X-Mozilla-Keys:                                                                                 
Bill Freeman wrote:

Jeff Spitzer wrote:

OK here it is from the ASME handbook.

Paul Lamar

Did you read it or just post the pictures?  The text contains exactly what
Bill said and you've been arguing against.  Nesting bellvilles increases
the rate.  Back to back does as you say.

Jeff Spitzer

Yes I read it. I have not been arguing against nesting INCREASING the
rate.
How did you get that impression? Sheessss! Where did I go wrong? :-)

Bill doubted that back to back DECREASED the rate or at least that's
how I read his message on the subject. And Vance agreed with him.

Paul Lamar

Paul's RIGHT !  I agree,  I was previously wrong.  Arrg.   I neglected to
consider the increased travel would put half of the displacement on
each washer, thereby halving the effective total spring rate.  I stand
corrected.  However, Bellevilles are still pretty darned flexible in their
application and (apparently) pretty reliable.

Bill

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