Subject: Wiggins couplings.
From: Paul
Date: 11/23/1999, 8:35 AM
To: zz

X-Mozilla-Keys:                                                                                 
grobbins wrote:

Won't there be a possible o-ring wear problem due to vibration ?
Grant


Does not appear to be a problem as these are widely used in airliners
and military aircraft as well as most European race cars.
Some NASCAR guys are using them as well.

Paul Lamar


Jeff Spitzer wrote:

I'm not sure that the airliners et al are using them "in motion".  We had
some wear problems with metal to metal contact areas (mostly the clamp
rubbing on the tube ends)  when used in a highly dynamic application.  I
think the problems are not huge.

Jeff Spitzer

Sounds like a little self clearance'ing going on Jeff :-)
Maybe we ought to put more metal in that area.

I know a mechanic that is familiar with their use on a B2 bomber.
I will ask if they have had any problems.

BTW he told me about swaging tooling used for attaching
the pipe to the wiggins coupling without welding.
The tooling goes in the tube ends and expands the tube to 
lock into the internally grooved tube ends.

Paul Lamar
 
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