SO I'm building a tire surfacer and instead of pullies I would like to use a chain and sprockets. Has anyone else done this? My question is how do I know what sprockets i need? I have a 1 hp 3200 rpm electric motor with a 5/8 shaft. I have not mounted the axle to the machine yet so the spacing is flexible any help would really be appreciated. I thought of using an old driver from a clutch on the motor and a whatever tooth kart sprocket on the rear. I know it's important to get the speed right.