"William Wixon" wrote in message
...
hey, i have another question if anyone would like to reply. i posted "OT
commutator wear" on 6/24/07, finally got around to working on this
inverter again. removed the armature (to bring to a electric motor shop)
to get the slip rings smoothed out and saw these (two, one on each end)
blobs of what i assume is JB weld on the windings. my first thought was
one of the previous owners put them on there to disguise damage or to
cover up a jerryrig repair job (is it possible to solder broken armature
wires?). my second thought was maybe they were applied at the factory to
balance the amature. i have no idea. asking you guys.

http://www.frontiernet.net/~wwixon/armature1.jpg
http://www.frontiernet.net/~wwixon/armature2.jpg

i was taking this inspection/repair job one step at a time, was reading
the service manual, procedure for disassembly, one of the steps was to
"...remove printed circuit board..." i was poking and prodding,
"...printed circuit board, printed CIRCUIT BOARD...." finally it dawned
on me there was NO printed circuit board. (one of the) previous owner
removed the printed circuit board and simply crimped together the wires
that went to it. THAT was a very depressing discovery/realization.
BUM-MER. replacement printed circuit board goes for like $230 but they
told me it's an older model and i'll have to get the "conversion kit" that
goes for $430, fukkin' bummer.

thanks for all your previous replies and thanks in advance for any info
y'all would like to impart.

b.w.

My opinion is that the blobs are to reinforce repaired windings. It would
seem pretty unusual to balance this way since you would have to let the
epoxy harden and then retry the balance. Balancing of armatures is normally
done by shallow drilling the rotor.

Actually, I think its pretty academic. A good motor shop can test the
armature and if it is good, then use it. I am curious what kind of circuit
board would have been removed, the wires crimped, and the unit still
operate. If you can obtain the circuit diagram a handy electronics guy
should be able to build a replacement.

Don Young