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Old 04-23-2009, 10:54 PM
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az_gila az_gila is offline
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,975
Smile The design strength...

Originally Posted by scsmith View Post
My OPINION is that I think it is better to use a higher strength nut, and I will. It may be that the existing nuts are fully adequate, I don't have any evidence that says otherwise. It is likely that there are other weak links in the assembly that would usually fail first. It is also possible that a particular scenario would lead to failure of the nut before any other part failed. I might as well go for all the strength I can just in case....
...used by the designer should be from MIL-Handbook-5.

The applicable page is here, but I don't know which bolts are specified, so I can't give the design ultimate tensile strength.

How do these numbers fit in with your tests?

Note "d" certainly fits in with your conclusions.
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
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