frame or use the one supplied to you. But if you buy the RTR chassis (complete car without the body shell) you will need to make sure all of the components suit your requirements. Your dream RC car has to be housed on a good Gas RC car chassis.

Gas RC Buggy

Not everyone loves to do things simply and easily. Some people need rough and tough action. So, the RC toys too chipped in with the off-road RC Cars. A Gas RC Buggy is a Nitro gas-powered off-road buggy.

It is typically powered by a .21 to .26 size Nitro gas RC engine that delivers about 2 to 3 hp and races the buggy at around an unbelievable 40 mph. It comes equipped with a bunch features specific to its rough, tough, and dirty racing conditions.

As it needs to handle slippery and sandy tracks, the Gas RC Buggy comes equipped with four-wheel drive and spiked rubber tires for easy grip on loose soils. As it is expected to jump off small cliffs and sand dunes, it is built with sturdy, bulky, oil-filled shock absorbers. 

Usually, the Gas RC Buggy is available in scales of 1/8 or 1/10.  It can face tough action as it nears 40 mph on rough terrains. So, even its chassis is made of aircraft grade 4 mm aluminum alloy or tough titanium alloy, and many of its parts are also specially made with titanium alloy.

The Gas RC Buggy may sometimes have a roll protection cage made of steel or aluminum like a sprint car and a rear wing like the formula 1 racecar. Kyosho, Traxxas, Mugen, HP I and OFNA are a few popular brands for Gas RC Buggies.

With the constant innovation and competition among manufacturers of RC toys, these Gas RC Buggies are getting some sophisticated subsystems and radical designs. Silicone-filled differentials, large shocks, dirt covers for the engines, anti-spill tanks, rubber-sealed ball bearings for many parts, performance enhancing tuned exhaust pipes, a low center of design for more stability, CNC machined and laminated parts, and a multi-channel radio control are a few of the features to be mentioned.

Also available are rather large 1/5 scale Gas RC Buggies that have a huge 23 cc two-stroke engine that can run on regular gasoline! These Gas RC Buggies are easily available in hobby stores or online with reliable after-market support.

Gas Powered RC Jump Cars

Any gas powered RC car that jumps can be called a Gas Powered RC Jump Car. Similarly, one can make mini RC Gas Cars jump over obstacles. But, the smaller they are, the smaller the jumps are. So, the on-road street cars can also be made to jump over obstacles by using a jump ramp or just by driving it off of small cliffs. Everyone must have seen what a jump apron looks like from circuses, movies, and television. The catch here is that the on-road versions of Gas RC cars are not designed for rough handling such as jumps. It is possible that this may cause the on-road Gas RC cars to just break.

Off-road Buggies, off-road Trucks, off-road Monster Trucks, and stadium trucks are designed to jump with force over obstacles and off cliffs. Their rugged design, from the extra strong and tough titanium alloy based chassis frames, oil-filled super active suspension systems, and carefully designed sub-systems can help them jump without damage. While assembling a Gas Powered RC Jump Car, take care to use company kits or authentic parts and fix them strictly according to the manual. Bad assembling, loose fixtures, incorrect parts may lead to failures of the Gas Powered RC Jump Car from the impact of the jumps.

Their large wheels with sticky, rubber tires with knobbed or grooved treads can really help the off-road trucks and buggies withstand jumps. They help easily handle steep inclines, overcome obstacles, and jump over them with speed. Four-wheel drive, which is typical for these Gas Powered RC Jump Cars, also helps a great deal. Besides extravagant jumps, it can traverse virtually any terrain from smooth roads and carpeted racetracks to dirt tracks, beaches, dirty fields, mud, grassy lands, fields with short vegetation, or rocky grounds.

Gas Powered RC Jump Cars make excellent radio controlled dune buggies. It's a delight to watch them throwing dust a few feet into air, shooting past at speeds of more than 30 mph and jumping over dunes, rocks, small cliffs, and every obstacle that comes in its determined path with little difficulty or wear and tear.

Designs For Gas Powered RC Cars

"We sell all the latest designs of all famous brands like Tamiya, Kyosho. Traxxas, Team Associated, HP I etc. of Gas Powered RC cars", says an RC Cars selling site. What they are referring to are the looks of body shells of the cars and the designs and graphics that are painted on. But by 'Designs For Gas-Powered RC Car', we mean the engineering design of the gas-powered RC Car and its components.

There are many types of RC cars so they all have many different design considerations. On-road cars of all types such as sedans, SUVs, and convertibles can share a common design basis with the body shell and the only changes are some of the specifications. Touring Cars can also share the same basic structural design but they need to withstand long distance runs over extended periods as well as pumping in more power at blazing speeds.

Formula 1 racecars need much higher speeds on the racetracks but not as much endurance as Touring type cars. Hummers and other army trucks can do away with a little bit of the power and speeds over common on-road versions.

