The dewalt clutch might have worked, but the motor mounts I'm using (team delta) eliminate the clutch from the design and I would have to do a major rework to get that functional again.

I'm using a Dalton OSD225 torque limiter with a 22 tooth #35 sprocket- http://daltongear.thomasnet.com/item/-o ... ce/pn-2032?

It's also on McMaster-Carr as #'s 6524K11 and 6525K11