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mm mm is offline
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Default OT? where to buy motor brushes (for a convertible top motor)

On Sun, 28 Sep 2008 02:52:17 -0500, larry wrote:

mm wrote:

Check with electric motor rewinding/rebuilding companies in the Yellow
Pages. Most of them stock a huge assortment. Take in the brushes and they
should be able to match them. You can file or sand them to alter the sizes
slightly if you can get something close.


A very good idea. I callled a motor store (I've only found two in
Balitimore, and this is the bigger one, very big, very busy) that I've
bought a replacement motor for my roof fan, and he said they only did
AC motors, and the brushes would be too big, so I thanked him and hung
up, but if I'm going to have to sand them down anyhow, what's a little
more sanding.


You mentioned two layers, your brushes might have a copper
nickel and/or silver plating. That minimizes the resistance
of the carbon brush on low voltage high current motors.
Sanding those to fit will probably shorten brush life.
Check the commutator for dead or burnt spots. My old 914
had lots of motors, and I wasted many hours trying to
resurrect the dead. Occassionally a Japanese toy or tool
motor found a new home, all those motors aren't as different
as one might think. Hope you get your classic back to good
health.


Thanks. I'm sure I will.

-- larry/dallas