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10-08-2015, 01:51 PM
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Join Date: May 2015
Location: Crittenden, ky
Posts: 194
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New guy wondering why?
I'm planning how to run wires and hoses through the wing, and seeing the "recommended" method and seemingly universally used of cutting holes in all of the ribs to run a conduit to the wingtip. I see lots of really big holes already in the ribs and wondering why we don't have (or maybe there is) a neat way to clamp that conduit to the edge of the lightening holes - leaving my ribs very slightly stronger???
Comments? Appreciated!
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10-08-2015, 01:55 PM
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Join Date: Nov 2006
Location: Savannah, GA
Posts: 1,029
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Weight savings (removed material plus hardware not needed) 
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RV-7ER - finishing kit and systems installation
There are two kinds of fool in the world. The first says "this is old, and therefore good"; the second says "this is new, and therefore better".
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10-08-2015, 01:55 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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That IS done and it is not uncommon. Just be sure that if you use the same holes that pushrods run through, you manipulate the controls to all possible configurations, making sure to provide plenty of clearance.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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10-08-2015, 02:08 PM
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Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 2,246
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I used fluorescent lamp sleeve tubes run trough the lightening holes in the ribs. Very thin wall polycarbonate, lots of room for wire and they weigh almost nothing. They're secured with tabs and zip ties, with a dab of RTV on each tab just for good measure.
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Dale
Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
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10-08-2015, 02:42 PM
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Join Date: Jul 2013
Location: US
Posts: 2,246
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There are a lot of nice solutions for holding wire bundles or conduit in place and protected at the edges of lightening holes...
Things like this:
http://www.panduit.com/wcs/Satellite...ame=PG_Wrapper |
10-08-2015, 03:01 PM
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Join Date: Jan 2005
Location: Tampa, FL
Posts: 2,861
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Simplicity is why I went Van's corrugated tubing. Drill a 3/4 inch hole, thread the tubing through and done -- no fasteners required and t he install is quick and easy.
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Todd "I drink and know things" Stovall
PP ASEL-IA
RV-10 N728TT - Flying!
WAR EAGLE!
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10-08-2015, 03:18 PM
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Moderator, Asst. Line Boy
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Join Date: Jan 2010
Location: Flower Mound, TX
Posts: 1,472
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Quote:
Originally Posted by Auburntsts
Simplicity is why I went Van's corrugated tubing. Drill a 3/4 inch hole, thread the tubing through and done -- no fasteners required and t he install is quick and easy.
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Same for me. Easy peasy, very little weight, and follow's the Mother Ship's recommendations.
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Scroll
Sid "Scroll" Mayeux, Col, USAF (ret)
52F NW Regional/Aero Valley Airport, Roanoke TX (home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper
Catch her on YouTube's "Because I Fly!" channel
Exemption waived.
Proud and grateful 2020 -=VAF=- Contributor
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10-08-2015, 03:54 PM
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Join Date: Dec 2009
Location: Montreal
Posts: 1,456
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The web really isn't doing much in terms of strength. That's why you can cut a 5" hole in it and not impact wing strength. So another 3/4" hole makes no difference. It is basically there to hold the 2 rib flanges apart. Think of a built up wood rib - there is nothing in the middle for 95% of it - just a few sticks. If you want to do it your way then great - your airplane. But if you run a conduit don't worry about strength. It is not an issue.
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Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2020
Instagram @sblack2154
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