530 motorcycle chain 50 industrial chain. You could put a smaller pinion on it to get some of that torque you lost.
It takes some rigging but a 1 inch keyed sprocket can be made to work. The one I use had 2 key slots and a set screw for each. Had to do a little grinding on the key and used locktight on the set screw but it worked great. IIRC I went with a 13 tooth.
|