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  #11  
Old 08-24-2015, 11:30 AM
Sam Buchanan's Avatar
Sam Buchanan Sam Buchanan is offline
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Join Date: Dec 2004
Location: North Alabama
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Quote:
Originally Posted by kcpilot81 View Post
For those who have used the VTE bushings, did you buy the Greenlee punch? If no, how did you make the 1.375x1.125 size holes?
I just looked at these pass-throughs, pretty slick. I see no reason why you can't mount them in a round 1.375" hole. A uni-bit or hole saw can be used for drilling the hole. You lose the anti-rotation feature with the round hole but that shouldn't be a problem during assembly if you can immobilize one end of the pass-through.
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RV-6
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Last edited by Sam Buchanan : 08-24-2015 at 11:35 AM.
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  #12  
Old 08-24-2015, 11:50 AM
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bill@fusion4.net bill@fusion4.net is offline
 
Join Date: Feb 2011
Location: Suwanee, GA
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Quote:
Originally Posted by kcpilot81 View Post
For those who have used the VTE bushings, did you buy the Greenlee punch? If no, how did you make the 1.375x1.125 size holes?
Combination step drill, and dremel. Not perfect, but close enough. 20-30 min of work.
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RV-10 - Flying - Phase II. 99.8% done... it's never really done!
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  #13  
Old 08-31-2015, 05:27 PM
togaflyer togaflyer is offline
 
Join Date: Apr 2013
Location: Southeast
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The VTE pass through, rated to over 500 volts is good, but at what temperature does the plastic terminals begin to fail. if there was an engine fire and the plastic melts, then you may have a main power line short right at the firewall, that could cause fire and smoke to enter the cabin.
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  #14  
Old 08-31-2015, 08:01 PM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,189
Default Risk Management

Although the ONLY way to be truly safe is to NOT fly the airplane, it is a valid point...one that I considered for quite awhile.

Then I realized that Van himself recommended drilling a hole in the firewall, inserting a plastic bushing, and running a #2 AWG cable through the plastic bushing. I don't think that the insulation on that wire is going to hold up any better...

That being said, I am mitigating the issue by making a heat shield from 018 stainless that will help to shield the pass through...
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Aerospace Engineer '88

RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
297 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful
Wiring...

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