i just use a regular 1/2 hp motor that came from an old furnace squirrel cage blower which was belt drive. i made an arbor to attach the wheel to the shaft. if the motor housing is 6", go with an 8" wheel. if the motor is larger, go with the 10" set. you will need to have open shafts and no guards in place. here is a link to a vid of me sharpening a busse ash that belongs to macgregor22. he was running the camera http://www.myculpeper.com/rj/2008richardj4.wmv