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11-30-2013, 09:34 AM
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Join Date: Nov 2009
Location: Jesup, GA
Posts: 181
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RV-8 Gear Tower Mod Question?
After doing my research I decided to do the "Gear Tower Mod" including the lower two holes in the F802-C R1 & L1. I noticed my access cover will partially cover a 5/32" hole adjacent to the 10th rivet up from top of the WD813-1 weldment. It's the same on both the left and right towers. My questions are:
1.) What is this for?
2.) Is it something I can move?
3.) If not, do I need to make room for it in my cover panel?
Thanks for all your help!
Tim

__________________
RV-8
Phase 1 Flight Testing
Garmin IFR by Stein
Lycoming IO-360 (180HP)
MT 3 Blade CS
N84TH / Registered and GA sales tax paid! $@&!;:?)(!
N3159F C-182 @ KJES
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11-30-2013, 11:15 AM
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Join Date: Oct 2007
Location: Nashville, TN
Posts: 227
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Aluminum tube mount screw
I think I remember this is a screw for mounting a clamp. I just made a notch for crearance.
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Randy Hooper
RV-8
N84H
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11-30-2013, 05:35 PM
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Join Date: Nov 2010
Location: Okanagan Valley BC, Canada
Posts: 483
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I did not use it, but then I did not plumb the brakes or the fuel vent per the plans... You can always drill another hole to suit...
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Ron Townson
Okanagan Valley BC, Canada
RV-8 Completed Dec 2013
Membership renewed Sept 8, 2019
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12-03-2013, 10:31 AM
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Join Date: Nov 2009
Location: Jesup, GA
Posts: 181
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Thanks!
Thanks for the help!
Tim
__________________
RV-8
Phase 1 Flight Testing
Garmin IFR by Stein
Lycoming IO-360 (180HP)
MT 3 Blade CS
N84TH / Registered and GA sales tax paid! $@&!;:?)(!
N3159F C-182 @ KJES
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01-26-2015, 12:39 AM
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Join Date: Apr 2011
Location: SF East Bay
Posts: 852
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This is why I donate for this site.
Started planning out my gear tower mod today and encountered this same issue. Did a quick scan of the plans and couldn't see why I couldn't cover the hole up but thought I would see if anybody else had encountered it before. You can see the hole just to the right of the top tape. Need to confirm it makes min edge distance with the planned hole right next to it or I might have to adjust some dimensions on my template to get the MED.

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Sam
RV-8 with the Showplanes Fastback conversion
Emp completed except for glass work
Wings completed except for bottom skin and glass work
Fuselage underway
N18451 reserved
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01-26-2015, 07:28 PM
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Join Date: Feb 2012
Location: Bonita, Ca
Posts: 56
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Be sure you check the clearance between the nut plates and the L chanels on the back side before you drill your screw holes!
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Empannagee done
Wings 90% done
Received fuselage
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01-26-2015, 09:09 PM
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Join Date: Oct 2007
Location: Old Saybrook, CT
Posts: 201
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Two mods or one?
It seems there are two issues w/in the gear towers: installing and inspecting the gear bolts and installing fuel lines. There seems to be a school of thought to invert the gear bolts so the nut is on the bottom, eliminating the need to get back into the tower to torque it. My question is; if you invert the gear bolt, is it still necessary or helpful to do the tower mod? How often do you need to get in there other than for the gear bolt installation or inspection?
__________________
Clay "Cookiemonster" Cook
USAF: T-38, F-111F
American Airlines: 727, MD80, 757, 767, 737
RV8 #81751 project sold
RV8 #81651 project acquired
https://theonceandfutureflyer.wordpress.com/
Donations up to date thru December 2015
"...serenity...courage...and wisdom..."
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01-27-2015, 02:39 AM
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Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
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Bolt up or down, to properly torque the bolt, you must get the gear off the ground. Once off, the bolt(s) will spin most likely. So you will need to get in there regardless. You will check the torque annually, or when you hear noises. Mine creaked on taxi as wing rocked to alert me to go torque them again. They have not creaked, nor changed torqued since installing the NAS nuts.
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Kahuna
6A, S8 ,
Gold Hill, NC25
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08-26-2015, 03:34 PM
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Join Date: Jan 2005
Location: Battle Ground, Washington
Posts: 138
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Questions for Kahuna
In your 2012 VAF post you described finding a loose gear leg nut. You mentioned that your gear squeaked; did you ever notice squirrelly ground tracking behavior? When you replaced the NAS679A6 nuts with the NAS1804-6 nuts were you able to use the same length bolts? I am not sure that the grip-length is the same with those two nuts. Finally, did you use the same hardened washers under the 1804-6 nuts? I have a terrible time getting a socket on the 679A6 nuts and am hoping the 1804-6 nuts are much easier to reach.
Thanks!
Dan Miller
RV-8 N3TU 1500+ hours
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08-26-2015, 04:06 PM
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Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
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Quote:
Originally Posted by cdmiller
In your 2012 VAF post you described finding a loose gear leg nut. You mentioned that your gear squeaked; did you ever notice squirrelly ground tracking behavior? When you replaced the NAS679A6 nuts with the NAS1804-6 nuts were you able to use the same length bolts? I am not sure that the grip-length is the same with those two nuts. Finally, did you use the same hardened washers under the 1804-6 nuts? I have a terrible time getting a socket on the 679A6 nuts and am hoping the 1804-6 nuts are much easier to reach.
Thanks!
Dan Miller
RV-8 N3TU 1500+ hours
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Never noticed any ground handling changes. I could easily tell it was getting to be time to retorque by the creaking. Slight creak, got another 50 hours. Lots of creak, time to torque em.
I used the same washers. The nuts are NOT easier to reach! But they ARE easier to deal with. With the smaller 1/2" 12 point nut, a smaller socket than the 9/16, and that gives you the room you need to get onto them with a 12point 1/2" socket with no hassle at all.
BTW, my cutout goes all the way to the top of the tower. And this is useful. A lot of wires and things go up through the top and to the panel.
__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
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