OOPS, you are quite right. The so called 20 amp alternator from B&C will
put out a max. of 12.0 amps at 5500 engine RPM and 8 amps at 5000 engine RPM
(and the 8 amp version puts out 6.8 and 5.5 amps respectively for those same
RPM) because the accessory drive runs at 0.54 times the engine RPM. Time to
re-think the backup alternator - a small bump in the cowling is looking
better all the time.
Best regards,
Rob Housman
A070
-----Original Message-----
Behalf Of ScramIt@aol.com
Subject: Re: 18 amps from a 914 !!!
Been down that road. Have the vacuum spline on my 912S, I'm just going to
cover it up. The 20 amp B&C only puts out about 6 to 8 amp because the
spline
turns so slow. That's $650 for the alt. then you have to add a regulator
$750
or so for 8 amps. I'm going with the Rotax alt. as the main and installed as
back up.
SteveD.
A217
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