Joseph Berki wrote:

Paul,
        Here are some shots of the carbon fiber prop/extension during
build.  Sorry this took so long

Joe Berki
Finding leaks in sump tank

Damn good idea. No problem with torsional vibrations here.
With a carbon fiber shaft 10 inches in diameter the torsional
resonant frequency must be ultra sonic. Light weight
in the bargain. Saves weight in the prop hub too.

Thanks Joe for sending those pictures.

Charlie Airesman is one heck of an inventor and a great creative genius.
He knows his mechanical engineering too.

I can't wait to see what he is going to do with his rotary powered airplane.
 
Paul Lamar
 
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