Stock RC Car Motor Breaking In (Part 1)

Breaking in stock motors is something that is a personal thing to almost every racer. There are almost as many different ways to break in a new stock motor as there are racers that run them.

Applying 400 grit lapping compound to each of the bushings and running the motor on Turbo 30 at 2 volts. This allows the lapping compound to work. It is the way between the motor shaft and the bushing. As the motor spins with the lapping compound on the bushings, they become polished. Lapping compound is similar to Trinity’s Bushing Buster. It is a paste that contains abrasive particles that work to polish the bushings as the motor spins.

The one needs to apply a small amount of compound on each bushing and run the motor until the paste turns black, then it needs to be sprayed off with motor spray. The process needs to be repeated four to five times. This repetition of process makes sure that the bushings are sufficiently polished. But if the same is done for longer span of time then the bushings will begin to show signs of end play as the abrasive in the paste begins to wear on them excessively.

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