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  #1  
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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  #2  
Old 09-25-2011, 07:30 PM
AlphaCharlieBravo AlphaCharlieBravo is offline
 
Join Date: Nov 2008
Location: Olympia,WA
Posts: 203
Default

Yes, the gear attach web gets drilled to 1" as well. I used a spade bit and it worked nicely.
All the best.
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  #3  
Old 09-27-2011, 02:51 PM
mg1003 mg1003 is offline
 
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Location: Sunnyvale, CA
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Default Thank you

Thank you for the confirmation!
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  #4  
Old 09-27-2011, 07:56 PM
terrye terrye is offline
 
Join Date: Feb 2010
Location: Vancouver, BC, Canada
Posts: 647
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.
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RV-9A (Fuselage)
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  #5  
Old 02-21-2017, 05:37 AM
JurgenRoeland JurgenRoeland is offline
 
Join Date: Oct 2010
Location: Belgium, Geraardsbergen
Posts: 102
Default

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) ?
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  #6  
Old 02-21-2017, 09:18 AM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 2,726
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.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
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Donated 12/01/2017. Plus a little extra.
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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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  #7  
Old 02-21-2017, 10:25 AM
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bret bret is offline
 
Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,689
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And then using compressed air and vacuum to try and get all those drillings out between the two pieces was fun
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  #8  
Old 02-21-2017, 10:42 AM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Debris

Quote:
Originally Posted by bret View Post
And then using compressed air and vacuum to try and get all those drillings out between the two pieces was fun
Try? I'm still getting debris out of there.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
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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  #9  
Old 08-21-2017, 04:14 PM
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byoung byoung is offline
 
Join Date: Mar 2011
Location: Remond WA
Posts: 29
Default When to drill the 1 inch holes?

Is there any reason to not drill the 1 inch hole in the skin and gear attach before riveting the forward fuselage?
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Bob Young
RV7A
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  #10  
Old 08-21-2017, 08:20 PM
rapid_ascent rapid_ascent is offline
 
Join Date: Mar 2008
Location: Dublin, CA
Posts: 824
Default

I used a unibit and drilled working from both sides. I did mine while the pieces were clecoed together so I could then prime the holes.

I also bought some other grommets from McMaster at the recommendation of another VAFer that spanned the 2 pieces. I had to buy a bag of them so if you want a couple PM me your address and I'll send you a couple in the mail.
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