Mailing List flyrotary@lancaironline.net Message #63310
From: William Jepson <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Permanent Magnet Backup Generator
Date: Mon, 17 Apr 2017 23:20:25 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Todd, nice work on your adaptation. Car endurance racers are using a crankshaft driven (normal front end in the car) unit that replaces the harmonic dampener. It is made by Race-Mate. I don't know if they were really successful, but I was negotiating a unit for rotary engines that would bolt on. I was forced to change jobs and couldn't afford to follow up with it. If they are still around the machining challenged could give them a call. You did very nice work though.
Bill Jepson 

On Mon, Apr 17, 2017 at 2:31 AM, Todd Bartrim <flyrotary@lancaironline.net> wrote:
Many years ago we discussed on the list various ways to implement backup electrical sources for our electrically dependent engines. A great amount of discussion was around permanent magnet type of generators. 
   An idea was hatched and discussed, then forgotten. Except I didn't. Some years and a few sleepless nights later I set upon achieving this. Most of the work was done and reported to the list quite a few years back, but at that time I knew I had to set it aside for some time as I had other commitments. 
  At last report I had finalized the mechanical aspect but had made no attempt to integrate it into the electrical system. I've now finalized this and yesterday ran the engine for the first time. Everything worked excellent! So far it seems to have been a tremendous success.
  So I have updated my word document of the procedures for this modification. Including a wiring diagram. 
For your entertainment I've put it on Google Drive in Word format where it can be accessed at the following link

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