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Spars / repairs

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occom(at)ns.sympatico.ca
Guest

Posted: Thu Jun 01, 2006 1:07 pm Post subject: Spars / repairs

I've just agreed to buy a Mod IV. It must be an earlier one as the uphostery 

says Denney under the logo. It's very nicely done but is damaged. The rear 

spar is broken and repaired with a sleeve over the tube just outboard of the 

rear strut attachment. I don't have the plane or books yet and I guess I 

have some reading ahead but I'm doubtful about such a repair. Is this type 

of thing done?



The Sportplane LLC site says they have spars if that is the way to go.

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lcfitt(at)sbcglobal.net
Guest

Posted: Thu Jun 01, 2006 2:42 pm Post subject: Spars / repairs

Dave,  I personally am not comfortable with a spar repair.  I guess if it 

was engineered - OK, but one of the bragging rights we have as Kitfox pilots 

and owners is the history of structural integrity.  Trying to invision the 

spar replacement -  it won't be a small task though.  Where are you located.



Lowell



---

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dave(at)cfisher.com
Guest

Posted: Thu Jun 01, 2006 2:55 pm Post subject: Spars / repairs

Hi Dave,



Spar  Damage is a major problem.

Only fix is a new spar and I would bet you will be needing an entire wing. 

To  remove ribs all intact will be highly unlikely and very labour 

intensive, plus what else is damaged ?  If the spar got that damaged then 

surely  it is likely that more could be found.   Where is this Kitfox 

located now ?



I see by your email you are in Nova Scotia.  I am in Ontario.

Dave



---

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occom(at)ns.sympatico.ca
Guest

Posted: Thu Jun 01, 2006 3:37 pm Post subject: Spars / repairs

The aircraft is about 85 KM away in Brookfield N.S. I can get it home in a 

couple of hours. The damage was not caused in motion, I am told it was 

flipped in wind. It all looks very good with the exception of the wings 

needing new covering, several ribs have been replaced I'll get some pictures 

when I get it home.

---

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smokey_bear_40220(at)yaho
Guest

Posted: Thu Jun 01, 2006 9:30 pm Post subject: Spars / repairs

Hi Dave,



I agree, replace the spar or the entire wing.



Why was the spar busted?  Could it have been from

something that hurt other parts too?



If the wing had a chance to flex when the spar was

broke, the ribs may be weakened by rotation or the

epoxy come unattached from the spar.



This is not worth the risk to find out in flight.



Kurt S.



--- "Dave G." <occom(at)ns.sympatico.ca> wrote:



 	  Quote: 	
		   I've just agreed to buy a Mod IV. It must be an

 earlier one as the uphostery 

 says Denney under the logo. It's very nicely done

 but is damaged. The rear 

 spar is broken and repaired with a sleeve over the

 tube just outboard of the 

 rear strut attachment. I don't have the plane or

 books yet and I guess I 

 have some reading ahead but I'm doubtful about such

 a repair. Is this type of thing done?

 

 The Sportplane LLC site says they have spars if that

 is the way to go.


	


__________________________________________________

- The Matronics Kitfox-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:

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occom(at)ns.sympatico.ca
Guest

Posted: Fri Jun 02, 2006 1:57 am Post subject: Spars / repairs

Thanks Kurt. I just got a reply from the new Kitfox and spars are reasonably 

priced. I'll be replacing it. I'll post pictures when I actually get it 

home. That is tomorrow, course it's going to rain.

---

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lcfitt(at)sbcglobal.net
Guest

Posted: Fri Jun 02, 2006 10:55 am Post subject: Spars / repairs

Dave,



Lots of folks have disassembled wings for various reasons, it is doable.  I 

am sure when you get to that point there will be lots of tips from the list. 

The new spar is the way to go.  After stripping the fabric you will get a 

good look at ribs, etc and can make a judgement as to what can be re-used.



Lowell

---

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kitfox(at)ida.net
Guest

Posted: Fri Jun 02, 2006 10:48 pm Post subject: Spars / repairs

If it was me. I would allways wonder what else was damaged. The correct and

safe mode. Replace the wings. Just an idea.

Those kind of stresses and damage have not been evaluated. The real story is

you have no idea about the condition of the rest of the pieces of the wing.

It has not been tested or proven.What about the rest of the plane? Lot of

stress to wipe out a wing. We all hear about wing stress loading and failure

point. What we do not continue to read is the damage on the rest of the

structure to get it to that point.

Albert

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