How do you make a RC car from scrap pieces?

Answer 1

Well you will need experience to do this. You need to get all the parts, wheels, motor, body, gears, ESC, steering servo, receiver and transmitter, and a few other things. They must all be able to fit together correctly, so same style parts (not always same brand).

You need to know how they all fit together, build the gear box and attach it to the base of your car. Put in the front steering mechanics, and wheels on all 4 Axel positions. Attach the motor to the gearbox. Put in the electrical systems and put on the body/cover.

Of course this is very basic because there are many small differences there could be in how you build it, there is even the possibility that you do some (not all) of them steps in a slightly different order.

Note: this was based on the construction of an electric RC car.

Answer 2

RC cars require a fair bit of specific technology, so unless you think ripping another toy RC apart to make one makes sense, then you cant.