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Top VS Rib Won't Fit

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Jeff Rosson

Joined: 29 May 2007
Posts: 9

Posted: Mon Jun 11, 2007 4:55 am Post subject: Top VS Rib Won't Fit

Hi,



I originally posted this question to the Van's Air Force site, but I didn't have the ability to send in pictures and I just found out I can't post attachements there, so I am bringing the question here.



Here are two pictures to describe my problem with the top rib for the VS fitting into the skin.  In one picture, the rib is clecoed to the aft spar and, as you can see, the rib is too long and too wide at the tip to slip into the VS skin.  In the video that Van's has for the RV9 empennage, this rib fits inside with no problem.  



In the other picture, I have forced the rib inside the skin, and clecoed it in all the way back to the aft spar, including the forward spar, except for the holes in the tab.  As shown, the tab had to be bent quite a bit to fit inside, to where the hole in the skin is no where close to the mating with hole on the tab.  



To make it fit, it looks like I would have to flatten out the flanges of the tab, then cut back on the tip to reduce the length, then trim the flanges and re-bend them to make the tab narrower.



I don't really see any structural problem to me doing that, but with the way the rest of the parts have been fitting together so nicely, the fact I am having this kind of problem here (and, again, the video shows the rib fitting in quite nicely) makes me question it.



Hope the pictures help.  (And I hope I remembered to attach them!)



Thanks,

Jeff

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VS RIB 2.jpg

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VS RIB 1.jpg

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smittysrv

Joined: 10 Jan 2006
Posts: 67

Posted: Mon Jun 11, 2007 6:12 am Post subject: Re: Top VS Rib Won't Fit

Hi Jeff,



You shouldn't be having the problem you're having. Mine went in easily. I think you have a mal-formed rib. I suggest you order another one from Van's.

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_________________
Smittys RV-9A
SmittysRV.com

aurbo(at)ak.net
Guest

Posted: Mon Jun 11, 2007 6:18 am Post subject: Top VS Rib Won't Fit

Jeff,



First don't start hacking away until your sure. You can make an expensive 

mistake real quick.



 	  Quote: 	
		  From the looks of the one picture is does look like something is definitely 

wrong. It looks like (at least from my perspective) that you need to do some 
	


fluting and some trimming on that rib to make it fit.



Make certain that you have the right parts in the right places.



Is the video you got from Van's the one by George Orndorf? George has some 

great ideas.



www.rvproject.com/ , This is a good resource site and there are others.



Blue Skies,



Mike Ice



---

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aurbo(at)ak.net
Guest

Posted: Mon Jun 11, 2007 6:45 am Post subject: Top VS Rib Won't Fit

Jeff,



I just read your post on the VAF.



I would also suggest to you that if your having problems with clecoing to 

get a pneumatic cleco tool.



Also, QUICK Build is a great way to go with the wings and fuselage.



Mike Ice



---

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dthomas773(at)sbcglobal.n
Guest

Posted: Mon Jun 11, 2007 7:14 am Post subject: Top VS Rib Won't Fit

You might try removing the skin from the skeleton,

Cleco the rib in place and see if it fit then.

--- "Michael T. Ice" <aurbo(at)ak.net> wrote:



[quote] 

 <aurbo(at)ak.net>

 

 Jeff,

 

 I just read your post on the VAF.

 

 I would also suggest to you that if your having

 problems with clecoing to 

 get a pneumatic cleco tool.

 

 Also, QUICK Build is a great way to go with the

 wings and fuselage.

 

 Mike Ice

 

 ---

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wowens(at)darientel.net
Guest

Posted: Mon Jun 11, 2007 10:23 am Post subject: Top VS Rib Won't Fit

Peeling the blue afterbirth off may help  some

Wayne

---

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Bob Perkinson

Joined: 10 Jan 2006
Posts: 51
Location: Hendersonville, Tennessee

Posted: Tue Jun 19, 2007 12:36 pm Post subject: Top VS Rib Won't Fit

Jeff



 	  Quote: 	
		  From the photos it looks like you have not fluted the rib.  Get a flexible

metal ruler and eyeball the pre-punched holes.  You might find that the line
	


of holes is not in a straight line but produce a slightly curved line.

Fluting the flange will draw the holes into a straight line and reduce the

overall length of the rib slightly.



Bob Perkinson

Hendersonville, TN.

RV9 N658RP Reserved

If nothing changes

Nothing changes



In the other picture, I have forced the rib inside the skin, and clecoed it

in all the way back to the aft spar, including the forward spar, except for

the holes in the tab.  As shown, the tab had to be bent quite a bit to fit

inside, to where the hole in the skin is no where close to the mating with

hole on the tab.



To make it fit, it looks like I would have to flatten out the flanges of the

tab, then cut back on the tip to reduce the length, then trim the flanges

and re-bend them to make the tab narrower.

http://forums.matronics.com/viewtopic.php?p=117768#117768





Attachments:



http://forums.matronics.com//files/vs_rib_2_357.jpg

http://forums.matronics.com//files/vs_rib_1_911.jpg

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