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Old March 2nd 06, 03:49 AM posted to rec.aviation.homebuilt
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Default Wood/composite prop bolt torque


GeorgeB wrote:
On 1 Mar 2006 10:37:28 -0800, wrote:

Stealth Pilot wrote:

yes we use belleville washers.


Belleville springs. This was a nit with an old engineer with whom I
worked and upon reflection, I agree with him.


I am not picking nits either, but the Belleville Spring Company says,
and I quote from their website, "Conical shaped disc springs were
first conceived in the mid-1800's and the invention was subsequently
called a Belleville Washer after its inventor Julian Belleville, who
received a patent for the product in 1867."

All the links are for disc SPRING or belleville WASHER.

What is your old engineer's source?


Probably an older engineer.

FWIW, my engineering text (disremember which) called them
springs.

--

FF


George