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[Bulk] Unfortunate Mistake

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khorton01(at)rogers.com
Guest

Posted: Sun Sep 17, 2006 2:52 am Post subject: [Bulk] Unfortunate Mistake

On 16 Sep 2006, at 22:46, dmaib(at)mac.com (dmaib(at)mac.com) wrote:



 	  Quote: 	
		  I had an accident this afternoon when on of my RV-10 Quick Build wings slipped off the cradle. The inboard leading edge was dented and the inboard fuel tank panel was slightly deformed. I am looking for advice on how to gracefully recover from this (completely preventable) mistake. 	


I don't think you should try to salvage that tank.  If you leave it as is, the stress on the tank inner rib and the wing skin may eventually lead to a fuel tank leak.  And, the incorrect profile on the inboard wing leading edge could affect stall characteristics and stall speed.  I don't see any way to do a repair short of rebuilding the whole tank.



I think you should order parts and plan to build a new tank.  The RV Yeller Pages list several companies that will build RV fuel tanks, if you don't want to do that job yourself:





 Kevin Horton         RV-8 (finishing kit)

Ottawa, Canada

http://www.kilohotel.com/rv8

 



 [quote][b]

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rocketbob(at)gmail.com
Guest

Posted: Sun Sep 17, 2006 6:39 am Post subject: [Bulk] Unfortunate Mistake

I've seen RV's with dents from bird strikes that weren't affected at all in flight by dents far bigger than that one, so I respectfully disagree with Kevin.  I would make a form block out of wood and try to work the dent out as best as you can from the inboard side.  If that doesn't work I'd remove the rib try to work it out that way, and make a custom rib or cover plate in the rib.  If you're careful about how you remove the dent you will never notice it with paint on the airplane. 



I have a friend with an RV-8 that had a severe dent in the leading edge right on a rib, just outboard of the fuel tank.  Much worse than this one.  It was creased right along the rib.  He had an old-timer metal man work the dent out, it took him all of 30 minutes to accomplish.  I was there and watched him do it, he made a form block out of wood and gently pried it back into shape with a small bottle jack and some blocks of wood inside the wing against the spar (long story short).  You cannot tell there was a dent, and there was no body filler used.  It was a very creative fix! 



Regards,

Bob Japundza

RV-6 flying, F1 under const.



On 9/17/06, Kevin Horton <khorton01(at)rogers.com  (khorton01(at)rogers.com)> wrote:[quote]

On 16 Sep 2006, at 22:46,  dmaib(at)mac.com (dmaib(at)mac.com) wrote:

 	  Quote: 	
		   I had an accident this afternoon when on of my RV-10 Quick Build wings slipped off the cradle. The inboard leading edge was dented and the inboard fuel tank panel was slightly deformed. I am looking for advice on how to gracefully recover from this (completely preventable) mistake. 	


I don't think you should try to salvage that tank.  If you leave it as is, the stress on the tank inner rib and the wing skin may eventually lead to a fuel tank leak.  And, the incorrect profile on the inboard wing leading edge could affect stall characteristics and stall speed.  I don't see any way to do a repair short of rebuilding the whole tank. 

I think you should order parts and plan to build a new tank.  The RV Yeller Pages list several companies that will build RV fuel tanks, if you don't want to do that job yourself:

 

 Kevin Horton         RV-8 (finishing kit)

Ottawa, Canada

 http://www.kilohotel.com/rv8

 

 [quote][b]  http://www.matronics.com/Navigator?RV-List http://forums.matronics.com http://wiki.matronics.com 

[b]

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khorton01(at)rogers.com
Guest

Posted: Sun Sep 17, 2006 7:44 am Post subject: [Bulk] Unfortunate Mistake

Bob - Did the guys with the bird strike dents do a full set of stall characteristics and stall speed tests before fixing the dents?

David - Where are the inspection covers in the RV-10 tanks?  In the rear baffle?  It might be possible to remove the root rib, but you'll need access inside the tank to scrape the proseal off or you'll never be able to extract the rib.  You'll also need access so you can put some proseal along the rib/skin junction after riveting the rib back in place.

I'm not familiar with the RV-10.  How is that tank/fuselage attachment fitting attached to the root rib?  Can it be riveted to the rib before riveting the rib back in place?



Kevin Horton



On 17 Sep 2006, at 10:38, Bob J. wrote:

 	  Quote: 	
		  I've seen RV's with dents from bird strikes that weren't affected at all in flight by dents far bigger than that one, so I respectfully disagree with Kevin.  I would make a form block out of wood and try to work the dent out as best as you can from the inboard side.  If that doesn't work I'd remove the rib try to work it out that way, and make a custom rib or cover plate in the rib.  If you're careful about how you remove the dent you will never notice it with paint on the airplane. 



I have a friend with an RV-8 that had a severe dent in the leading edge right on a rib, just outboard of the fuel tank.  Much worse than this one.  It was creased right along the rib.  He had an old-timer metal man work the dent out, it took him all of 30 minutes to accomplish.  I was there and watched him do it, he made a form block out of wood and gently pried it back into shape with a small bottle jack and some blocks of wood inside the wing against the spar (long story short).  You cannot tell there was a dent, and there was no body filler used.  It was a very creative fix! 



