Renner wippen losing pins

Susan Kline skline@proaxis.com
Sun, 9 Nov 1997 18:24:14 -0800 (PST)


At 05:33 PM 11/9/97 -0700, Bob Anderson wrote:
>I concur with David V. that clipping both ends is more likely to damage
>the bushing. The reason pins work their way out is that they don't fit
>tightly enough in the birdseye. If you think clipping both ends is going
>to stop them, you're wrong, IMHO(to use a favorite e-mail acronym).
>
>With one end clipped you have a 50-50 chance of the smooth end getting
>pulled through the cloth and into the birdseye. With both ends clipped,
>the bushing cloth gets the short end of the stick in all cases.
>
>To quote Cervantes' Sancho Panza: 'Whether the pitcher hits the rock, or
>the rock hits the pitcher, it's bad business for the pitcher."
>
>Bob Anderson
>Tucson, AZ
>


Bob, I believe this post referred to the pins through the butterfly springs
on an S&S wippen working out -- no birdseye to grip them, just the bushing
cloth. I thought clipping both ends was ingenious. I've never coped with the
problem myself, but clipping both ends to flare them sounded a little like
peening over a rivet to keep it from slipping out. This is not a moving
joint, either, unlike a flange, so I see no way for the rough ends to chew
up the cloth.

Of course a larger pin is more important.

For what little it's worth --

Susan

 

Susan Kline
P.O. Box 1651
Philomath, OR 97370
skline@proaxis.com


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