Steel Soldiers::Military Vehicles Supersite - View Single Post

m16ty · 01-11-2009, 01:44

Quote:

Originally Posted by gringeltaube

What we really needed to compare is its shear strength.
I would take a ¾” bolt with its nut on, drill a 9/32” hole through both, clean and lube, stick the pin in, hold the bolt head in a vice, turn the nut with a torque wrench and read how much it takes to shear each sample.
This isn’t scientific but probably practical enough to be performed repeatedly anywhere in the world to help us select the material that comes closest to what you find for the OEM pin.

G.

Better yet is you could find a rod close the the dia. of the winch input, slip a piece of pipe over the rod, drill through both for the pin, weld nut to pin, and put rod in vice. You could then use a torque wrench on the welded nut.

Only problem with my idea or yours is a "click" torque wrench isn't going to give you a reading at failure ( you may could just adjust it up a little at a time and make it work) and a "beam" wrench is going to be hard to read at the failure point. There may be a torque wrench that will store max torque applied but I've never seen one.

My line of thinking is now that we know the alloy there is going to be a noticable difference in hardness of the different heat treated 2024 rods so I'm still wondering if my "drop test" would work?