[cbale2000]

You might want to consider offsetting one of the motors on each gearbox up a bit to allow the gearboxes to be removed more easily if needed (might also help with wire access to the motors). We've had issues in the past where we didn't allow enough clearance to do maintenance on our gearboxes and it proved problematic.

Otherwise it's a very nice looking drive, I initially mistook it for an FRC bot. =)