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Top Wing Skin and Wing Walk Doublers

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mverrill(at)earthlink.net
Guest

Posted: Sat Sep 15, 2007 11:43 am Post subject: Top Wing Skin and Wing Walk Doublers

Hi folks, just looking for verification from someone who has been past this part before.  Pg. 16-2 calls for several# 19 holes to be drilled, then countersunk.  This is a first for me to countersink a hole this large in other than solid aluminum, like .060 plus.  In this case, the top layer is the .025 top layer of skin, the walk doublers at .020 and the rib at ~ .025.  This seems to leave some terrbly thin edges around this countersink.   Based upon the other steps, it appears this wiill have another layer of dimpled material then a screw...which may make this less daunting, but without the manual section on fairning for the wing roots, I really don't know exactly what will attach here and how.  I set up an example with some scraps of the same thickness and it appears that with another dimpled layer inside this countersink that this will be solid dispite the thin bevel.  Someone reassure me please that I am reading this correctly   (specifically step 3 on pg. 16-2)

  

 Thanks,

 Mark Verrill ~ SB wings

  

  

 mark verrill

 mverrill(at)earthlink.net (mverrill(at)earthlink.net)

 EarthLink Revolves Around You.

  

 

  [quote][b]

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rv10builder(at)verizon.ne
Guest

Posted: Sat Sep 15, 2007 12:17 pm Post subject: Top Wing Skin and Wing Walk Doublers

no idea about the answer but I'll throw a Wing Gotcha from  Tim's site out there for you since your on this page.

  

This clip comes from: http://www.myrv10.com/N104CD/wing/20040906/index.html

On page 16-2, the aft wing-walk doubler has a nutplate holes to drill.  Read  ahead for the nutplate riveting and you will see that the forward most hole in  the aft wing-walk doubler is correct per plans.  I accidently drilled mine  for a standard center-threaded nutplate, whereas this gets the nutplate with the  threads on the end, with 2 rivets side by side. 

  

Pascal

 [quote]   ---

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carl.froehlich(at)cox.net
Guest

Posted: Sat Sep 15, 2007 12:17 pm Post subject: Top Wing Skin and Wing Walk Doublers

You are reading it correctly.  On the top skin only all but one of the inboard holes for #8 screws are countersunk, not dimpled.  The aft most #8 screw hole is dimpled as it is beyond the area where here is a wing walk doubler.  The countersunk hole is bigger (wider) than it would be in a thicker material but you will have the wing fairing in this hole under the screw head.  Note that only the hole for the #8 screw is countersunk.  The nut plate rivet holes on the skin are dimpled and all 3/32 holes are countersunk on the doubler.  For this area the ribs are not dimpled.  

   

I just finished doing this on my left wing.  Looking back however I might just dimple the doubler and all #8 screw holes on the right wing.  This was the process when I built my 8A.  

   

Carl Froehlich  

Dogwood Airpark (VA-42)  

         

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of mark verrill

 Sent: Saturday, September 15, 2007 3:40 PM

 To: RV10-List(at)matronics.com

 Subject: Top Wing Skin and Wing Walk Doublers  

  

     

Hi folks, just looking for verification from someone who has been past this part before.  Pg. 16-2 calls for several# 19 holes to be drilled, then countersunk.  This is a first for me to countersink a hole this large in other than solid aluminum, like .060 plus.  In this case, the top layer is the .025 top layer of skin, the walk doublers at .020 and the rib at ~ .025.  This seems to leave some terrbly thin edges around this countersink.   Based upon the other steps, it appears this wiill have another layer of dimpled material then a screw...which may make this less daunting, but without the manual section on fairning for the wing roots, I really don't know exactly what will attach here and how.  I set up an example with some scraps of the same thickness and it appears that with another dimpled layer inside this countersink that this will be solid dispite the thin bevel.  Someone reassure me please that I am reading this correctly (specifically step 3 on pg. 16-2)  

    

   

    

Thanks,  

    

Mark Verrill ~ SB wings  

    

   

    

   

    

mark verrill  

    

mverrill(at)earthlink.net (mverrill(at)earthlink.net)  

    

EarthLink Revolves Around You.  

    

   

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        [quote][b]

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Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sat Sep 15, 2007 6:21 pm Post subject: Top Wing Skin and Wing Walk Doublers

Yep, that's a big "gotcha" section, so proceed carefully when doing

those nutplates and countersinks so you do it just the way it's

intended.  The countersunk holes are just for fastening the wing

root fairings later.



Tim Olson - RV-10 N104CD - Flying



pascal wrote:

[quote] no idea about the answer but I'll throw a Wing Gotcha from Tim's site 

 out there for you since your on this page.

 

 *This clip comes from: 

 **http://www.myrv10.com/N104CD/wing/20040906/index.html*

 On page 16-2 

 <http://www.myrv10.com/N104CD/wing/20040906/careful16-2.jpg>, the aft 

 wing-walk doubler has a nutplate holes to drill.  Read ahead for the 

 nutplate riveting and you will see that the forward most hole in the aft 

 wing-walk doubler is correct per plans.  I accidently drilled mine for a 

 standard center-threaded nutplate, whereas this gets the nutplate with 

 the threads on the end, with 2 rivets side by side.

 

  

 

 Pascal

 

     ---

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