Things You'll Need
Instructions
Remove the motor from the remote control car.
Remove the brush and spring attachments from the armature (the longest section of the motor).
Unscrew the two screws either side of the armature that hold the endbell in place. Remove the endbell. Separate the armature from the main section of the motor.
Place two drops of brushing oil on the grooves of the lathe. Position the armature in the grooves on the lathe.
Turn on the lathe. The commutator at the end of the armature will begin to spin.
Place the tip of a permanent marker in the center of the commutator for five seconds as it is spinning. This mark will provide a visual indication of how much you are cutting off your commutator.
Move the blade of your lathe towards the commutator using the "in" and "out" adjustments on the lathe until you see a copper line appear on the commutator. Your blade is now in the correct position to make the cut.
Move the blade across the surface of the spinning commutator in one clean sweep from one end to the other using the "left" and right" adjustment on the lathe.
Turn the lathe off. Repeat Steps 7 and 8 if you can still see permanent marker on the commutator.
Brush away any shavings from the commutator with a small paintbrush.
Put the engine back together and place it in your remote control car.