Tons of different suitable motors out there...
The problem with recommending something is the specifics...
Never know if one version is the same as the next.
Pretty much have to keep your eyes open and have an understanding of what your eyes are looking for.
And since we do not know what continent you are on, we can not make too many relevant recommendations.
And as soon as something is posted, the value shoots up.
IE: I wondered about a treadmill motor from the Surplus Center for a few years.
Bought a couple. They worked well. So I posted it.
Tried to buy another a month later. "Sold Out". How can that be??? They had 3500 of them a month ago!
Found a catalog that was a few years old, and they were listed, and they had 3500 of them back then!
Meaning they could hardly sell them at all for $9.99 (no kidding).
Then they sold out in a month.
Then they showed up on ebay (missing the flywheel) and selling for $50 to over $100.
It was a neat little motor for $10. Not so nice for $50, or $100, especially when the left-hand threaded flywheel was removed to save shipping costs.
It was the McMillan, 2.25HP, 260V, 5A, 5100RPM.
Like mixerman said, I do have a good supply of ECMs I am selling well below what they generally sell for on ebay. And this is what they are,http://s701.photobucket.com/albums/ww20 ... onversion/