OK, I'm home from work and have a little more time. Of course, I also have a six pack of 6% Black Crown I bought out of curiosity... maybe I better type fast anyway.
After doing the arithmetic on the first motor, 260 output watts turned out to be roughly a 1/3 horsepower motor. If people can run the average mill with a battery-powered drill motor, I imagine you can run one with that motor - and according to day_trippr's post, the gearing puts you right in the middle of the recommended RPM range.
But I think you're going at this bass-akwards, or putting the cart before the horse, or whatever. First, you need to decide which mill you're going to buy. Then you can start matching motors to it....
If you're going to buy a Corona corn grinder-type mill, I seriously recommend not trying to hook a stationary motor up to it. Don't get me wrong. I have one myself, and it works fine for what it is. But they're built to very casual standards (the ones from China, at least), because they're intended for hand cranking. Things are out of alignment, things are off-center and wobble, so on and so forth. There's a good chance the motor setup will put a bind on it, unless you're lucky and got a good one.
If you want to motorize one, I recommend removing the handle, inserting a hex head bolt in place of the handle hold-down, and using a drill motor with a socket adaptor. That gives you some play. Somewhere in the forum there's a thread where a guy says he cut the hex head off, chucked the bolt directly into his drill motor - and snapped it off while grinding.
I'm not personally familiar with any of the roller-type mills. But if you decide to buy one of them, do a search and sort through members' comments. There's an incredible wealth of experience already posted here on HBT...
