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Old Jun 27, 2005, 10:57 AM
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I needed just a few thousandths of an inch more clearance between my stator and bell, and compressing the windings was not a practical option with my motor. So, I used a permanent flat file similar to the "Permagrit" variety that some of you may have to grind a brass thrust washer down to about 1/3 of its original thickness. I then placed it on the shaft with the ground end facing the bell, and the bevelled end toward the bearing. Results after reassembling the motor and testing it: no more bell/wire rubbing, and no loss in efficiency (which is what I got by "overspacing" with a full sized washer).
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