One of those "just out of curiosity" things: do motors draw more current when they're stalled than when they're moving? If that's true, how is it possible? A motor has a set resistance, and if V = IR, and I'm not changing the voltage, current should also be constant whether it's under load or not.
Unless the resistance changes somehow? I'm assuming the motor is DC, just because AC electronics math would almost make sense as to why the current draw can change (unless of course a DC motor still draws like an AC motor while moving?) OOh, science :-P