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-   -   Wing upper skin(s) trailing edge turned up at rear spar (https://vansairforce.net/community/showthread.php?t=156997)

N329JR 01-18-2018 07:29 AM

Wing upper skin(s) trailing edge turned up at rear spar
 
I believe that I have seen a post or two on this issue previously.
I have riveted the the upper skins on recently and see that the skins trailing edge at the rear spar is turned up some amount.
I am wondering if all builders are running into this issue and are dealing with it by making a slotted bending block and bending the skin/rear spar flange combination back down flush.
Thanks for any input.
Ian

fl-mike 01-18-2018 08:00 AM

The infamous "ski-jump".
Vans has a tool you can borrow to fix this. Works well.

N329JR 01-18-2018 08:32 AM

I see that "Ski Jump" is the key search phrase for this issue.
Thanks.

fl-mike 01-18-2018 08:58 PM

here's the Van's tool and a before and after. Use scraps of aluminum to protect the skin (like in the second picture), rear spar rivets, and spar flange or you'll gouge them when you do the bend.





before and after:

wjb 01-18-2018 09:23 PM

I borrowed one from Mike Cencula here on VAF -- it worked great!

See below for photos:

http://www.mykitlog.com/users/displa...g=218568&row=9

http://www.mykitlog.com/users/displa...g=242664&row=2


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