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Originally Posted by SW
Hook 'em together and see which one wins.  |
Hoo ha! That's a good one
FYI - what happens if you run a motor backwards when the brushes are advanced against rotation in the "default" direction:
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I installed my brand new 8" motor as it was shipped to me, and in the first 5 miles it burned the brushes and ruined the commutator. Turn out that unlike other cars on Hondas the motor shaft rotates CW, but default plate advance is made for CCW. No one mentioned that, and I always thought that DC motors are symmetric. Expensive mistake, exactly because of brush advancing. I'm sure I am not the only one discovered it hard way.
Source: ev archive
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Most motors run CCW (facing the output shaft) by default (ie turning the tranny input shaft CW). But this guy put his motor on one of them "backwards" Honda trannys (CCW input shaft), and just reversed his field to make the motor spin the other way. Oops. His brushes were timed for the other direction. Must have been some good fireworks going on that of course he couldn't see.
I guess I'll be looking
pretty carefully at this this weekend.