Message text written by Jaime Schlorff
>Perhaps you've got a single speed motor wired to a two speed switch
and are consequently shorting out half the armature so that only the one side
getting proper polarity is actually turning the motor resulting in weak wipers.<
It has a couple of wires bundled coming out of the case. I did not disconnect
any wires as I was just trying to clean off the brushes. Now what the wiring is
REALLY doing, I don't know. I can try to measure the resistance with the
switch in each position.....
However, the motor did turn 2 speeds: anemic and more anemic. Now is has
one: stopped.
I do not know the electical construction of the motor, but
I guess that the two brushes run separate windings and the slow speed only has
one brush activated and high speed had both active?
To analyze this further, I need to figure out where those electrons are
supposed to be
going! It looked like the brushed were independently conducting because when I
lifted one off the commutator, the other one still wanted to try to make
sparks...
Whatever else, I did not mess with the wiring yet.
-Tony
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