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Date: Tue, 22 Feb 2005 15:28:00 -0700
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
From: Bill Dube <bdube@al.noaa.gov>
Subject: Re: [FlyRotary] Re: 2nd battery Re: Amps required to run
  engine&amp- hours available
In-Reply-To: <list-754906@logan.com>
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>  The claim that it won't overvoltage is absolutely false.  In the bottom 
> of the picture on the right.  That is the regulator.  It works by dumping 
> excess energy to ground.

         How do you know this?

>   It looks like a heat sink, because it IS a heat sink.  If that thing 
> burns out and you rev high enough that the rest of your system can burn 
> off what the generator puts out, you're in an overvoltage situation.
>
>The specs claim 1/3rd Hp to drive it.  That is about 18A at 13.5V.  I'll 
>make a big assumption here and assume that they rated that at 5500RPM, the 
>same number they used to compare the pump flows at the bottom of the spec 
>page.  Using this on the end of the crankshaft would be a simple matter of 
>bolting the coil pack to the front housing and the bolting the 'can' that 
>carries the magnets to the end of the shaft.  Many motorcycles use this 
>exact same setup, and you can buy some of those packages for about 
>$100.  I looked at and rejected those, because 18A isn't enough for a 
>replacement; though it will do as a backup.
>
>Harley Davidson makes a similar setup for their Goldwing bikes that is 
>35A.  That is the one I want to look at.

         Do you have a web page or a picture for that unit?