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Old 03-07-2008 | 09:03 PM
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nauticom
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From: Gibsonia, PA
Default Need help correcting a building error

I'm in the proces of building a Ziroli GS Corsair. As you all may know the gull wing is often a challange to build right and true.
I find myself with an error in the accuracy of one of my wing rib's allingment to achieve the proper wing dihedral. As a result I have a gap of 1/8 inch on the bottom of the joint where the one outer wing panel joins the gull wing center section. This occured because one rib was not true vertical to the building board during construction frame up. Thus when I went to mate the outer wing section to the center section, I had a far to small dihedral. After filing and fitting, I can get the correct dihedral, but I end up with a big gap on the bottom of the joint. The gap is pie shaped, if you will, so I'm looking to build up the gap with material prior to final joining of the two wing sections.
I'm quite concerned about joint strength at this critical location of the wing.
I am now ready to either mix up some epoxy resin and micro-balloons , iron on Monocote to one rib, spray mold release on it and then pour in the above mixture into the joint and let set, then break alway.
The other idea is to use exopy resin and a saw dust mixture and do the same thing--the thought being that that combo would be stronger?
I do not want to wait until it is time for final wing assembly and do something. I would like to get it fixed now.
Need your expert help and advise.

PS:
I thought I was a very careful builder, lots of experience, but this one got away from me at a very bad location and you cannot hide the wrong dihedral.

Thanks,
BobM