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Dents in HS Skin

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marchudson(at)comcast.net
Guest

Posted: Thu May 04, 2006 3:50 am Post subject: Dents in HS Skin

Was wondering if anyone else had this problem and if there are suggestions on how to fix it?  

   

The nose ribs of the horizontal stab pull the skins in slightly and produce a dent in the skins on the rivet line.  

This is only happening on the top side of the skins not the bottom and only to the nose ribs.    

I have measured the worst looking one and it pulls the skin inward about 1/8 of an inch.  I’m confident that   

this is cosmetic only however it is still upsetting.    

   

Will I be able to fill this in with Superfill before painting?  

   

Has anyone else seen this?  

   

I could e-mail pictures if needed.  

   

Thanks for the help.  

   

Marc Hudson  

marcandkathy.com

effectus(at)rogers.com
Guest

Posted: Thu May 04, 2006 5:25 am Post subject: Dents in HS Skin

Marc,

  

     I had the same problem. Same emotional outburst when I  looked at it from the end. Filler will fix the problem. I haven't run into a  similar situation after I completed that component so the best advise is to not  dwell on it and fix it up at paint.

  

 Dave Hertner

 #40164

 Waiting for QB to arrive.

 [quote]   ---

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Thu May 04, 2006 5:37 am Post subject: Dents in HS Skin

Ditto.



FWIW I looked (at) the 2 Colorado Award winners (at) OSH last year and they 

had the Same thing.



Deems Davis # 406

Fuse

http://deemsrv10.com/

David Hertner wrote:



[quote] Marc,

 I had the same problem. Same emotional outburst when I looked at it 

 from the end. Filler will fix the problem. I haven't run into a 

 similar situation after I completed that component so the best advise 

 is to not dwell on it and fix it up at paint.

 Dave Hertner

 #40164

 Waiting for QB to arrive.



     ---

jeff(at)westcottpress.com
Guest

Posted: Thu May 04, 2006 9:08 am Post subject: Dents in HS Skin

Everyone who didn't trim the edge of the nose rib a bit  (me included) has had this problem.  It's upsetting, but you'll have bigger cosmetic issues along the way.  Think of it as the first little scratch on your new car.  It makes all the scratches that follow a bit easier to take.

You'll find that later in the empennage instruction set they'll have you trim the ribs on another part to avoid just that problem.  It makes you wonder why they don't warn you on the HS.

Jeff Carpenter

40204

N410CF

Fuel Tanks



On May 4, 2006, at 5:46 AM, Marc and Kathy wrote:

 	  Quote: 	
		  

Was wondering if anyone else had this problem and if there are suggestions on how to fix it?

 

The nose ribs of the horizontal stab pull the skins in slightly and produce a dent in the skins on the rivet line.

This is only happening on the top side of the skins not the bottom and only to the nose ribs. 

I have measured the worst looking one and it pulls the skin inward about 1/8 of an inch.  I’m confident that

this is cosmetic only however it is still upsetting. 

 

Will I be able to fill this in with Superfill before painting?

 

Has anyone else seen this?

 

I could e-mail pictures if needed.

 

Thanks for the help.

 

Marc Hudson

marcandkathy.com

jjessen

Joined: 22 Apr 2006
Posts: 285
Location: OR

Posted: Thu May 04, 2006 9:34 am Post subject: Dents in HS Skin

Take a look here for a brief discussion.   

  

 http://www.soundingsresearch.com/RV-10/Problems/Problems_03.htm

  

 John Jessen

   328 Tailcone



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

Sent: Thursday, May 04, 2006 10:06 AM

To:  rv10-list(at)matronics.com

Subject: Re: Dents in HS  Skin

 

Everyone who didn't trim the edge of the nose rib a bit  (me  included) has had this problem.  It's upsetting, but you'll have bigger  cosmetic issues along the way.  Think of it as the first little scratch on  your new car.  It makes all the scratches that follow a bit easier to take. 

 You'll find that later in the empennage instruction set they'll have you  trim the ribs on another part to avoid just that problem.  It makes you  wonder why they don't warn you on the HS. 

