I just motorized my barley crusher tonight and it couldn't have been easier with the "Beefy Bodine" motor. I know I'm not covering any new ground here; I followed these two great step-by-step links:
What I really wanted to share was the link to the "Beefy Bodine" motor that I found at Herbach & Rademan: http://www.herbach.com/Merchant2/mer...de=TM01MTR4527
The motor is typically hard to find but these guys have them in stock for $75 right now, not as cheap as they used to be, but it makes motorizing a mill a snap. If you are in the Philly area, you can pick it up yourself in Moorestown, NJ and save on shipping.