[pryoplasm]

ok, a few things, i dont know the exact stuff for what my team did this year because i specialized on the electrical stuff rather than the mechanical side, but i can give a rough idea of what we did

we designed and made our own gearboxes, with different reductions for the drill and the CIMs. not sure what the exact ratio is. also, a heads up, unless the drills/CIMs are mounted in the same direction (ie. both facing left) then one will have to run in reverse, which isnt the same as the high speed for the forward drill.

also, if you only want to use 2 motors for the entire drivetrain, its possible for tankdrive. we did that, oh, maybe 3 years ago, the game with the ramp that could tip back and forth.., used 2 drills in what i can only incorrectly describe as a figure 8 looking thing, with 2 drills in the middle of each side, 2 chains going to the front and back wheels. we also had a sweet transmission that could pop a pin and slide around in neutral, but that belongs in a different thread.

hope this helped