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Oil canning on forward fuse

 
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ron.mcgann(at)baesystems.
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PostPosted: Sun Apr 30, 2006 3:30 pm    Post subject: Oil canning on forward fuse Reply with quote

G'day all
Just had an awesome weekend and made some significant progress.  Finished tailcone attachment and got those mongrel rear floor pans installed.  Decided to do some clean up and admire the work to date.
On inspecting the forward fuse skins, below the F1088 rib and just forward of the wing leading edge, I noticed a bit of a 'bulge' in the skins.  Applying some pressure to the skin reveals a bit of oil canning.  This is present on both sides.  Don't know what happened here, followed the plans to the letter.  Is this typical?  Is there a fix?
cheers,
Ron
187 fuse

 
 
 


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Tim(at)MyRV10.com
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PostPosted: Sun Apr 30, 2006 6:18 pm    Post subject: Oil canning on forward fuse Reply with quote

I did the QB fuse, so I can't say that I've ever seen or heard of that
area being a problem, but if everything else looks normal, you could
use some length of J-Channel or thin angle and either proseal or
rivet a stiffner strip in if you think it'll oil can. That should
stiffen it up if needed. We'll see what the others have to say
though...there may be more to it than I know.

Tim Olson - RV-10 N104CD - Flying
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McGANN, Ron wrote:
Quote:
G'day all

Just had an awesome weekend and made some significant progress.
Finished tailcone attachment and got those mongrel rear floor pans
installed. Decided to do some clean up and admire the work to date.

On inspecting the forward fuse skins, below the F1088 rib and just
forward of the wing leading edge, I noticed a bit of a 'bulge' in the
skins. Applying some pressure to the skin reveals a bit of oil
canning. This is present on both sides. Don't know what happened here,
followed the plans to the letter. Is this typical? Is there a fix?

cheers,
Ron
187 fuse









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Rick S.



Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas

PostPosted: Sun Apr 30, 2006 6:38 pm    Post subject: Oil canning on forward fuse Reply with quote

Ron,
 
I have a touch of this as well, nothing major and I hope it fades away as the fwd fuse goes on and all other pieces come together....mine is very minor and has gotton better as more work is completed. Since this is such a small area I could not even consider some kind of fix, FWIW, it's only my left side, right side does not do this at all. I can live with this small area especially since it appears to be getting better as I progress.
 
Rick S.
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Rick S.
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ron.mcgann(at)baesystems.
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PostPosted: Sun Apr 30, 2006 6:53 pm    Post subject: Oil canning on forward fuse Reply with quote

Thanks Rick.  Mine isn't serious either, but it's a bit annoying.  I spoke to Jon Johanson (of RV-4 'round the world fame) about it and he suggested to leave it until the top forward fuse goes on and the engine is hung.  As you say, it will probably improve as work progresses.
 
cheers
Ron
 
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acs(at)acspropeller.com.a
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PostPosted: Sun Apr 30, 2006 8:05 pm    Post subject: Oil canning on forward fuse Reply with quote

Ron, I've had a few very minor issues including some similar to yours in various spots. I've suspected at times a slight twist in the overall frame mainly due to the positioning of the various supports for the fuse and the tailcone and so on, and this leads to the need for minor adjustments to enable certain parts to be correctly aligned. As I've progressed I've found most of these tend to "iron themselves" out, once I have the loads on the frame correctly supported.
John 40315
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flysrv10(at)gmail.com
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PostPosted: Mon May 01, 2006 2:15 am    Post subject: Oil canning on forward fuse Reply with quote

I had them on both sides of the fuselage too. They now hide behind
the wing root strips.

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On 4/30/06, McGANN, Ron <ron.mcgann(at)baesystems.com> wrote:
Quote:


G'day all

Just had an awesome weekend and made some significant progress. Finished
tailcone attachment and got those mongrel rear floor pans installed.
Decided to do some clean up and admire the work to date.

On inspecting the forward fuse skins, below the F1088 rib and just forward
of the wing leading edge, I noticed a bit of a 'bulge' in the skins.
Applying some pressure to the skin reveals a bit of oil canning. This is
present on both sides. Don't know what happened here, followed the plans to
the letter. Is this typical? Is there a fix?

cheers,
Ron
187 fuse


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