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Attachment fitting at top of lift struts.
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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Sat Oct 20, 2007 3:57 pm Post subject: Re: Attachment fitting at top of lift struts.

Guy , no chip on my shoulder.  I only speak from what I have seen. Amd I think i go the document that shows the 14 gs and no rod end failure. 

If i can find i will scan and post it. 

That being said I will agree that the rod ends do look tiny comaored to others .   For example I has a look at a N3 Pup ( 3/4 J3 Clone thingy) and it has huge rod ends. I mean like the threads are i think 7/16's on front strut and 3/8s on rear...... Now were they rolled theads and what is thier tensile I have no idea but certainly "bigger physically" than ours. 

What size are used on the new Super Sport John McBean ? 

 



 	  Quote: 	
		  I don't know, Dave. It sounds like you may have a chip on your 

shoulder and that I'd be pretty much wasting my time

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Posted: Sun Oct 21, 2007 7:44 am Post subject: Attachment fitting at top of lift struts.

Does anyone have tensiles of a rod end used ?  \ 

Aircraft Spruce lists the tensile strength of rod end fittings in their catalog. The number 7000# comes to mind on 5/16". What ever the number x 4 divided by gross weight and you get some number.  factor in impact load vs. static load and you get some number....... 

  

A look at all(?) the cessnapipertaylorluscomehuskey types and you will find essentially the same fittings sized for weight/category. 

  

Moving on... 

  

John Kerr

   

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[b]

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Mon Oct 22, 2007 5:37 pm Post subject: Re: Attachment fitting at top of lift struts.

While we on topic of the wing struts G;'s etc ......does anyone know what the speedster ultimate load limits were ?

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