nuckolls.bob(at)cox.net Guest
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Posted: Tue May 20, 2008 6:11 am Post subject: Any legacy regulator gurus out there? |
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At 03:21 AM 5/20/2008 -0700, you wrote:
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Sir, I dont quite want to claim guru status, working on my previous C150A
from '61 it was similar and I did reset the V reg to around 14.4 - it was
sitting about 13 - and reset the I reg with a wirewound resistor (one of
those old monster types with the sliding clamp) to get the output up to 12
amps or so from the 'as found' 6 amps. It was actually a 20 amp generator
but 12 is enough when the professional fix would be 100s of miles and $ away
I dont recall whether I altered the gaps or tension for this but I did it
after cleaning the contacts from 40 years of pitting with a burnishing tool.
Some time later I had a low charge again and discovered the aircraft
master switch - which thoughtfully includes cutoff contacts for the
generator field line - was in need of similar refurbishing. love these old
systems because they are actually repairable - just go to where the smoke
last escaped from...
Moral of the story for me was I had wrongly assumed I knew enough not to
check the aircraft schematics first. In all probability the regulator may
have been OK but the worn switch in the field line had reduced the drive.
It did no harm checking the regulator and it would have been a shame to
have it binned as it looked like new inside just as the ones pictured. So
I concur with your notion to have him only mess with the V reg - perhaps
after cleaning the contacts and checking the other wiring for hidden
resistance.
Ralph
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Thank you for sharing this. I'll include it in my compilation
of hands-on experiences to forward to the gentleman who also
has an old C-150!
Bob . . .
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