For your viewing pleasure (or, if we're lucky, fear), I've posted a few photos in the robot gallery of our team's triple-motor gearbox. In response to a post in the TechnoTank thread about whether three motors help, our drive system this year is certainly a vast improvement over last year (where we had a drill motor and a custom gearbox on each side). I don't think we have ever managed to stall the motors this year, we have never once flipped a circuit breaker, and we can run the motors a lot longer without them getting hot. Anyways, the pictures:
Team 188 gearbox
Team 188 gearbox under construction
Team 188 drive train
-Ian Mackenzie
Team 188, Woburn Robotics (Blizzard)