B
Bob Masta
Maybe not compared to winch motors, but wiper motors have a
*surprising* amount of torque for their size... they have to, to be
able to deal with long wiper arms, that can get iced to the glass,
etc.
Years ago as a young engineer at GM's Cadillac Dvision I needed to
power a test rig for something (don't recall what) and grabbed a wiper
motor that was sitting in the lab. To check that it was functional,
I simply held it in my hand, unconnected to anything like a mechanical
load, and clip-leaded it to a big 12V 20 A bench supply. The no-load
counter-torque was astounding: ripped it out of my hand and whacked
me on the knuckles with it's flanges... punishment from the electron
gods for lack of respect! It was by far the most powerful motor for
its size that I had encountered up until then.
Best regards,
Bob Masta
D A Q A R T A
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