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Thread: Winch Shear Pins

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05-31-2010, 16:56

#144 (permalink)

stumps

4 Star General

Join Date: Aug 2009

Location: Maryland

Posts: 1,656

Hi Gringeltaube,

I have no doubt that the pin's shear strength in a carefully controlled one time experiment is nearly the same...

But,

I think you will find that shear pin longevity drops drastically with a wallowed out hole. The lost motion caused by the wallowed out hole lets the pin go to one extreme of the hole when you unwind the winch, and to the other when you wind with the winch. Each time it travels through the lost motion, the hole takes a hard whack at the pin, and the pin gets hammered thinner.

-Chuck

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