Hi Paul

Thanks to you and Robin for the hospitality last week, glad to meet you
both and see work in progress. What do I owe you for the book? Dinner
and tip was about $65, I figured that would cover it but let me know.

I went on to Chino for four days of Rotax school. At first it seemed
like a lot of formality learning their document and approvals system,
but after a couple hours on the first day we got into the good stuff.
The instructor was Ronnie Smith, an A&P from Mississippi you've probably
met at S&F among other places. He explained the design of the engine
well, and how a competent mechanic could do what was needed with simple
tools.

People talk about the overload clutch that tries to prevent crank damage
in the case of a prop strike, but the real news is the dog gear that
breaks torsional resonance by uncoupling on excursion peaks before the
peak torque allows things to break. Mating dogs and a couple of
Belleville washers is all it takes, it stays in oil and has no elastomer
to decay. Have you looked at this as an alternative to the rubber damper
on Tracy's version? You can't ever get rid of the prop/gearbox/drive
resonance but you can prevent it from becoming destructive if you can
detune it on peaks. If you can get a look inside a 912 gearbox I think
you might want to do that.

Also, please keep me in mind if you decide to sell your 182. I have not
decided whether I want to adopt a certificated aircraft again, but let
me know.

Cheers

David Josephson

Your welcome David. The dinner more than covered the cost of the
book. Thanks for dinner.

I am familiar with that but it is expensive to machine and quite heavy.

I might sell my C182 but I would have to finance it as I don't want
to pay considerable capital gains tax on it. This would up my monthly
income which as a retired person with a small amount of SS  I
would not have to pay tax on. You would have to insure it of course
payable to me.

Paul Lamar


The Rotary Engine News Letter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
You Tube http://tinyurl.com/beqqxas
Copyright 1998-2015 All world wide rights reserved.