nuckolls.bob(at)aeroelect
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 Posted: Thu Sep 08, 2016 6:52 pm Post subject: Alternator failure mode |
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The only explanation I can offer is that I lightly washed the alternator in solvent while it was removed for other engine work. I might have contaminated the brush/commutator interface. I didn't soak it--just a light external cleaning.
Any guesses as to how an impending failure like this could have given me the overvoltage without opening the field breaker? I hope this was a one-in-a-zillion and that Plane Power's overvoltage protection is useful. |
I'm not privy to the intimate details of
the Plain Power approach to modifying the
stock alternator for external control of the
field circuit. All I have to go on is based
on a telephone conversation with PP right
after the crow-bar mod came on the market.
Do you still have the whole alternator and
all it's pieces? I wouldn't mind doing a
autopsy on it. I'd pay postage both ways.
What I can see in the pictures doesn't give me
a clear notion of what might have failed first
but it would be interesting to see if that
fact is discoverable.
Bob . . .
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