Okay my lathe spindle speed should be 500 rpm's and the new motor would be 1800 rpm's. Now I can get close, using components from Burdens Surplus. The components would be a motor drive double sheave 2.5" and a driven would be a double sheave 8.75". Now has anyone have the shaft diameter of the gear head drive for the correct bore for the pulley? AND has any tried to update to the 1800 rpm motors? I mean I don't know if there would be room to get the larger pulley on with interference from the adjacent spindle shaft nose? Any experience out there moving up to newer motors? The 1200 rpm single phase motors are prohibitively expensive "IF" you can even find one. Yes, the 2 hp is larger than probably necessary (not sure if it will be too long to fit in the Leg compartment), but I'm in love with larger 7/8" diameter shaft. These ol' lathes are just fine for most users and in my case I've got work with what I got. Any comments/advice is really appreciated thank you. bjr23