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wing tips

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indigoonlatigo(at)msn.com
Guest

Posted: Sun Jan 13, 2008 8:20 pm Post subject: wing tips

I am ready to dimple the wing skins for the #6 screws that will hold the wing tips on. What did people do to place the dimples in the wing skin. It seems that there is not enough space to allow the dimple die to get at the hole in the skin without the side of the die hitting up against the web of the ribs. I even ground down female of my #6 die all the way to the dimple and it still isn't completely lining up with the hole. 

  

 So what have others used to place these dimples in the skin???

  

 Thanks,

  

 JOhn G. 409

  [quote][b]

ddnebert

Joined: 14 Jun 2007
Posts: 17

Posted: Wed Jan 16, 2008 6:55 pm Post subject: Re: wing tips

A technique from a fellow builder - don't use a dimple die! Be sure the holes are cleaned/deburred, and then use the screw to do the dimpling. It will deform it perfectly. I recommend using a steel screw to pilot the dimpling. Try it and see what you think.



Doug Nebert

_________________
RV-10 Builder #40546
Tail mostly done, wings complete, end of SB fuse, working on doors and fiberglass

Lew Gallagher

Joined: 04 Jan 2008
Posts: 402
Location: Greenville , SC

Posted: Thu Jan 17, 2008 4:23 am Post subject: Re: wing tips

Hey Doug,



I assume you mean to screw into the nut plate already in the wingtip fairing as the female die.  Good idea, I'll try it tomorrow and let you know how it does.



Later, - Lew

_________________
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Fly off completed !

dlm46007(at)cox.net
Guest

Posted: Thu Jan 17, 2008 5:25 am Post subject: wing tips

BTDT. The method works in a pinch where the dimple die won't reach  and the

metal is thin enough. However it has the disadvantage of damaging the

aluminum layer of the ALCLAD, exposing the internal metal to corrosion. Much

better to grind the edge from a dimple set to ensure that the dimple is set

to the proper depth without scarring the adjacent metal. Case in point is

the nut plate for the wing fairing on the bottom skin between the main spar

(gear leg in place); use the screw method there. Also use of the screws is

going to strip out a few and potentially leave some in the nut plate for

practice with the misnamed "easy out" tool.



--

rv10(at)sinkrate.com
Guest

Posted: Thu Jan 17, 2008 6:55 am Post subject: wing tips

You can do it with one or two sacrificial nutplates before they are riveted

on and just clecoed in place.  Also if you are worried about scratching the

alclad put a piece of blue tape over it.  Yeah it will take a while but

should work.



-Ben



--

rene(at)felker.com
Guest

Posted: Thu Jan 17, 2008 7:49 am Post subject: wing tips

Also, if you tap the sacrificial nut plate first it makes it a lot easier.



Rene' Felker

N423CF

40322

801-721-6080

--

indigoonlatigo(at)msn.com
Guest

Posted: Thu Jan 17, 2008 10:18 am Post subject: wing tips

Screw it into a nutplate and not the fiberglass that is backed up by the nutplate....right???????

  

 Worried that the fiberglass hole is not clean or strong enough.

  

 JOhn G.



 	  Quote: 	
		   Subject: Re: wing tips

 From: doug(at)mapcontext.com

 Date: Wed, 16 Jan 2008 18:55:21 -0800

 To: rv10-list(at)matronics.com

 

 --> RV10-List message posted by: "ddnebert" <doug(at)mapcontext.com>

 

 A technique from a fellow builder - don't use a dimple die! Be sure the holes are cleaned/deburred, and then use the screw to do the dimpling. It will deform it perfectly. I recommend using a steel screw to pilot the dimpling. Try it and see what you think.

 

 Doug Nebert

 

 --------

 RV-10 Builder #40546

 Tail mostly done, wings complete, starting SB fuse

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=158701#158701

 

 

 

 

 

 

 

===============

 

 

 


	


  [quote][b]

rv10(at)sinkrate.com
Guest

Posted: Thu Jan 17, 2008 4:15 pm Post subject: wing tips

Yes.  Cleco just a COUNTERSUNK nutplate onto the aluminum directly and then screw in the proper screw.  When it contacts the aluminum the screw head makes the dimple.  

   

-Ben  

         

  

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

 Sent: Thursday, January 17, 2008 10:11 AM

 To: rv10-list(at)matronics.com

 Subject: RE: Re: wing tips  

  

   

Screw it into a nutplate and not the fiberglass that is backed up by the nutplate....right???????

  

 Worried that the fiberglass hole is not clean or strong enough.

  

 JOhn G.

 

 > Subject: Re: wing tips

 > From: doug(at)mapcontext.com

 > Date: Wed, 16 Jan 2008 18:55:21 -0800

 > To: rv10-list(at)matronics.com

 > 

 > --> RV10-List message posted by: "ddnebert" <doug(at)mapcontext.com>

 > 

 > A technique from a fellow builder - don't use a dimple die! Be sure the holes are cleaned/deburred, and then use the screw to do the dimpling. It will deform it perfectly. I recommend using a steel screw to pilot the dimpling. Try it and see what you think.

 > 

 > Doug Nebert

 > 

 > --------

 > RV-10 Builder #40546

 > Tail mostly done, wings complete, starting SB fuse

 > 

 > 

 > 

 > 

 > Read this topic online here:

 > 

 > http://forums.matronics.com/viewtopic.php?p=158701#158701

 > 

 > 

 > 

 > 

 > 

 > 

 > 

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 > 

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       [quote][b]

Lew Gallagher

Joined: 04 Jan 2008
Posts: 402
Location: Greenville , SC

Posted: Thu Jan 17, 2008 4:56 pm Post subject: Re: wing tips

Hey Ben,



I may have misunderstood, but I think the original post was about the dimples in the wing skin at the fairing tips -- if that's the case, there's no "clecoing the nutplate onto the aluminum directly" since the nutplate is on the fairing -- no ear holes on the aluminum to cleco to  ... right?  



I've checked ours and I think there's enough room to grind the die down, so I'll try that first.  If not, screwing into a countersunk, tapped out nutplate mounted on scrap aluminum, (using tape or a dimpled washer to protect the skin) should do the trick.  The scrap aluminum/nutplate behind the wing skin would eliminate the risk of cracking the fiberglass mounted nutplates on the actual wingtip with the torque it would take to dimple the thicker wing skin.   And, again, I REALLY like my impact driver for these screw/nutplate jobs.  We'll see how it goes.



Later, - Lew

_________________
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Fly off completed !

rv10(at)sinkrate.com
Guest

Posted: Thu Jan 17, 2008 8:26 pm Post subject: wing tips

Yeah my bad... that is correct.  I obviously didn't think it through all the

way.



-Ben

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