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From: "Gordon Alling" <gordon@acumen-ea.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
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Subject: RE: [FlyRotary] Re: New Flywheel for RD-1x redrives
Date: Fri, 3 Feb 2012 14:58:15 -0500
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Tell us more about this in-line generator.  This is the first I've heard of
it and it sounds interesting.  Is it a commercial product?  From whom?

Gordon C. Alling, Jr., PE
President
acumen Engineering/Analysis, Inc.

540-786-2200
www.acumen-ea.com


-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ernest Christley
Sent: Friday, February 03, 2012 2:33 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: New Flywheel for RD-1x redrives

Tracy wrote:
> Don't know the dimensions of the generator in question but one of the
> design goals was to change as little as possible, so the distance
> between engine and gearbox was unchanged.
>
Off the top of my head, the rotor is 1.25" deep, and would need a 6" dia
flat on the engine side of the gap, centered on the shaft.  The stator
fits completely inside the rotor, so it only needs 1/8" to allow for
routing the wires out.  If the space has been expanded even a small
amount, it should allow for a relatively easy addition of a compact 38A
generator, eliminating belts and pulleys.  I only have a microscopic
amount of time on mine, but it has been working so far.

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