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Ken,
It would have to come in at less than 6# for it to beat out the Geo
alternator. The John Deere permanent magnet alternator is even
lighter than that. It looks pretty hard to beat when you realize
that it would let you continue your flight on to completion, and even
return to your home base if you prefer to fix the failed alternator at
your leisure.
Mark
At 01:31 PM 7/1/2004 +0000, you wrote:
Kevin and Mark,
I have also given the ATV/motorcle PM alternator a lot of thought.
The best solution would be to redesign Tracy's redrive with enough space
for a ATV flywheel to be mounted to the mazda flexplate but this isn't
practical. So that takes us back to the accessory side of the
engine, which is what Mark (and I) looked at earlier. I'll probably
work on this more after I finish the miniMax and get back on my RV-4
project (actually, I'm remodeling a bathroom at the moment, inclding
building a new vanity). The lure of electric power without much
weight is great; 7 - 8 amps would double our day VFR range if we lost the
alternator and had to depend on a 17 amp battery.
Ken Powell
- -------------- Original message --------------
- Kevin,
- I'm the person that posted the info on the Race Mate Alternator-Water
Pump combo. I don't know any more about it that what you can read on the
sparse web site. I really posted it to help stir the creative juices. I
had played around with the idea of using an ATV inductor coil set to
serve as an emergency backup. I had considered mounting it under the
crank pulley. I later changed my mind and went with dual alternators.
Much simpler, less costly to fix or replace, puts out more amps, and it
provided a second belt for the water pump. That's a combination that's
pretty hard to beat.
- FWIW, I saw a Jabiru a while back and it had a similar inductor coil
setup to power the ignition, and possibly lights (I didn't ask). If you
want to go down this path, you might take a look at the Jabiru for some
ideas.
- Mark S.
- Date: Mon, 21 Jun 2004 08:35:18 -0500
- To: Fly Rotary
- From: Mark Steitle
- Subject: Alternator - Water Pump Combo
- Here is a picture of the Race Mate alternator - water pump by Barrett
Engineering in San Diego, CA. I got the picture off ebay. Judging by the
picture on their web site, it appears to be a permanent magnet
alternator. I think this one fits small block Fords. They have a web site
(www.racemate.com),
with very limited info.
- Mark S.
From: Mark Steitle
<msteitle@mail.utexas.edu>
To: "Rotary motors in aircraft"
<flyrotary@lancaironline.net>
Subject: [FlyRotary] Fwd: Alternator - Water Pump
Combo
Date: Thu, 1 Jul 2004 12:43:52 +0000
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