 Jeff Carpenter

 40204

 N410CF

 Fuel Tanks 

 

  On May 4, 2006, at 5:46 AM, Marc and Kathy wrote:

  	  Quote: 	
		        

Was wondering if anyone else had    this problem and if there are suggestions on how to fix it?   

   

The nose ribs of the horizontal    stab pull the skins in slightly and produce a dent in the skins on the rivet    line.   

This is only happening on the top    side of the skins not the bottom and only to the nose ribs.    

I have measured the worst looking    one and it pulls the skin inward about 1/8 of an inch.  I’m confident    that   

this is cosmetic only however it    is still upsetting.    

   

Will I be able to fill this in    with Superfill before painting?   

   

Has anyone else seen    this?   

   

I could e-mail pictures if    needed.   

   

Thanks for the help.   

   

Marc Hudson   

marcandkathy.com

indigoonlatigo(at)msn.com
Guest

Posted: Thu May 04, 2006 9:54 am Post subject: Dents in HS Skin

With instructions for kit #409 they said trim the H.S. ribs but not the V.S. 

Even when trimmed there still is an issue.



John G.



No not archive

 	  Quote: 	
		  From: Jeff Carpenter <jeff(at)westcottpress.com>

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

To: rv10-list(at)matronics.com

Subject: Re: Dents in HS Skin

Date: Thu, 4 May 2006 10:06:03 -0700



Everyone who didn't trim the edge of the nose rib a bit  (me  included) has 

had this problem.  It's upsetting, but you'll have  bigger cosmetic issues 

along the way.  Think of it as the first  little scratch on your new car.  

It makes all the scratches that  follow a bit easier to take.



You'll find that later in the empennage instruction set they'll have  you 

trim the ribs on another part to avoid just that problem.  It  makes you 

wonder why they don't warn you on the HS.



Jeff Carpenter

40204

N410CF

Fuel Tanks

On May 4, 2006, at 5:46 AM, Marc and Kathy wrote:



>Was wondering if anyone else had this problem and if there are  

>suggestions on how to fix it?

>

>The nose ribs of the horizontal stab pull the skins in slightly and  

>produce a dent in the skins on the rivet line.

>

>This is only happening on the top side of the skins not the bottom  and 

>only to the nose ribs.

>

>I have measured the worst looking one and it pulls the skin inward  about 

>1/8 of an inch.  I’m confident that

>

>this is cosmetic only however it is still upsetting.

>

>Will I be able to fill this in with Superfill before painting?

>

>Has anyone else seen this?

>

>I could e-mail pictures if needed.

>

>Thanks for the help.

>

>Marc Hudson

>

>marcandkathy.com

>

>

jeff(at)westcottpress.com
Guest

Posted: Thu May 04, 2006 10:44 am Post subject: Dents in HS Skin

I stand corrected John... I had the problem on the VS (no warning)  

and not the HS (warning).  These memories are getting a bit old.



Jeff Carpenter

40304

On May 4, 2006, at 10:53 AM, John Gonzalez wrote:



 	  Quote: 	
		   

 <indigoonlatigo(at)msn.com>



 With instructions for kit #409 they said trim the H.S. ribs but not  

 the V.S. Even when trimmed there still is an issue.



 John G.



 No not archive

> From: Jeff Carpenter <jeff(at)westcottpress.com>

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

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

> Subject: Re: Dents in HS Skin

> Date: Thu, 4 May 2006 10:06:03 -0700

>

> Everyone who didn't trim the edge of the nose rib a bit  (me   

> included) has had this problem.  It's upsetting, but you'll have   

> bigger cosmetic issues along the way.  Think of it as the first   

> little scratch on your new car.  It makes all the scratches that   

> follow a bit easier to take.

>

> You'll find that later in the empennage instruction set they'll  

> have  you trim the ribs on another part to avoid just that  

> problem.  It  makes you wonder why they don't warn you on the HS.

>

> Jeff Carpenter

> 40204

> N410CF

> Fuel Tanks

> On May 4, 2006, at 5:46 AM, Marc and Kathy wrote:

>

>> Was wondering if anyone else had this problem and if there are   

>> suggestions on how to fix it?