Regards,

Bob Japundza

RV-6 flying, F1 under const.



On 9/17/06, Kevin Horton <khorton01(at)rogers.com  (khorton01(at)rogers.com)> wrote: 	  Quote: 	
		  

On 16 Sep 2006, at 22:46, dmaib(at)mac.com (dmaib(at)mac.com) wrote:

 	  Quote: 	
		   I had an accident this afternoon when on of my RV-10 Quick Build wings slipped off the cradle. The inboard leading edge was dented and the inboard fuel tank panel was slightly deformed. I am looking for advice on how to gracefully recover from this (completely preventable) mistake. 	


I don't think you should try to salvage that tank.  If you leave it as is, the stress on the tank inner rib and the wing skin may eventually lead to a fuel tank leak.  And, the incorrect profile on the inboard wing leading edge could affect stall characteristics and stall speed.  I don't see any way to do a repair short of rebuilding the whole tank. 

I think you should order parts and plan to build a new tank.  The RV Yeller Pages list several companies that will build RV fuel tanks, if you don't want to do that job yourself:

 

 Kevin Horton         RV-8 (finishing kit)

Ottawa, Canada

 http://www.kilohotel.com/rv8

 



	


	




 



 [quote][b]

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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steve(at)newtech.com
Guest

Posted: Sun Sep 17, 2006 8:05 am Post subject: [Bulk] Unfortunate Mistake

Find you a body man that is at least 60 years old.  He will be able to 

hammer that out to the point you won't be able to tell were the damage 

was.  It takes a good feel for what the metal is telling him and a good 

eye.  The younger bondo slingers just don't have the touch.



Steve Eberhart

60 year old RV-7A builder



Bob J. wrote:



 	  Quote: 	
		   I've seen RV's with dents from bird strikes that weren't affected at 

 all in flight by dents far bigger than that one, so I respectfully 

 disagree with Kevin.  I would make a form block out of wood and try to 

 work the dent out as best as you can from the inboard side.  If that 

 doesn't work I'd remove the rib try to work it out that way, and make 

 a custom rib or cover plate in the rib.  If you're careful about how 

 you remove the dent you will never notice it with paint on the airplane.



 I have a friend with an RV-8 that had a severe dent in the leading 

 edge right on a rib, just outboard of the fuel tank.  Much worse than 

 this one.  It was creased right along the rib.  He had an old-timer 

 metal man work the dent out, it took him all of 30 minutes to 

 accomplish.  I was there and watched him do it, he made a form block 

 out of wood and gently pried it back into shape with a small bottle 

 jack and some blocks of wood inside the wing against the spar (long 

 story short).  You cannot tell there was a dent, and there was no body 

 filler used.  It was a very creative fix!



 Regards,

 Bob Japundza

 RV-6 flying, F1 under const.

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

dmaib@me.com

Joined: 25 Apr 2006
Posts: 455
Location: New Smyrna Beach, Florida

Posted: Mon Sep 18, 2006 5:57 am Post subject: [Bulk] Unfortunate Mistake

Thanks to all for the help, suggestions, and advice. It now appears  

that this won't be as big a job to repair as I initially feared. I  

can't imagine building without these forums for information. BTW, my  

wings are now properly secured to the cradle! ^_^



David Maib

RV-10 40559

tailcone (and right wing)



On Sep 17, 2006, at 11:03 AM, Steve Eberhart wrote:






Find you a body man that is at least 60 years old.  He will be able  

to hammer that out to the point you won't be able to tell were the  

damage was.  It takes a good feel for what the metal is telling him  

and a good eye.  The younger bondo slingers just don't have the touch.



Steve Eberhart

60 year old RV-7A builder



Bob J. wrote:



 	  Quote: 	
		   I've seen RV's with dents from bird strikes that weren't affected  

 at all in flight by dents far bigger than that one, so I  

 respectfully disagree with Kevin.  I would make a form block out of  

 wood and try to work the dent out as best as you can from the  

 inboard side.  If that doesn't work I'd remove the rib try to work  

 it out that way, and make a custom rib or cover plate in the rib.   

 If you're careful about how you remove the dent you will never  

 notice it with paint on the airplane.



 I have a friend with an RV-8 that had a severe dent in the leading  

 edge right on a rib, just outboard of the fuel tank.  Much worse  

 than this one.  It was creased right along the rib.  He had an old- 

 timer metal man work the dent out, it took him all of 30 minutes to  

 accomplish.  I was there and watched him do it, he made a form  

 block out of wood and gently pried it back into shape with a small  

 bottle jack and some blocks of wood inside the wing against the  

 spar (long story short).  You cannot tell there was a dent, and  

 there was no body filler used.  It was a very creative fix!



 Regards,

 Bob Japundza

 RV-6 flying, F1 under const.

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

_________________
David Maib
RV-10 #40559
New Smyrna Beach, FL

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