This is not strictly Rotary related, but I thought it might be
   of interest.

        http://www.cozybuilders.org/Desert_Center/Prop_Bolt_Retention.html

        Brian Trubee


        He did it wrong. You don't need that much spring deflection.
   One or two
        springs
        would have done the job in parallel instead of some in series.
   0.012 deflection
        for the springs is near nothing.


        Paul Lamar ...No rotor no motor.


   Yes, it seems that you wouldn't need that many washers- really, how much
   change in dimension does a wood prop have? But, I like the idea of not
   having to constantly check retorque the prop bolts.


   Brian Trubee


Ya, what you said!

I guess Marc's credentials as a Master's degree level aeronautical
engineer from MIT, the fact that he now works at Scaled composites and
is an A&P were all wasted in his determination of the number of washers
necessary.

Actually he is using his plane as a test-bed to benefit not only himself
but those of us who might be interested.

Rich

Hey! Even the smartest people make mistakes. I do it all the time :)

Paul Lamar ...No rotor no motor.

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