Rc motors that won't run?

If the motor is that old then they need a good check up. I'd disassemble it completely. Clean all the bearing / bushings. Look at the brushes. What is the condition of it? Are they old & worn out? Compare those with new brushes. You probably have to replace it. Look at the commutator. Are they worm out? They probably are. They do have a minimum operating diameter for the comm. If you have a commutator lathe, resurface it. If not then replace it. They might have some parts out there for a comm somewhere. If you want to go through that, I say have fun. I take it that your batteries & ESC are in good shape & are not ten years old as well. I'd look into getting a brushless system. More power & little to no maintenance. Enjoy.

Hey!! an easy one!

Check the batteries amperage! some times batteries are charged but don't have any but I mean it any kind of amperage! This batteries are honest to God dead to this word! you need new batteries! Other important thing is clean the motors! and lubricate the bushings, they may have been totally mess up collectors! open, sand, and replace what is corroded, other wise they will get U down! Other thing that wouldn't hurt you is to check the Speed Controllers! they also may be in not so good shape!

Good luck and Have fun!

confident. you will pick a servo and a micro swap. between the motor leads could desire to be under pressure out to the in many situations open contacts on the micro swap. while the servo is operated, the servo arm could desire to press the micro swap closed, subsequently winding up the battery voltage to the motor. to renounce the motor, opposite the servo have exciting.