Shaded-pole motors and ceiling fan motors are not the same animal. While both are forms of induction
motors they have different starting configurations. Typically, attic ventilator motors and such are
shaded-pole devices. As Dan pointed out they can be 2-directional for use in bathroom ventilators,
etc. They start via the "shaded" pole and then run synchronously with the mains frequency. OTOH,
many ceiling fans have more conventional induction motors with start and run windings. They are of
course, reversible and speed control is via switch-stepped values of start capacitance.

Bob Swinney
"Stormin Mormon" wrote in message
...
I've had some luck, blasting them clean with brake cleaner,
and then oil them up.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Jon Danniken" wrote in
message ...

A lot of shaded pole motors are tack welded or pressed, ie,
you can't
unscrew them to access the bearings and whatnot. Same thing
with washing
machine/dryer motors, although some of those you can rebuild
due to their
size (except for the epoxied ones, those are disposable).

Jon