[Matt Reiland]

Originally Posted by sanddrag

Ah, okay. So you really don't have 3 (close fitting) bearings on the shaft. Also, now I can see the need for couplings. Looks very small/compact!

I'm not sure if this would be a good idea but it seems like those couplings are taking up a lot of space in your otherwise compact design. If you got a gear just big enough to bore out and key to fit over the CIM shaft to keep the tooth count small (for 20P I believe this would be a 12T) then you could increase the 55 tooth gear just a little bit (maybe to 60) or maybe even keep it that size for a faster robot then you could move the CIMs in closer and mount them by the face to that first red plate.

Not sure if anyone else has seen this but it is THE coolest, easiest, and cheapest way to put the CIM motor into a custom gearbox. I already ordered a bunch for next year

http://www.andymark.biz/am-shifter-cim-gear.htm

I will definately be adjusting my design to use these, it just doesn't get and easier. The right bore, keyway, everything.