Re: Servo motors

OK,
Another question born of ignorance, but I'm getting smarter by the letter :o),
Just acquired a few electric motors, about the right size, app. 3 1/2 X 5".
They are brush motors, run off of 120VAC also 12VDC, though not as fast, very
fast, 15000-20000 rpm, reversible, are they worth pursuing info on use as a
servo motor?
BTW, it has 22 commutators, 11? poles? wound field and stator windings
Thanx,
Tracey