> Hey,
      >
      > Why don't we use Belleville washers on wood propeller bolts?
     Seems like
      > this is a similar idea to using constant torque hose clamps...
     As the
      > wood shrinks and swells (due to changes in temp and RH), the
     washers keeps
      > a relatively consistent clamping force on the system.
      >
      >
      > Regards,
      >
      > Matt-
      >
      >
      > I have always wondered about that myself Matt.
      >
      > Paul Lamar ...No rotor no motor.
      >

     [Herb Sanders] Make that constantly inadequate torque.

When I tried to do this some time ago the only Bellevilles I could get
were flattened before the correct torque was reached. Now I can't recall
what the correct torque is!
I have now found someone who can supply various thicknesses.

John Evans

A little suprising, as many wood props are only good to about 25ft/lbs on
a 3/8" bolt (before you start damaging the wood).  Seems like it would be
pretty easy to get the washers for that clamping force.  Plus you can
stack the washers to get more force.


Regards,

Matt-



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