Paul
 Do you remember someone adapt a stattor from Harley Davidson for 12 volts power
 source to Tracy front plate and i try to find those photos
 Did you had some report of trial from this guy??


 Jean Prudhomme

 I could not find any messages on the subject but it does not
 have the 300 volt coils for the ignition system. Just makes
 a good alternator.

 Paul Lamar

        
Yes Paul but we received all installation photo and it can be a good reference
to see how he install the flywheel and also the set up on the plate ,i saved
those photos but i can,t put my hand on.
May be he reads your e-mail and if he can reply with the past informations


Jean Prudhomme

It may  have come from the idea from  the Revmaster version.


Here is an old message on the subject.

--------------------------------------------------------------
-------- Original Message --------
Subject: Flywheel alternator
Date: Thu, 19 Jan 2006 21:07:26 -0800
From: Rotary Engine <rotaryeng@earthlink.net>
To: AA-me <rotaryeng@earthlink.net>

Joe Horvath of Revmaster has developed a flywheel alternator
that should fit our needs if it will live at 7500 RPM.
Since it is a four cylinder it will work perfectly with
the rotary. Also the CD ignition might work great. If so it will
be a major improvement in simplicity and reliability.


I need to talk to him tomorrow.

http://www.revmasteraviation.com/products/under_development/index.htm

We need to do away with the common belt that drives both the water
pump and the alternator. Another source of failure.


Paul Lamar ...No rotor no motor.

The Rotary Engine NewsLetter. Powered by Linux.
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Copyright 1998-2005 All world wide rights reserved.

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Here is another old message on the subject.
I think either Mark Suspinski or Mark Steitle thought of
using the Harley. Also Mistral mentioned flywheel starter
generators before that.

----------------------------------------------------------------

-------- Original Message --------
Subject: Flywheel alternator
Date: Wed, 25 Jan 2006 07:23:47 -0800
From: Rotary Engine <rotaryeng@earthlink.net
To: AA-me <rotaryeng@earthlink.net



       Even if the revmaster alternator (dynamo) won't work as it
sits, this
       design seems very easy to copy.  The RPM issue is not a real
concern
       since the magnets are the only part of the assembly that's
     exposed to
       high rpm load.  If one were really concerned about
reliability, an
       alternator like this could be constructed at each end of the
engine,
       or two nested on one end, probably even driving by a single
set of
       magnets..

     I suspect that the alternator magnetic pickups are divided into
two sets
     just like the CDI energy coils. I know that GAMI was working on
an
     engine electrical system that electronically combined the output
of two
     alternators to provide redundancy(*); there's no reason that
RevMaster
     couldn't have copied that concept.

     Whoever talks to RevMaster about this beast please ask about
that.

     Russell Kent

     (*) On the theory that solid state circuits are orders of
magnitude
     more
     reliable than mechanical drive line parts.

     ---------------------------------------------------------

     Just talked to Joe and he said the coils are in two groups of
five. Two
     separate alternators with rectifiers. 30 amps total. He feels it
     might go to 7000 RPM
     but he will sell just the magnets and stator coils and we can do
our own
     carbon reinforced flywheel. He has the magnets cast for that
radius.
     He also says the neodymium magnets saturate at 4500 to 5000 RPM
but
     there is no real
     problem running it higher. You can reduce the saturation by
moving
     the coils
     radially inward if necessary.

     "Neodymium magnets offer the best value when comparing
performance,
     size and cost.
     They are moderate in price, very strong magnetically, and
typically
     allow for dimensional
     reductions. They have poor resistance to corrosion and should
have a
     coating or
     plating applied. Consideration should be given to the grade of
alloy
     when exposing
     Neodymium magnets to temperatures above ambient room. Neodymium
Iron
     Boron has good
     resistance to external demagnetization fields because of its high
     Intrinsic Coercive
     Force (Hci) . This resistance makes Neodymium magnets an
excellent
     choice for
     electromechanical applications."

     Paul Lamar ...No rotor no motor.

Great information.  This is a good direction to be going with
electrical
power.  Joe sounds like a pretty generous sort.

Paul, is your interest in adding strength to the flywheel driven by
concerns about the added mass of the magnets?  How heavily loaded is
the
flywheel without the magnets?

Regards,

Matt-

Yes. The magnets add mass without adding strenght. I think we need to
take
a close look at 7500 RPM.

Paul Lamar

Something else to check for is a galvanic reaction between carbon and
the flywheel.
Carbon will definitely eat Aluminum.  I assume to lesser degree steel.
Some people use an insulating layer of epoxy/glass between the carbon
and AL.

Cheers
Cary

Paul,
Have you looked at the after market high-output units for Harleys, sold
by Compu-fire (http://www.compufire.com/pages/harley-main.html).  They
claim 40 amps, 25 amps at idle.  The unit has 18 coils.  Looks like it
could possibly fit between the vibration damper and the psru plate.  The
entire kit sells for $400.

Mark S.

"3Phase Charging System
The Compu-Fire 40 AMP 3 Phase charging systems provide 25 AMPS at idle and 40 AMPS continuously
above 2800 RPM. The unique narrow rotor and stator combination fits Softail/Dyna primary cases and
the voltage regulator bolts on without any frame modifications. The precision balanced vented rotor
keeps the stator cooler in closed primary systems to maintain maximum output under all high current
draw conditions. The large flanged seal spacer provides maximum support for the rotor and the
voltage regulator output is calibrated to 14.25 volts from idle on up."

Wow that is a bargain. More current than Revmaster and way less cost.
It could also fit around the PSRU snout possibly. Then you don't have
to worry about it blowing up at 7500 RPM.

If it will live on a Harley it will live on anything :)

I'll think I will go out there and take a look.
I'll also send them email and see if they can give me the dimensions.

Paul Lamar

The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2005 All world wide rights reserved.

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