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About those stiffening circles around the lightening holes

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JOHN TIPTON

Joined: 17 Sep 2006
Posts: 239
Location: Torquay - England

Posted: Fri Jul 24, 2009 1:35 pm Post subject: About those stiffening circles around the lightening holes

For the mounting of the 'Gretz' pitot heat controller, I thought of using

 long screws (attach bolts), with alloy 'stand off' tubes which should solve

 the problem you are encountering.



 Check out one or two of the builders web sites there are many options out

 there.



 John

 	  Quote: 	
		  > Ralph Finch wrote:

>> Fellow RVers,

>>

>> I need to mount some stuff on wing ribs.  But, the ribs have holes cut 

>> out

>> for lightening...and around each hole is stamped a modest 

>> raised/indented

>> circle in the sheet metal, for stiffening I suppose.

>>

>> It is the raised side that causes problems when trying to attach 

>> something

>> flat there.  I'd like to somehow squash or flatten a portion of the 

>> raised

>> circle, just enough so that the things I need to mount will fit flush on 

>> the

>> rib.  Yes, some things must go onto the rib. No, some of this I cannot 

>> mount

>> on the other side.

>> What have RVers done to solve this little problem?

>> Thanks,

>> Ralph Finch

>> Davis, California

>> RV-9A QB-SA

>>

>>

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