Q: What if I want to break in my motors without disconnecting them from the circuit board?

A: You can break the motors in while they are still connected to the circuit board, but you might be applying more than 3 volts to them through the ESC, which is not ideal. It is important to remove all load from the motors. Therefore, unbolt the motors from the gearboxes and strap them to a piece of wood. Then run the motors at low speed for an hour or two.