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Delaminating aileron traling edge

 
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john(at)leptron.com
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PostPosted: Mon May 21, 2007 2:56 pm    Post subject: Delaminating aileron traling edge Reply with quote

Luis,
If your aileron is riveted every 6 inches or so I would not make the repair
an emergency or grounding, it is still being held just fine. Mine do not
have any rivets in them.

john

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lcfitt(at)sbcglobal.net
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PostPosted: Mon May 21, 2007 3:14 pm    Post subject: Delaminating aileron traling edge Reply with quote

Louis,

As I recall, the flaperons came glued and the rivets were placed exactly for
the reason you describe, to hold the things together when the glue fails.
It sounds to me like your fix is exactly what it calls for.

Lowell Fitt
Cameron Park, CA
Model IV-1200 R-912 UL Warp
1998 850 hrs.

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dosmythe(at)cox.net
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PostPosted: Mon May 21, 2007 3:56 pm    Post subject: Delaminating aileron traling edge Reply with quote

Louis,
I'm not sure I'd postpone my check ride unless this is some serious
structural failure. Sounds like it's a somewhat common problem that might
be more cosmetic than structural. If you are riveted every 6", the
flapperon can't come apart. I saw an award winning Fox (No Names) at
Sun-N-Fun in about 1997 that had the same thing you are talking about. I
noticed it then and decided to double up my rivets (3") on the trailing
edge. I didn't feel comfortable using recessed flushed rivets because of
the thinness of the material so I used standard 3/32". I then used a dremel
tool to trim all the rivets up to the ball on the back side. Once done, I
placed a small drop of West Systems epoxy on both sides (one at a time until
cured). It formed a small well rounded bubble to help hide the rivet.
Worked fine with "NO" delamination to date.

Don Smythe
Classic IV w/582
Newport News, Va.

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smokey_bear_40220(at)yaho
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PostPosted: Tue May 22, 2007 3:55 pm    Post subject: Delaminating aileron traling edge Reply with quote

I riveted mine every 3" just to be sure. Used pop
rivets, trimmed and mashed them to keep them small and
wide. Not as good as Don S, but strong and no
worries.

Squeeze a little epoxy in the seperated parts before
riveting. Something you can do in plenty of time
before your checkride.

And I agree with adding drain holes in the bottom back
behind each hinge. Think mine are 1/4" holes. Make
sure to do this carefully so as not to ding or
penetrate the top skin. Put a stop on your drill and
tape on the bottom skin so it doesn't get scratched as
you drill into it.

Kurt S.
S-5 NSI turbo
Florida and Panama

--- wingnut <wingnut(at)spamarrest.com> wrote:

Quote:
The tailing edge of my ailerons are riveted at about
six inch intervals and glued. Is this typical?


Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center.
http://autos.yahoo.com/green_center/


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kitfoxmike



Joined: 05 Dec 2006
Posts: 373

PostPosted: Tue May 22, 2007 4:43 pm    Post subject: Re: Delaminating aileron traling edge Reply with quote

you guys are going way over board on this. I used an426ad3-3.5 rivets, I have a bunch with my vans rv7 kit. I used a deburing tool and countersunk the top of the aileron and then put in a rivet and sqeezed them. I do 90degree banking turns, I do pull up at 90mph off the runway, I work this plane and no problems with this setup. Mine are spaced 6 inch. apart and no glue. I average 350hrs. a year on the plane, the last time I had to put in a rivet was about a year ago. That's when I put them in there for the first time this way. Hope this helps.

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wingnut



Joined: 11 Jan 2006
Posts: 356

PostPosted: Wed May 23, 2007 6:21 am    Post subject: Re: Delaminating aileron traling edge Reply with quote

Drat. I already panicked and canceled the check ride. Thanks for the help guys. I'm leaning toward re-glueing that trailing edge anyway just for aesthetics (not to mention that I already ordered that expensive structural epoxy from Aircraft Spruce Smile ). At least I'll have some piece of mind if it ever happens again.

Luis
N824KF


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