[Ryan F.]

Heres the simple method we used that worked just fine. We used the drill motors with the FIRST supplied grearboxes, and just stuck those on the front. For the CIM's we designed a simple gearbox with a relatively simular output speed, and just chained the two drive shafts together. All the gearbox consisted of was a 12 tooth gear right on the CIM moror, that lead to a 60 tooth on an idler shaft which also contained a 16 tooth gear. That 16 tooth gear was then meshed with a 70 tooth gear on the output shaft. It turned out running well for us, but the CIM's might have been running a little too fast, so if I used a concept like this again, I would change the gears around a little to acquire a slower output speed.

Here's a crude diogram of out Gearbox

CIM MOTOR ---12 tooth gear
.......................60 tooth gear----------16 tooth gear
.................................................. ......70 tooth gear--wheel!

Simple is good.