Drill Motor/Speed Controller/Who Knows What Issues

[GMitchell]

Well, my team's cruising right along - at least, we're going faster than we did last year. Unfortunately, we've run unto a bit of stumbling block in the shape our drive train. Currently, we have the two brand spankin' new drill motors driving a pair of wheels. The wheels have sprockets on the outside to link to the other wheels. This is not the problem. The problem is that after only a brief moment of movement, the motors will stop dead. Not only that, but the lights on the speed controllers will turn a dull, milky color, rather like that of a dead man's skin.

This is a problem, to say the least. We are currently using last year's RC because of a minor screwup a week or so ago (how long does it take for FIRST to replace a fuse holder on the robot controllers anyway?), but that worked fine last year, so I somehow doubt that is the problem. Both the drill motors are in low gear, the program is as simple as can be, and everybody on the team is completely stumped.

Anybody have anything resembling an idea?