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Conduit and Abrasion

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Andy Turner

Joined: 10 Jan 2006
Posts: 31
Location: Clarion, PA

Posted: Sat Jan 29, 2011 9:46 am Post subject: Conduit and Abrasion

Well, this is one of those "making decisions when working late at night and then waking up the next morning and feeling bad about it" situations. I ran Van's 3/4" conduit under the baggage compartment of my RV-10, and then riveted floors into place. I fabricated aluminum supports which attach to the floor ribs as shown below. Due to the corrugations, you have to open up the hole to the point that the conduit rattles around in there. So I put some RTV on the conduit and support (I know, E6000 would have been better), and buttoned everything up. Almost immediately had visions of the support wearing a hole in the conduit and shorting out the battery main feed. On the right side I did it right, with snap bushings or grommet protecting conduit from aluminum. Question is, is the left side setup shown below a short waiting to happen? How resistant is this conduit to abrasion? The aluminum support is 0.32, well polished.

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_________________
Andy Turner

nuckolls.bob(at)aeroelect
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Posted: Sat Jan 29, 2011 8:07 pm Post subject: Conduit and Abrasion

 	  Quote: 	
		  On the right side I did it right, with snap bushings or grommet protecting conduit from aluminum. Question is, is the left side setup shown below a short waiting to happen? How resistant is this conduit to abrasion? The aluminum support is 0.32, well polished. 	
 

 

   Legacy design practice avoids having any material

   carrying any commodity free to "ride loose" on the

   edge of a sheet. Consider caterpillar grommets for

   your problem holes.



  http://tinyurl.com/4kj3ak4 



  http://www.surplussales.com/rubber-plastic/plastic-2.html



   http://www.aircraftspruce.com/catalog/appages/grommetedging.php

 

   There are many other sources for similar products.

   These will soften the edges while widening them

   to the extent that they do not produce wearing

   pressure on the conduit or wires.



   The cool thing is that it can be added over an

   existing conduit installation.



   Bob . . .



 



     [quote][b]

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