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| Most users ever online was 492, 10-08-2009 at 12:24. |
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General
Join Date: Aug 2009
Location: San Antonio TX
Posts: 502
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Quote:
Originally Posted by kipman
I am using grade two steel bolts.
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Don't use your winch with anything but aluminum or possibly brass. Steel, even mild steel, has over DOUBLE the shear modulus than aluminum.
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4 Star General
Join Date: Mar 2007
Location: Dickson,TN
Posts: 2,703
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Quote:
Originally Posted by Tennessee Colonel
but I wonder if there are any mild steel (non graded) pins similar to the ones I used to use in my bailer that would work. I hadn't considered brass. Any comments?
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I'm familiar with shear pins used in a New Holland baler. They would be too hard.
Anybody considering using anything but the stock pins needs to take a look at the chart gringeltaube took the time to research. All of the steel pins he tested were above the safe limit.
PLEASE READ THR CHART. He has taken hours of his time and money to do testing with nothing to gain other than helping us not destroy our winches.
Last edited by m16ty; 08-30-2009 at 23:05.
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3 Star General
Join Date: Mar 2006
Location: Pittsboro, NC
Posts: 873
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Quote:
Originally Posted by gringeltaube
Yes, but only if the shaft hole was already enlarged. Average shear strength was about 10% over stock AL pins for 5/16" brass pins.
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What Alloy of Brass were you testing with?
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Sergeant
Join Date: Apr 2006
Location: Seattle, WA
Posts: 72
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Shear pins: Steel is a huge mistake.
My friend also thought steel was simple. He put a roll pin in there. The hook on the 5T winch got caught on the bumper and the next thing he heard was the PTO being ripped off of the side of the transmission. Time for a new PTO and new transmission. It literally tore a large chunk away from the tranny.
What we need to find is the particular alloy of aluminum that is specified. They would not cost much to make. I can have a boatload made in a shop. All I need is one to work from and the alloy. Irv
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Corporal
Join Date: Feb 2009
Location: collinsville/al. 35961
Posts: 33
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I have used a cotter key that just fits in with great success. I have no way to test the tinsel strength though. It maybe to strong. If it is I have been very fortunate. Has anyone tested a cotter key? That would be a cheap fix if it is safe.
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Corporal
Join Date: Nov 2009
Location: charleston wv
Posts: 42
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I wonder how well a pto farm tractor pin from tractor supply would do ?
God loves you! Jesus Saves
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4 Star General
Join Date: Mar 2007
Location: Dickson,TN
Posts: 2,703
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Quote:
Originally Posted by Irv
What we need to find is the particular alloy of aluminum that is specified. They would not cost much to make. I can have a boatload made in a shop. All I need is one to work from and the alloy. Irv
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2024 AL
Quote:
Originally Posted by hank
I wonder how well a pto farm tractor pin from tractor supply would do ?
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Too hard.
Both of these questions have been answered earlier in the thread.
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4 Star General
Join Date: May 2005
Location: Montevideo/Uruguay
Posts: 1,381
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Quote:
Originally Posted by bottleworks
What Alloy of Brass were you testing with?
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Good Q., wish I knew the exact specs...! 
Store doesn't know..., hopefully their supplier does.... will try to find out anyways and let you all know!
G.
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The Following 2 Users Say Thank You to gringeltaube For This Useful Post:
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