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About those stiffening circles around the lightening holes i

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rgf(at)dcn.davis.ca.us
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Posted: Fri Jul 24, 2009 9:51 am Post subject: About those stiffening circles around the lightening holes i

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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dthomas773(at)sbcglobal.n
Guest

Posted: Fri Jul 24, 2009 11:20 am Post subject: About those stiffening circles around the lightening holes i

Hi Ralph,

The raised area around the holes are to stiffen and strengthen the rib.  In mashing them flat you may distort the shape of the rib as well as weaken it.  Before doing that I would suggest talking to one the techs at Van's.



Dennis Thomas

RV-9

485 hours

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