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Subject: RE: [FlyRotary] Re: 2nd battery Re: Amps required to run engine &amp- hours available
Date: Tue, 22 Feb 2005 13:33:00 -0600
Message-ID: <87DBA06C9A5CB84B80439BA09D86E69EC07F9F@MAIL01.austin.utexas.edu>
Thread-Topic: [FlyRotary] Re: 2nd battery Re: Amps required to run engine &amp- hours available
Thread-Index: AcUZEdhVZODCPXSJRYCPAKwCtNVnewAAIgAA
From: "Mark R Steitle" <mark.steitle@austin.utexas.edu>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Bill,
OK, now you've got my interest!  A crank mounted alternator could make a
great backup power source.  So, why can't we come up with a simple
method of mounting a PM alternator, or 55 amp ND, on the end of the
crankshaft?  That shouldn't be too hard to do. (easy for me to say)=20

I went with the Aero-Electric Z-14 approach (two alts, two batteries).
I rationalize that chances are slim that both alts will quit on the same
flight, unless I break a belt and it takes out the second belt.  If I
lose both alternators, then reserve battery power (dual Odyssey 680's)
will be used to get me to a safe landing site.  The plan is to replace
the belts at every annual.  Biggest worry is engine overheating &
seizing due to loss of water pump.  An EWP would fix that. =20

Mark=20


I believe they have also done crankshaft pulley alternators.
Bill Jepson=20