The off-road Buggies, Trucks and Monster trucks have drastically different designs of all the car's systems to withstand the impacts, vibrations, obstacles, and falls without causing wear and tear. Many components including the chassis and drive train are made with titanium alloy that is sturdy, durable, and strong. A variety of special designs are considered for these cars' subsystems.

Sprint Cars are stranger than other types because of their emphasis on very light designs, powerful engines, and subsystems to cope with short fast sprints on dirt tracks. They need an adjustable main top wing and side wings for sticking to the ground and turning maneuvers, and a strong cage for roll protection. This all needs to be strong and lightweight.

Drag cars, on the other hand, have the most radical design with the single most important attribute being their brute speeds in short distances without any consideration for speed controls or steering systems because they don't race in laps and don't need to take turns!

Besides these structural differences in designs and specifications of car components, there are some common design philosophies for all the basic components of the car like the drive train, engine, radio receiver, fuel system, and steering system. The amateur racers and even the hard-core racers don't need to bother with those engineering design details. They should instead be concerned about what to expect from a particular type of design of a particular make and come to a decision accordingly!

Electric RC Car Subsystems

In any complex system like an Electric RC Car, as it is, there bound to be many subsystems. The life and performance of an Electric RC Car as a whole depends on, among others, the life, performance and efficiency of the subsystems, besides the usage conditions and the driver's skills. More over, if you are a mechanical enthusiast who assembles an Electric RC Car oneself, you are bound to know the subsystems well.

Similarly, if you want to upgrade your existing Electric RC Car all by yourself, you also need the know-how of subsystems for correct upgrade decisions. Because, not often it is the motor power that when increased can give improved performance, to the extent you expect. May be, a faulty steering system reducing the traction, an improper connection to the battery failing to drain it well or even just the tyres need to be changed or you need to learn that swaying the car on to dirtier parts of track may attract dust, reducing the friction and affecting the performance.

In an Electric RC Car there are mainly the following subsystems:

Drive Motor System of an Electric RC Car consists of a motor, cooling arrangements in the form of a heat sink with a little fan, ESC and Battery tray.

Battery system consisting of a battery tray to receive a battery pack of four or six cells of Ni-Cd type or Ni-mH type or one or two Lithium cells etc., of suitable range of voltage and current.

Electronic Speed Control System offers more advantages than Servo based mechanical speed control system.

Micro Controller System consisting of a circuit board that interfaces the microprocessor/ microcontroller with the optical sensors, the speed control systems and the drive motor and other systems. It also performs any other smart functions an Electric RC Car is designed to do.

Radio Controller System using Frequency Modulation (FM) with at least two to three channels.

In addition to the above, there are Steering subsystem, Transmission subsystem, suspension systems, wheels and axles, internal electrical systems etc. as well. So, have an Electric RC Car, know its subsystems well, care for it and enjoy it for long!

Electric RC Car Maintenance

Every moving gadget needs maintenance. Great appliances often do not give their worth due to faulty handling or scant maintenance. A well-maintained Electric RC Car does give you years of pleasure, unless you are a racer. The maintenance of Electric RC Cars requires attention to the moving parts, their bearings and electronics.

Motor: It needs regular cleaning with motor cleaning solution and oiling. If it is brushed motor, the brushes (at the commutator) need periodic checking, cleaning and occasional replacement.

Large modifiable motors and brushless motors often come with heat radiating fins (like those on a PC chip heat sink - resembling motor bike engine fins) and even a little fan to cool them off. Whenever you service such a motor or remove your car parts around it, check that the heat sink sits properly on the motor, as it originally came or is advised by the manufacturer.

An overheated motor's permanent may be destroyed by heat due to demagnetisation.

Bearings: Replacement of all metal / plastic bushes or cylindrical bearings is necessary, as they wear out easily in heavy-duty use. In case ball bearings, their life and performance depends on proper alignment in bearing cap and frequent greasing.

Electronics: The only thing you need to take care of is to see that connections are not loosened after races and that no dust and dirt accumulates on it. If you see any, gently brush it off. Keep the car away from climatic extremes.

Battery: Always use correct battery or pack with the correct number of batteries, with the right recommended voltage. Higher voltages may burn the car parts. It is always necessary to keep a spare set of batteries, as they take some 20 minutes to charge on even the fastest charger. Always recharge the battery after fully discharging it, for long life of battery.

Tires: The race tires, which have higher friction but lower life, are recommended for races, versus the conventional tyres, which have less friction and long life. Never allow the car to sway into dust as it affects tire friction, crucial for races. Always keep clean tires.

If your advanced Electric RC Car has microchip-based controller for speed, keep it safe from heavy magnetic fields, to prevent malfunction.

Gas RC Cars