[TheForge] Re: A&O

Sat May 10 02:01:44 2003

me> In this case, I don't thing shock is an issue.  It's a compressor,
me> right?  It's turning 180 rpm (? I forget...) and mooshing air.

andy>   The bearing undergoes large spikes in stress when
andy>   the crank throw reaches top- and bottom dead center.
andy>   As long as the clearances are within spec., the
andy>   shock (impulse) is so small as to be negligible.
andy>   ....
andy>   But as the gap between the two increases, the differential in
andy>   velocity as the throw reverses suddenly and the rod keeps on
andy>   its merry way...

        [snip]

Oh, yes.  Good explanation.

- Mike

-- 
Michael Spencer                  Nova Scotia, Canada 

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http://home.tallships.ca/mspencer/