Mailing List flyrotary@lancaironline.net Message #43194
From: George Lendich <lendich@optusnet.com.au>
Subject: Re: [FlyRotary] Re: Timing Pick- up
Date: Fri, 13 Jun 2008 09:45:09 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ernest,
So we agree on the set-up of the rotor and the cooling is not an issue, I guess you had those plates laser cut -but how the hell are you going to do the windings. Can you explain your design for that.
George ( down under)

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.

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