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Ski jump at wing trailing edge

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cdwambolt(at)cox.net
Guest

Posted: Sun Sep 03, 2006 5:32 pm Post subject: Ski jump at wing trailing edge

A while back there was a discussion about the wing trailing edge/flap intersection being too tight on QB wings, and a special tool that Van’s has to fix it.  I am searching and searching, but can’t find the thread.  I want to see some of the pictures again.  Can anyone point me in the right direction?  

   

Thanks  

   

Charlie  

       [quote][b]

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loringsrv8(at)comcast.net
Guest

Posted: Mon Sep 04, 2006 10:11 am Post subject: Ski jump at wing trailing edge

Well Charlie, I can't point you in the right direction but here is my experience (fwiw).  This is the first I've seen on the list concerning the flap fit but I had the same problem.  I appeared that the 'U' shaped spar had been slightly underbent on the top causing the skin and nose ogive to be slanted upward from where it should have been.  Using an adaptation of my tail surface trailing edge bender I clamped the flap in and bent the nose down.  It did indeed fix the fit problem but the flap skin was now dished out between the ribs and looked pretty bad.  It was apparent that the rivets were stressed and that I should have drilled them out before bending.  Then they could have been redrilled and oversize rivets put in (maybe).  So, as it turned out I bought a new flap and it fit just as well as the opposite one.  On my contact with Van's about this, they allowed as how it was probably impossible because everything is done by CNC machinery!  Having already bunged mine up, I f

 elt my

 only recourse was to by a new one.  Van's never indicated how to fix it or if they had any sort of a special tool for the job.  My suggestion would be don't do anything to the flap but return it to Van's for an exchange. (I wonder if there might have been a bad batch or something like that?).  Good luck!

Art Loring, Jr.

RV-8, O320CS, N211XZ, could fly this month

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