[mpierich]

[QUOTE=Bilko;46326]Hi guys.
im after ideas to get this spindle rigged up correctly. can anyone here please suggest what type of motor and belt would be best suited? i'd like to use 3hp single phase if possible
QUOTE]

I'd use a dual pulley and two belts to get the most power from the 3 hp (a pretty big motor for polishing unless you're industrial). Not sure what you mean by type of motor - most can be mounted any way you want. Just position it so the buffing wheels turn downward on the work side (toward you). Some motors you can reverse direction.

To figure your pulley sizes, (spindle pulley diameter/motor pulley diam) x motor rpm = spindle rpm. I.E.: (3"/6") x 3750 rpm = 1875 rpm. That would be to step down the rpm. To step it up you'd put the larger pulley on the motor; to keep it the same rpm as the motor, obviously the pullies would be the same size. 3750 seems to be a good all-'round rpm for 8" wheels, you'd want it a little slower for 10" wheels.

Hope this helps, you don't really say what you needed.