wood lathe motor

Need tips on how to add disk sander wood lathe?
I have an old wood craftsman around. Still runs like a champ with your 1 / 2 horse power, did Dunlap engine in 1956. I plan to add a sanding disc pad 4 inch face plate. Diameter of 12 inches is probably pushing. What would be a good practical size. I hope I can go more than 6 inches.
I think something more than 6 inches would be pushing it. For anything larger in dia. can try a face of an aluminum plate bottomed saucepan old and used to connect the sanding disc. That way you could have a larger diameter. plate 4 inches from the present one. I read about someone who did it and was very successful.
Wood Turning Basics : Wood Turning: Lathe Parts
