Thank you for the interest. Yes, the DC motor I used was very difficult to find a power supply for (9.6VDC), so when I came across this motor, it was a match made in heaven. The AC motor, of course, simply plugs into the wall, and if you need to control the speed an inexpensive router rheostat will work just fine.
The belts are simple o'rings, but they last quite a long time. I can send a couple (no charge) and that should last you for quite some time. They can also be picked up at almost any hardware store. If you would still like me to send 10 it would be $.50 for each additional one.
Yes, it uses a 10-32 draw-bolt, and I have an idea etched in my head for a ATC design. It'll be sometime down the road, but is an item I'd like to get out to the public.
Please let me know if you have any other questions.
Thanks again,
WgE.