Wing tip hinges

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Joe Parish
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Wing tip hinges

Postby Joe Parish » Mon Jan 21, 2013 10:19 pm

Thinking about using hinge pins for my wing tips? I read Chads article in August 2012 Sport Aviation on his installation. He mentions needing .040 aluminum to use as a spacer between the wing skins and the hinge. I have a partial sheet of soft aluminum that is .030 thick, thinking of using that? Won't the fiberglass wing tips need to be sanded and pin holes filled etc. If the wing tip is sitting proud of the skin could it be sanded to be flush with the wing skin? Would that be way more work than just going with a thicker shim ? Thoughts appreciated.
Joe
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Wicked Stick
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Postby Wicked Stick » Mon Jan 21, 2013 10:36 pm

I just used the piece of fiberglass that gets cut off as the shim, makes for a perfect fit as it's exactly the same thickness.
Dave "WS" Rogers
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hydroguy2
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Postby hydroguy2 » Tue Jan 22, 2013 12:30 am

Me, too. I used the Fiberglass strip as the shim also

Image
Brian
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Joe Parish
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Wing tip hinges

Postby Joe Parish » Tue Jan 22, 2013 5:05 pm

Great idea! Thanks for the tip guys.
Joe
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bullojm1
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Postby bullojm1 » Fri Jan 25, 2013 10:10 am

Joe,

Using the fiberglass as a shim worked great and is easy to do. Here is a picture of how mine looks on the wing side:

Image

A complete write-up of how I did mine is at http://www.rvplane.com/?categoryid=3&dayid=567

Good luck!
Mike Bullock

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Wing Tip Hinges Bill of Material

Postby Bear Creek Aviation » Sat Jan 26, 2013 6:18 am

Does anyone have a bill of materials to accomplish this on a set of RV7 wings?

Terry

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Joe Parish
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Wing tip hinges

Postby Joe Parish » Sat Jan 26, 2013 12:45 pm

Mike, Thanks for the pic and link to your write-up.

Terry, You will need to order some AN257-P3 hinge pin to suit your installation, use the fiberglass that you cut off the wing as a shim and then you will need some epoxy system. The west systems epoxy seems to be pretty popular. I believe you need the resin, hardener and some flox. This is off the top of my head so check Mike's link above to see how he did it or do a search on google for Chads RV-7 and you should be able to find his write-up on his sight. August 2012 issue of Sport Aviation has a article Chad wrote on his installation. The hinge pins need to be longer than the hinges. Good luck hope this helps. Added link to Chads site.

http://www.chadandbrittne.com/November% ... ngtips.htm
Joe
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Empennage done
wings done
Fuse in progress
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