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Old 09-25-2011, 02:04 PM
mg1003 mg1003 is offline
Join Date: Sep 2008
Location: Sunnyvale, CA
Posts: 15
Default 1" hole through both F-770 and F-7101

After an 8 month break I am trying to restart my RV-7A.
I have a question: There is a 1" hole shown for the the fuel line in the forward side skin (F-770) (just in front of the main spar). It appears that this hole will also need to enlarged in the gear attach web (F-7101-L and F-7101-R). Can anyone confirm this (or stop me from making a mistake)??
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Old 09-25-2011, 07:30 PM
AlphaCharlieBravo AlphaCharlieBravo is offline
Join Date: Nov 2008
Location: Olympia,WA
Posts: 204

Yes, the gear attach web gets drilled to 1" as well. I used a spade bit and it worked nicely.
All the best.
Arnie Barros
VAF #1401
(N89269) reserved
"Seek to understand before trying to be understood"
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Old 09-27-2011, 02:51 PM
mg1003 mg1003 is offline
Join Date: Sep 2008
Location: Sunnyvale, CA
Posts: 15
Default Thank you

Thank you for the confirmation!
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Old 09-27-2011, 07:56 PM
terrye terrye is offline
Join Date: Feb 2010
Location: Vancouver, BC, Canada
Posts: 721
Default 1" Hole

I used a Unibit (step drill) on the skin and on the gear doubler, enlarging the pre punched hole in each part. When I clecoed them back together, the 1" holes didn't quite match up.

Suggest you drill with the parts clecoed together first, then the 1" holes are sure to align.
Terry Edwards
RV-9A (Fuselage)
2018/2019 VAF Contribution Sent
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Old 02-21-2017, 05:37 AM
JurgenRoeland JurgenRoeland is offline
Join Date: Oct 2010
Location: Belgium, Geraardsbergen
Posts: 102

small additional question related to this fuel line penetration of the side skin and F7101. The F7101 gear attach and F770 side skin sit quite far appart by the angles underneath. How does this work on for the future installation of the fuel line.
Will each 1" hole have it's own rubber grommet on it or will there be only one grommet that sits in the side skin and the second hole is just 1 inch size hole without grommet, or will the grommet go over both holes (which seems unlikely to me) ?
Jurgen Roeland
RV7 builder Belgium
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Old 02-21-2017, 09:18 AM
wirejock's Avatar
wirejock wirejock is offline
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,069
Default Holes

I waited till it was time to run fuel lines. I decided to buy TS Flightlines fuel lines. They're one piece from Anadir fuel selector to tank. I drilled the holes using a uninitialized big enough to clear the fitting. I put two grommets on the line and passed it through the hole then carefully coaxed the grommets into the side skin parts. It wasn't easy but one grommet wouldn't span both pieces. Mine is an "A" model so no fear parts there.
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/27/2018. Plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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