[czeke]

In Breakaway, our team used snowmobile belts for our tank tread system. An old, used snowmobile tread was used. We removed the cleats and bandsawed the outer sides away, leaving the inside groove in the middle. Our belts was 2 1/4" wide. We shortened the belt to fit the cogged wheels ( 2 driver wheels in the front and 2 idler wheels in the back. We also used, on each side, in the middle between the cogged wheels, on the inside, 2 bogey wheels, which had to be shimmed out about 3/4", similar to your WCD. The bogeys were 10" center to center, and we achieved very good maneuverability. By gearing it down, we picked up extra torque. Instead of being pushed around, we did the pushing. We also easily traversed the humped playing field dividers.