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08-25-2023, 02:57 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,644
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Mystery holes
Does anyone know what hardware should be installed in these two holes?
There are two each side in the forward side of the Center Section. They don't attach to anything as far as I can tell.
The Aft side has two bolts that go in from Aft-Forward into nutplates in the wing spar web.
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
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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08-25-2023, 03:14 PM
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Join Date: Jun 2005
Location: Georgetown, TX
Posts: 1,660
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Quote:
Originally Posted by wirejock
Does anyone know what hardware should be installed in these two holes?
There are two each side in the forward side of the Center Section. They don't attach to anything as far as I can tell.
The Aft side has two bolts that go in from Aft-Forward into nutplates in the wing spar web.
Attachment 47042 |
Residual holes from common parts -- the forward parts are the same as the aft parts.
__________________
Brian Decker
EAA Technical Counselor
RV-7 (Flying)
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08-25-2023, 03:30 PM
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Join Date: Jan 2023
Location: Northcoast
Posts: 115
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Quote:
Originally Posted by wirejock
Does anyone know what hardware should be installed in these two holes?
There are two each side in the forward side of the Center Section. They don't attach to anything as far as I can tell.
The Aft side has two bolts that go in from Aft-Forward into nutplates in the wing spar web.
Attachment 47042 |
Those are used on the -8 on the aft but no holes on the fwd side of center section on mine. I know -7 vs -8
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ATP, CFII, A&P
Building=RV8
#83316
IO-360-M1B
WW 330-73
Last edited by 2theskyy : 08-25-2023 at 03:33 PM.
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08-25-2023, 03:34 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 7,280
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Check the Service bulletin that talks about missing bolts.
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags, AFP FI, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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08-25-2023, 04:02 PM
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Join Date: Jul 2007
Location: Litchfield Park, AZ
Posts: 1,314
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Quote:
Originally Posted by Walt
Check the Service bulletin that talks about missing bolts.
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That SB is for the rear bolts. These do not carry through and are open with no hardware filling them.
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Carlos in Arizona
EAA Chapter 538 www.chapters.eaa.org/eaa538
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (Granted AWC on 9.16.2023 and in Phase I)
"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill
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08-25-2023, 04:28 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,644
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Mystery holes
Thanks everyone. Getting close to finishing, I get really nervous when I find stuff like this.
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
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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08-25-2023, 04:53 PM
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Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 2,143
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Quote:
Originally Posted by Walt
Check the Service bulletin that talks about missing bolts.
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I kinda helped instigate that SB a long time ago. Found & reported 3 RVs with them missing...
Drawing 11 - AN4-13A bolts, there should be 2 nutplates on front side of spar located between the big attach bolts.
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Ralph
Now retired - my builder assist shop now closed, 
Last edited by Ralph Inkster : 08-25-2023 at 04:58 PM.
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08-25-2023, 05:03 PM
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Join Date: Jan 2016
Location: Southwest, USA
Posts: 2,895
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Just me
On my rv9a, those get bolts through the shear web, probably to keep shear web from flexing.
But let me warn you, when you install the nutplates, put a bolt in them. Mine tended to wonder away from center when riveted on. I had to really work at getting those bolts in when I put the wings on.
__________________
John S
WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Dues paid 2023, worth every penny
RV9A- Status:
Flying June 2023
www.pilotjohnsrv9.blogspot.com
or builders log here on VAF: Pilotjohns
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08-25-2023, 05:13 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,644
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Quote:
Originally Posted by Ralph Inkster
I kinda helped instigate that SB a long time ago. Found & reported 3 RVs with them missing...
Drawing 11 - AN4-13A bolts, there should be 2 nutplates on front side of spar located between the big attach bolts.
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That's not a problem. I see those on the drawings. The bolts go in Aft-Forward into nutplates in the wing spar web. Nutplates are installed.
Quote:
Originally Posted by PilotjohnS
On my rv9a, those get bolts through the shear web, probably to keep shear web from flexing.
But let me warn you, when you install the nutplates, put a bolt in them. Mine tended to wonder away from center when riveted on. I had to really work at getting those bolts in when I put the wings on.
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Good point. I will check before installing the wings but as a matter of habit, I always use a screw or bolt to align the nutplate before riveting. I've been burned as well.
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
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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08-25-2023, 06:22 PM
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Join Date: Oct 2007
Location: Jackson, MS
Posts: 1,876
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Don’t know about the 7 but an 8 does use.
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Webb Willmott
KJVW
RV8 - Current Build
N414WW Reserved
V35B - Flying
RV7A - N32WW (Sold)
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