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Baron[_4_] Baron[_4_] is offline
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Default DC motor problems

Michael A. Terrell Inscribed thus:


Baron wrote:

Michael A. Terrell Inscribed thus:

A lot of those motors had the air flow over the commutator, and
it
would get dirt or sand in it when people didn't put the bag in
right,
or would use it till the bag was full, and ripped. I wasn't
working
would use it till the bag was full, and ripped. I wasn't working
on the vacuums, just the motors so the only parts I saw were new
bushes &
bearings. A neighbor was in the used vacuum cleaner business and
would give me half a van load of bad motors at a time, then buy
back any that I fixed.


That sounds like a nice little earner. ;-)



$10 to $20 for common motors, and $50 for Rainbow/Rexaire. He
would stop by in a panic, telling me what he needed. I'd tell him
to give me an hour to dig through my good motors and would try to
find one. Then i would dig out what he needed, and fix it. A lot
had dmagaed fans from metal or glass being picked up, so it was a
five minute job to remove them and a set of good ones from a burnt
out motor, polish the armature and put it all together. then the
scrap metal went into bins for the scrapyard. I got really good
with a wood chisel & various punches to remove the copper from the
old motors. The segments were easy to remove, with a pipe wrench.
Clamp the armature in a vise, and give a twist with the wrench. it
was kind of like taking corn off a cob. ;-)

Sometimes I would strip 100 bad motors at a time, for the good
parts just to make room.


A very profitable exercise nowadays with the price of copper being so
high. I just wish the thieves would stop stealing the iron grates and
aluminum road signs. A whole load of them have vanished overnight.
Not to mention the theft of copper wiring from the railway system.

Next door neighbor came round today and asked if I knew that water from
the kitchen sink was pouring out of the wall and onto the yard !!! The
swine had pinched the two meters of lead drain pipe between the wall
and grate,

--
Best Regards:
Baron.