When most people flick the switch on their remote powered vehicle, they take it for granted that the toy starts moving without a hitch. The key piece of equipment in this process, of course, is the motor. An may not provide the raw power that a nitro one does, but it is more quiet and cleaner. There are two basic types of RC motors for ground vehicles.
~A stock motor cannot be changed in any way. It comes from the factory and must be used as is. When you buy a ready-to-run electric RC car or truck, then the motor that comes with it will be the average stock motor. To save money you can even purchase a used electric motor.
~A modified electric RC car motor is typically more powerful and must be used with a separate electronic speed controller. It has adjustable timing and ball-bearing races.