>>

>>

>>

>> The nose ribs of the horizontal stab pull the skins in slightly  

>> and  produce a dent in the skins on the rivet line.

>>

>> This is only happening on the top side of the skins not the  

>> bottom  and only to the nose ribs.

>>

>> I have measured the worst looking one and it pulls the skin  

>> inward  about 1/8 of an inch.  I’m confident that

>>

>> this is cosmetic only however it is still upsetting.

>>

>>

>>

>> Will I be able to fill this in with Superfill before painting?

>>

>>

>>

>> Has anyone else seen this?

>>

>>

>>

>> I could e-mail pictures if needed.

>>

>>

>>

>> Thanks for the help.

>>

>>

>>

>> Marc Hudson

>>

>> marcandkathy.com

>>

>>

>>

>>

>



 www.matronics.com/Navigator?RV10-List

 wiki.matronics.com

marchudson(at)comcast.net
Guest

Posted: Thu May 04, 2006 3:07 pm Post subject: Dents in HS Skin

Guess I didn't make myself clear enough in the first post.  It

wasn't caused by not trimming the nose of the rib but rather

it is pulling the skin down on the top of the HS almost like the 

rib was not tall enough.



I've attached a picture for all to see.



Thanks for the help.



Marc



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jesse(at)itecusa.org
Guest

Posted: Thu May 04, 2006 4:48 pm Post subject: Dents in HS Skin

That's very normal, I think.  There isn't a crease, is there?  I think it

might be possible to get the bend on the non-ribbed portion of the skin a

little tighter, but I wouldn't mess with it.



Do not archive.



Jesse Saint

I-TEC, Inc.

jesse(at)itecusa.org

www.itecusa.org

352-465-4545

--

Rick S.

Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas

Posted: Fri May 05, 2006 5:35 am Post subject: Dents in HS Skin

Marc,



This is typical of all the RV-10's I have seen, except I have only seen 4. I quit worrying about it after I looked at both of Van's RV-10's. Mine and Bob Kayfmann's here in Las Vegas are just like that. Only thing you want to make sure of is that the flanges on the rib fully contact the skin and that you made sure the flanges were 90 degrees from the web of the rib itself. The other posts addressed the problem of the leading edge of the rib causing the skin to crease at the rib, you don't seem to have that problem. Bright shiney aluminum tends to acentuate any minor deviations from absolute flat. I borrowed a pic from Mike Howe's site where his stab is hanging on the wall and you can easily see the same thing. Drive on!! you got lots more to do!



Rick S.

40185

Fuse/Finish

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_________________
Rick S.
RV-10
40185

indigoonlatigo(at)msn.com
Guest

Posted: Fri May 05, 2006 10:17 pm Post subject: Dents in HS Skin

If you go back and read my original post along with some of the things 

others have said it should make sense why this happens.  Rick's post from 

today is the bottom line.



You might see this again when you make the elevator trim tabs.



Think about this, in the case of the Horizontal stab it is the leading edge 

bend and the nose rib shape.



With the elevator trim parts you bend the aluminum in a bender and if you do 

not make the trailing edge bend tight enough, when you go to glue the foam 

ribs in place you will be squeezing the metal skin in to the ribs more than 

the non rib supported skin wants to be so in the end you might see a 

depression where the ribs are sucking in the skin.



My epoxy worked better by allowing the H.S. skin L.E. bend dictatethe shape 

of the airfoil in conjunction with the ribs and spars.  Any gap between the 

inside skin and the rib flange was filled with epoxy, that is why I 

rechecked the rivet lengths. This even with the rib flanges 90 degrees to 

the web.



Bottom line, it is good you are seeing the issue and thinking about why it 

happens.



John G.

[quote]From: "Marc and Kathy" <marchudson(at)comcast.net>

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

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

Subject: RE: Dents in HS Skin

Date: Thu, 4 May 2006 17:04:16 -0600



Guess I didn't make myself clear enough in the first post.  It

wasn't caused by not trimming the nose of the rib but rather

it is pulling the skin down on the top of the HS almost like the

rib was not tall enough.



I've attached a picture for all to see.



Thanks for the help.



Marc



--

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