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Wing Skin Advice Needed

 
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Yellowhammer



Joined: 21 Mar 2018
Posts: 81
Location: Franklinton, Louisiana

PostPosted: Mon Jan 06, 2020 12:37 pm    Post subject: Wing Skin Advice Needed Reply with quote

Gentleman,

As I was skinning the inboard section of my starboard wing last week, I failed to notice where the skins contact ribs 4 and 5 on the bottom side did not bond properly.

I realized where my error was and did not have any problems with the remaining leading edge skins.. I have the wooden skins.

I am seeking advice on the best method to get the skin to bond to these rib sections??
My original thought is to drill two holes over the voids and squeeze in the micro. After completing that,I will tape them down properly for a good contact and curing.

Any thoughts, words of wisdom, or guidance will, as always be valued tremendously.

Happy New Year to all of you,

Sincerely and Respectfully,

Clyde


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PostPosted: Mon Jan 06, 2020 1:05 pm    Post subject: Wing Skin Advice Needed Reply with quote

Clyde,
How large are the areas where it is not bonded?The problem with such a "repair" is that the surfaces would have to be sanded before it could get a good bond, and if it is not accessible, that is not possible. What you suggested would maybe fill the void, but not bond properly.
The only way to fix it correctly would be to cut out the skin in the problem area and scarf in a new piece. 
But:  if the area is small, I would just leave it alone (only for ribs, not for spar), or just fill the voids.
Sonja
On Mon, Jan 6, 2020 at 12:40 PM Yellowhammer <coyler(at)sthpk-12.net (coyler(at)sthpk-12.net)> wrote:

Quote:
--> Pulsar-List message posted by: "Yellowhammer" <coyler(at)sthpk-12.net (coyler(at)sthpk-12.net)>

Gentleman,

As I was skinning the inboard section of my starboard wing last week, I failed to notice where the skins contact ribs 4 and 5 on the bottom side did not bond properly.

I realized where my error was and did not have any problems with the remaining leading edge skins.. I have the wooden skins.

I am seeking advice on the best method to get the skin to bond to these rib sections??


My original thought is to drill two holes  over the voids and squeeze in the micro. After completing that,I will tape them down properly for a good contact and curing.

Any thoughts, words of wisdom, or guidance will, as always be valued tremendously.

Happy New Year to all of you,

Sincerely and Respectfully,

Clyde

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J.M. Oyler &quot;Clyde&quot;




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Yellowhammer



Joined: 21 Mar 2018
Posts: 81
Location: Franklinton, Louisiana

PostPosted: Thu Jan 09, 2020 9:12 am    Post subject: Re: Wing Skin Advice Needed Reply with quote

Sonja,

On leading edge rib number 3, there is approximately 3 to 4 inches on the bottom side that did not bond. On leading edge rib number 4 there is approximately 2 to 3 inches on bottom that did not adhere properly.

Hope this help. Thank you for your wisdom!

Sincerely and Respectfully,'

Clyde


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PostPosted: Thu Jan 09, 2020 1:57 pm    Post subject: Wing Skin Advice Needed Reply with quote

I would not worry about it and just leave it as is.

Sonja
On Thu, Jan 9, 2020 at 9:15 AM Yellowhammer <coyler(at)sthpk-12.net (coyler(at)sthpk-12.net)> wrote:

Quote:
--> Pulsar-List message posted by: "Yellowhammer" <coyler(at)sthpk-12.net (coyler(at)sthpk-12.net)>

Sonja,

On  leading edge rib number 3, there is approximately 3 to 4 inches on the bottom side that did not bond. On leading edge rib number 4 there is approximately 2 to 3 inches on bottom that did not adhere properly.

Hope this help. Thank you for your wisdom!

Sincerely and Respectfully,'

Clyde

--------
J.M. Oyler &quot;Clyde&quot;




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=494208#494208






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gregsmi



Joined: 01 Jan 2011
Posts: 232
Location: Topeka, KS

PostPosted: Thu Jan 09, 2020 4:26 pm    Post subject: Wing Skin Advice Needed Reply with quote

Sonya, the high load area of the wing is inboard. What part of that load is placed on the leading edge? Also, since is is not formed to the rib, what impact will that have?


Greg







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Yellowhammer



Joined: 21 Mar 2018
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Location: Franklinton, Louisiana

PostPosted: Thu Jan 09, 2020 8:33 pm    Post subject: Re: Wing Skin Advice Needed Reply with quote

Sonja,

Thanks for the input. I will upload a picture just to be on the safe side. That way you and Mr. Greg can see the exact location.

Thanks so much!

Clyde


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Yellowhammer



Joined: 21 Mar 2018
Posts: 81
Location: Franklinton, Louisiana

PostPosted: Thu Jan 09, 2020 8:34 pm    Post subject: Re: Wing Skin Advice Needed Reply with quote

Sonja,

Thanks for the input. I will upload a picture just to be on the safe side. That way you and Mr. Greg can see the exact location.

Thanks so much!

Clyde


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