4" Shear Strength

Garage talk. Anything from mounting a winch to water proofing the electrics.
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fweddy
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4" Shear Strength

Post by fweddy »

Shear pin is broken on my PTO. (factory cruiser)

What is the shear rating for these, I've been recommended to drill it a little larger, and also some one suggested a bolt (LT) and take a few spares.

Might sound silly, but what is the shear strength on a galv 4" nail? esp as opposed to something else the same diameter?
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coxsy
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pto

Post by coxsy »

it could be any where between 1 ton to 12 tons , stock pins are underateded to save the rest of the pto system from damage , if it broke you should of used a share block to reduce the load on your winch, you go high share rate the rest of the winch could suffer
89 safari, pto winch, 33x15 simexs. sliders,75mm lift . turbo intercoolered
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fweddy
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Re: pto

Post by fweddy »

coxsy wrote:it could be any where between 1 ton to 12 tons , stock pins are underateded to save the rest of the pto system from damage , if it broke you should of used a share block to reduce the load on your winch, you go high share rate the rest of the winch could suffer


Pin was gone when I bought truck

Was thinking the nail would work as a temp measure for the weekend as would be lower shear strain than a std shear pin or LT bolt recommended by cruiser specialist - but may be mistaken?
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coxsy
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pto

Post by coxsy »

go the bolt nail have high tenstile stregnth
89 safari, pto winch, 33x15 simexs. sliders,75mm lift . turbo intercoolered
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tgaguy1
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Post by tgaguy1 »

I run a 8mm low tensile bolt (grade 4.6) in the front of mt pto shaft (easy to get at in the middle of a mud puddle) and a higher tensile bolt in the rear postion (grade 8.8) the theory is (and has worked so far) that the lower tensile bolt will shear first. I can get to it easily to change it out. I have loaded the pto system many times with this configuration and it seems fine. The low tensile bolt shears at about the same or just a bit more than the nissan shear pin.
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