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Date: Thu, 12 Jun 2008 10:13:07 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Timing Pick- up
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George Lendich wrote:
>
> I was thinking I could fix the rotor ( with pick up) to the back of 
> the PSRU and attach the generator shell to the flywheel damper assembly.
>
That is EXACTLY what I'm doing.  Attaching the stator to the back of the 
PSRU was stone simple.  I turned down the PSRU's back cover plate so 
that there was a ridge that fit the inside of the stator.  With the 
stator thus located, I match drilled four of the mounting holes into the 
back of the plate.  I countersunk the other side of the plate then used 
four flat-head screw into 3/16"x3/4" coupling nuts.  3/16" pan-head 
screws through the stator into the coupling nut, and I was done.

The rotor is going to require that I do some precision metal bending to 
get a viable standoff.  I might try milling the standoff from an 
aluminum plate. Haven't decided.
> If your design is easier I am happy to look at that as well - I'm just 
> researching as much as I can while I have some time to do so. I have 
> some big projects coming up soon. One thing that concerned me about 
> the permanent magnets was the heat sensitivity. What Amperage is your 
> generator?
>
It's a 35Amp generator that will be stuck out in the wind fairly well.  
All the intake air will be sucked passed it before being blown into the 
engine.  Heat will be less of an issue than in it's designed environment 
on the front of a Harley.