On May 17, 5:37*pm, sisu1a wrote:
Meanwhile, our Duo trailer has had two of these bolts
fail in the last week; one of my partners just showed
up and left a broken bolt on my desk.

Has anyone used NAS shear bolts as replacements? They're designed for
close fit, and have ~160-180,000psi in tensile and ~95,000psi in
shear (+CAD II plating...) *'normal' bolts are as low as around
50,000psi in tensile and not even rated in shear.

http://www.aircraftspruce.com/pdf/20...l/Cat11065.pdf

-paul

Interesting.

I have a 2002 Cobra trailer. Will have to check the bolts. Probably
should replace them. Not having the trailer nearby to go and look at
the relevant areas discussed above and not being that familiar with
it, it is somewhat hard to visualize and follow the discussion.

Anyone care to post a step by step "Replacing Cobra Hinge Plate Bolts
for Dummies" with specifics as to what type of clamp(s) and where to
put it(them), bolt specs, etc? Pictures would be a great help. It
would be greatly appreciated.

Thanks for the information posted thus far!

WD