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Posted by Desoto61 [138.162.0.45] on Wednesday, May 25, 2011 at 12:16:30 :
In Reply to: Just fill all the holes that line up. posted by Chris Case [63.199.245.249] on Monday, May 23, 2011 at 22:05:25 :
The repro doesn't have any holes! So I'm wondering which ones I drill out? Some were larger than others. More bolts doesn't hurt but it's a lot of drilling for something I don't need.
I saw that discussion and did some research through my old books. and here's what I learned.
Grade 8 bolts have a higher shear and tensile strength than grade 5. The tradeoff is that you have reduced the plastic region of the stress/strain curve. So as everyone stated in simpler english:
Grade 8 is stronger but it's failure mode is more sudden when it reaches that limit.
I was hoping I could just cheat off the factory engineers calculations on this one vice having to do my own on which one would be sufficient for the designed stresses.
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