Original poster: "Bob Thaden by way of Terry Fritz <twftesla-at-uswest-dot-net>" <robert.thaden-at-amd-dot-com> I just picked up an old teletype motor. It is rated 1800 rpm, synchronous, induction, 1/40 hp. I was suprised to see what looks like flats on the armature. Is this already a 'salient pole' motor? How big of a rotor could I turn? thanks a lot, bob