Re: (ET) mower motors

[Chad Bush <bushman165s aol com>]

I haven't thought about those steel shims much, but after all of my research on magnet epoxy and motor work, I can see where adding those shims and then applying metal-to-metal adhesive (like JB Weld) would be a much stronger bond than the magnet-to-metal. I don't know how they "make" these shells, meaning I don't know how they set the magnets and get them aligned, not only rotationally, but axially in the shell. I don't believe they have anything to do with the field being generated by the magnets.

My 2 Cents,

Chad Bush

-----Original Message-----
From: Kim Petty <kim coveside net>
To: Elec-trak <Elec-trak cosmos phy tufts edu>
Sent: Sat, Nov 21, 2015 11:01 am
Subject: (ET) mower motors

I am going through a set of big mower motors that were quite rusty. The steel shims that are glued to the ends of the magnets are pretty much gone. I am trying to picture life without them .Does anyone know what their function is ? Is it structural (in which case I would just use a fillet of J&B Weld) or do they have something to do with the magnetic field ?
thanks, Kimball
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