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.

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