synchronous motor

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Cydesho-at-aol-dot-com>

I'm sure all you guys out there are tired of discussing problems with 
converting motors to salient pole synchronous operation, so I apologize in 
advance. I just got the armature from my motor back. I had my cousin mill 
four flats in it at his machine shop. The motor is a Westinghouse ac 
induction motor. It is 1/3 of a horse power and runs at 1725 rpm. It is 
intended to run off of 115 VAC and draws 6.4 amps. When I got the armature 
back, I put it back in the motor housing and put everything back together and 
oiled the bearings. When I plugged it into the mains, it ran perfectly. In 
fact, it seemed to run exactly like it had before the flats were milled into 
the armature. I tested it by putting a white cardboard disc with a black band 
on it and watching it under a single fluorescent bulb, and the motor is 
obviously out of sync. I read much of the previous discussion about the 
problems with converting a motor to sync. It doesn't seem like any of the 
possible problems discussed before would be a factor here. It only has two 
input wires, and is not a capacitor start type. It doesn't grind, the only 
thing that I've noticed is that the motor runs slightly warm. All I can think 
is that the flats are not wide enough. My armature diameter is about 3 1/4" 
and the flats are 71/100 of an inch wide. If anyone can help me out here, it 
would be appreciated. 
                                Justin