Things You'll Need
Instructions
Gather together the parts. Your kit should contain a chassis, a car body, wheels and an engine.
If necessary, plug in a soldering iron. Some cars require soldering; others clip together and have integral electrical attachments.
If the kit comes with directions, read them first.
Mount the engine into the chassis. If the chassis screws together, an appropriately sized wrench should be included with the kit.
Bolt the wheels on.
Paint the body if desired. Add decals if you'd like.
Allow the body to dry overnight.
Attach the body to the chassis.
Check for any friction between the wheels and the chassis or body.
Test the car on the track.