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For my personal preferences, just go have an alternator that was not belt driven would be great. I don't like the thought of a belt braking and possibly damaging my raadiator, radiator hoses, oil cooler, oil hoses, spark plug wires, ignition coil wires, firewall mounted control mechanisms, etc. Even if I only had one alternator, but it was not belt driven, I would call that a great improvement. Paul Conner
----- Original Message ----- From: "Mark R Steitle" <mark.steitle@austin.utexas.edu>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, February 22, 2005 1:33 PM
Subject: [FlyRotary] Re: 2nd battery Re: Amps required to run engine &- hours available
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)
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.
Mark
I believe they have also done crankshaft pulley alternators.
Bill Jepson
Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html
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