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Errant hole in top skin of Tailcone

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jjessen

Joined: 22 Apr 2006
Posts: 285
Location: OR

Posted: Wed May 03, 2006 12:55 pm Post subject: Errant hole in top skin of Tailcone

I  must not understand how to search the archives correctly or perhaps what words  to use for this one.  I know it was discussed before.   Anyway....

  

 Problem:  I have an extra hole (in my Tailcone top skin, fellas,  sheesh.)  

  

 I  didn't even know I had it until I began peeling off the plastic to get ready to  final deburr my Tailcone front top skin.  Sure enough there are two holes  in the corresponding tab of the rib.  Picture attached.  Van's says to  dimple and rivet and move on, since it's only one mistake in a long row of good  holes.  However, the holes in the skin are so close together that any  dimpling will break through and make it a big hole.  What to do?   

  

 John Jessen

   ~328 (this is my first mistake, of  course)

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recapen(at)earthlink.net
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Posted: Wed May 03, 2006 1:15 pm Post subject: Errant hole in top skin of Tailcone

This looks like a flange rather than skin....you can cut off the flange and replace it with a piece of the same thickness bent to the same angle - on the inside of the rib - it'll be less visible if you're worried about that.  Rivet the replacement tab with a couple of nicely spaced rivets and you'll have a new tab to drill in to ..

  

 Been there, done that - tech inspector liked it too.......



 [quote]--

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Wed May 03, 2006 1:20 pm Post subject: Errant hole in top skin of Tailcone

John, put a doubler of the same (or slightly larger material behind the 

correct hole (make it match the size of the double drilled tab) . match 

drill it and then use a longer rivet when it comes time to rivet. you 

could also consider all of the above and drill for a larger opps rivet.



Deems Davis # 406

Fuse

http://deemsrv10.com/

LIKE2LOOP(at)aol.com
Guest

Posted: Wed May 03, 2006 1:59 pm Post subject: Errant hole in top skin of Tailcone

In a message dated 5/3/2006 4:57:32 PM Eastern Standard Time, jjessen(at)rcn.com writes:

  	  Quote: 	
		  However, the holes in the skin are so close together that any dimpling will break through and make it a big hole.  What to do?  	


  John,

       I did this when i was dimpling the  VS skin, and it moved before i hit the dimpler, and then noticed... ouch!   I flattened out the wrong hole and dimpled the correct hole, and  placed a rivet.  The extra adjacent hole is tiny at one edge of the rivet, and will be filled before i paint.  There are more then enough other rivets to hold it together.  In your case, i would NOT dimple it or the hole gets bigger and you can not fit another rivet in that close to the correct hole. This is not as critical as... say an engine mount bolt hole.

  

 Keep on going.......

  

 Steve

jjessen

Joined: 22 Apr 2006
Posts: 285
Location: OR

Posted: Wed May 03, 2006 2:50 pm Post subject: Errant hole in top skin of Tailcone

Deems, thanks.  I think that the problem I'm staring at is that if I do

anything to either hole in the skin, the tiny amount of metal between the

two holes will break through.  I might try John G's suggestion of a metal

epoxy, which I've never heard about before this.  Van's said that one rivet

will not be missed, so I think as long as the holes are deburred, if I can

even do that, so they don't split, then I might epoxy the skin to the tab at

that point and hope it holds.  



John J  328 



--

jjessen

Joined: 22 Apr 2006
Posts: 285
Location: OR

Posted: Wed May 03, 2006 10:30 pm Post subject: Errant hole in top skin of Tailcone

Ok.  The holes are now no longer two.  They  joined as I thought they would as soon as I tried to deburr the original.   Here's a picture.  Any further  advice?  

  

 John  Jessen

   328  Tailcone.

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VHMUM(at)bigpond.com
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Posted: Wed May 03, 2006 11:04 pm Post subject: Errant hole in top skin of Tailcone

As Vans says 1 hole will not be missed ....stop stressing move on and have  fun....

  

 Chris

  

 RV6 VHMUM Sold

 40388

owl40188(at)yahoo.com
Guest

Posted: Thu May 04, 2006 2:49 am Post subject: Errant hole in top skin of Tailcone

Hey John,

  

 I will get my 2 cents in here.

  

 As per your advice from Vans I don't think its a problem with strength.  I would use one of the oops rivets here just so that the hole gets cleaned out a bit.  Past that you can bond the two pieces if it makes you lfeel better but I wouldn't loose sleep over it.

  

 Niko

 40188 Fuselage floors



---

sfdarton(at)yahoo.com
Guest

Posted: Thu May 04, 2006 7:45 am Post subject: Errant hole in top skin of Tailcone

John,

I would cleco the skin to the underlying part and

re-match drill that one hole only, larger for an oops

rivet. If that hole is elongated I would then dimple

the skin and rib together. Move on and have fun, it's

not a big deal.

Steve 40212



--- John Jessen <jjessen(at)rcn.com> wrote:



 	  Quote: 	
		   Ok.  The holes are now no longer two.  They joined

 as I thought they would

 as soon as I tried to deburr the original.  Here's a

 picture.  Any further

 advice?  

  

 John Jessen

   328 Tailcone.  

 


	




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deej(at)deej.net
Guest

Posted: Thu May 04, 2006 7:54 am Post subject: Errant hole in top skin of Tailcone

John Jessen wrote:

 	  Quote: 	
		   Ok.  The holes are now no longer two.  They joined as I thought they 

 would as soon as I tried to deburr the original.  Here's a 

 picture.  Any further advice? 

  

 John Jessen


	


Hi John,

    I'm not a metal working expert, nor do I play one on TV....  

I think structurally you would be fine to leave it as many have suggested.

If it is a cosmetic thing (as it would be with me), perhaps use some of the

metal epoxy to fill in the hole in the skin, and in the rib, and then

re-drill it through the epoxy after it sets?  I really don't know if 

this will work, and

I'd recommend trying it on some scrap first.  I'm also not sure about 

being able

to dimple it afterwards. 



    I suppose you could cut the head off a flush rivet, and epoxy the

head of the rivet in the hole and then fill in the rest of the hole with the

epoxy.  That should at least take care of the cosmetic part. 

    Or perhaps leave it as-is for now, and after you have riveted all of 

the holes around this one,

you could literally epoxy an entire rivet into the hole and fill around 

it with

the epoxy.  You'd have to make a best effort at dimpling this hole as it 

is now, though.



    Dunno, I'm just thinking out loud here...



-Dj

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