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wing bolt torques

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mlord001(at)new.rr.com
Guest

Posted: Mon May 25, 2009 7:40 am Post subject: wing bolt torques

What torque are you setting your AN 5 wing nuts  at.

 The Torque tables on the net say 60 to 85 ft lbs  for shear nuts

 and 100 to 140 ft lbs for tension nuts.   I was putting the final torque

 on them yesterday and they are at 40 ft lbs now and  seem very

 tight.  Are we in shear or tension? I thought  i would check rather than

  screw up at this stage of the  game.

 Thanks 

 Mike Lord

 601 XL        N526M

 Checking things out before final airwothiness  check.

   [quote][b]

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psm(at)att.net
Guest

Posted: Mon May 25, 2009 9:01 am Post subject: wing bolt torques

HI Mike,



 I think you have confused foot-pounds with inch-pounds.  That would make a 12 to 1 difference.  I think the proper torque for AN-5 bolts is around 100 to 140 inch-pounds.



 Paul

 XL grounded



 

 At 08:25 AM 5/25/2009, you wrote:



 [quote]What torque are you setting your AN 5 wing nuts at.

 The Torque tables on the net say 60 to 85 ft lbs for shear nuts

 and 100 to 140 ft lbs for tension nuts.  I was putting the final torque

 on them yesterday and they are at 40 ft lbs now and seem very

 tight.  Are we in shear or tension? I thought i would check rather than

  screw up at this stage of the game.

 Thanks 

 Mike Lord

 601 XL       N526M[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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bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Tue May 26, 2009 9:47 am Post subject: wing bolt torques

Sheer nuts are a special kind of nut. The nuts used to hold the wings  

on should be standard tension nuts. use the table for tension. The  

tables in AC43-13 list the proper torque in inch pounds not foot  

pounds. 40 foot pounds = 480 inch pounds. The proper torque should be  

100 to 140 inch pounds, If you have 40 foot pounds on them, it might  

be a good idea to remove your bolts and nuts and throw them away and  

replace them with new ones, I'm not sure what the yield strength is  

for AN-5 bolts but if you have damaged them, you don't want to rely on  

them.



On May 25, 2009, at 11:25 AM, michael lord wrote:



 	  Quote: 	
		   What torque are you setting your AN 5 wing nuts at.

 The Torque tables on the net say 60 to 85 ft lbs for shear nuts

 and 100 to 140 ft lbs for tension nuts.  I was putting the final  

 torque

 on them yesterday and they are at 40 ft lbs now and seem very

 tight.  Are we in shear or tension? I thought i would check rather  

 than

  screw up at this stage of the game.

 Thanks

 Mike Lord

 601 XL       N526M

 Checking things out before final airwothiness check.




	




-- 

Bryan Martin

N61BM, CH 601 XL,

RAM Subaru, Stratus redrive.

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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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_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

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