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  #31  
Old 06-29-2022, 07:26 PM
johnbright's Avatar
johnbright johnbright is offline
 
Join Date: Aug 2010
Location: Newport News, Va
Posts: 444
Default My VAF search

I haven’t done it yet but looks like good info here: https://vansairforce.net/community/s...d.php?t=133761

And post 6 of that thread has this link: http://www.rvplane.com/?categoryid=3&dayid=567

Post 18 reiterates how to hide the hinge eyelet gaps.

Some in the thread speak of 1/8” play at the trailing edge. I assume they mean vertically.
.
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  #32  
Old 06-29-2022, 07:59 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,353
Default Wingtip hinge movement

I just thought of something.
Is it possible the movement isn't due to the hinge?
Maybe it's because the wingtips are so flexible. Some builders stiffen the open areas top and bottom with various materials. I used 1/4" dowels. Two top and two bottom.
Just a thought.
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Estes Park, CO
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Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #33  
Old 06-30-2022, 06:43 AM
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SeanB SeanB is offline
 
Join Date: Dec 2006
Location: Colorado Springs
Posts: 664
Default

Hi Larry,

I was also questioning the flexibility in the tips. But, I installed two upper and two lower stiffeners per tip. Foam, faired micro, then two layers of 9 oz. cloth to encapsulate. Made the oil canning go away very well. Same movement persists on aft tip though. When I lift the aft wingtip, I can see the movement uniformly going forward along the upper rivet line. This makes me think it is the spacing between eyelets, once more.

I wonder if Mark and Joe’s methods to arrest hinge movement includes installation of stiffeners or not. This could lend answers toward wingtip flexibility being a contributing factor.
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Last edited by SeanB : 06-30-2022 at 06:55 AM.
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  #34  
Old 07-01-2022, 01:01 PM
Outflyn Outflyn is offline
 
Join Date: Apr 2014
Location: Georgetown, KY
Posts: 3
Default Clean Lines

I used the hinge attach method 1) because I think it makes for a much cleaner look and 2) to make removal quick and easy. I also added stiffener strips inside the tips.

Here’s a picture of my tip to wing fit up.
https://eaabuilderslog.org/showmy.ph...E25A0EF23.jpeg
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Last edited by Outflyn : 07-01-2022 at 01:15 PM.
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  #35  
Old 07-01-2022, 01:30 PM
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SeanB SeanB is offline
 
Join Date: Dec 2006
Location: Colorado Springs
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Default

Mark….beautiful! That’s what I’m shooting for with mine.
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  #36  
Old 07-05-2022, 09:32 PM
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SeanB SeanB is offline
 
Join Date: Dec 2006
Location: Colorado Springs
Posts: 664
Default

I decided to give Joe’s idea of a hinge spanner bracket a try. I elected to install mine near the aft part of the bottom hinge. Keeps the fasteners “hidden”, but not as easy to access. Also, I can see this location being overlooked while removing a wingtip and maybe causing damage when pins are removed. I definitely notice a difference on the right tip, that had the most movement. If it was a 1/4” movement before, it may be 1/16” now. Happy for that. Again…thanks everyone for your ideas of various solutions. Way too much time on the wingtips. Time to move on to the next bout of fiberglass fun…the empennage fairing!
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