Wing repair question

[Del K. Rykert]

To add one thing to Ed's suggestion I would take the covering back couple of
inches at least to test and check for stress cracks that can be fixed with
CA. If foam is present use the type that don't attack the foam. If the chunk
removed allows you to see your main spar then I would feel secure that you
haven't weekend the wings integrity. Look for cracks while flexing and load
stressing the wing.
    It is a pain but none of my repairs had in flight failures.

                         del
               NSRCA - 473
----- Original Message ----- 
From: "Ed Deaver" <divesplat1 at msn.com>
To: <discussion at nsrca.org>
Sent: Sunday, March 21, 2004 4:16 AM
Subject: RE: Wing repair question


> Hey Mike, sorry to hear about the fence, but know it can be dangerous.
>
> I have fixed wings with a piece of contest grade balsa, just cut to size,
> glue in with elmers, titebond etc.  Put some masking tape on the wing(to
> keep from changing curvature) and sand down to the proper contour, remove
> the masking tape and sand a little more, carefully.  Fill in any
> imperfections and you're ready to cover.
>
> Had to do this on Joe's Prophecy last year(errant taxi run by sport pilot
> meets wing) and didn't have any effect on lateral balance, even though the
> repair was close to the wing tip.  Can't tell to look at the wing that it
> was repaired.
>
> See ya in June.
>
> ed
>
>
> >From: Legend5rc at aol.com
> >Reply-To: discussion at nsrca.org
> >To: discussion at nsrca.org
> >Subject: Wing repair question
> >Date: Sun, 21 Mar 2004 01:02:33 EST
> >
> >Well, I finally did it.  After six years of flying pattern, I finally
> >caused
> >damage to one of my planes.  Engine died on the landing pattern and I
could
> >not get back to the runway.  Did manage to catch a fence in the process
> >though.
> >Caused minor damage to one of my wings.  I have already removed a section
> >two
> >inches wide by 1.5 inches deep, cleaning out a gash that was created by
the
> >fence.  My question to this list is about the repair.  I have done
repairs
> >like
> >this before, but never on a wing as thin as this, and never on an
airplane
> >that I care as much about doing a bang up job on (pun intended) fixing
> >properly.
> >  I am a little concerned about making sure the repaired area is strong
> >enough.  The damaged region is 2 inches outboard of the landing gear so
at
> >least it
> >is not in a very highly loaded zone.  Any suggestions people may have
would
> >be
> >appreciated.  Thanks.
> >
> >Mike Cohen
>
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