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03-26-2013, 05:49 PM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 886
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Opening tanks to avoid potential leaks?
My tanks were built with the gasket, not prosealed. I am considering opening them up and looking into them (QB) and only sealing with proseal. Based on other builder comments, it seems like a fine plan. Any gotchas(besides prep, etc?)
Rick 90432
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Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2020 VAF contributor
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03-27-2013, 04:53 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Mornin' Rick...I'm old school..."If it ain't broke, don't fix it"
Unless they're leaking, I'd leave them alone because they may leak afterwards.
Best,
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Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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03-27-2013, 07:06 AM
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Moderator/Tech Counselor
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Join Date: Jan 2005
Location: East Troy, WI
Posts: 1,983
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I agree!!!!
Roberta
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Roberta Hegy
Built/Flew an RV-7A
Air Troy Estates, East Troy, WI
Ford Expedition and TRICE "Q"
Built Glen L "ZIP" Classic Outboard Runabout and Super Spartan Hydroplane
Glen L Torpedo
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03-27-2013, 07:14 AM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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I would never install a set of QB tanks without opening them up for inspection first. Rather than buy new gaskets, I would use PS to close them up. Make sure you use plently of PS on the screw threads, this is where many of the cover plate leaks originate.
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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
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RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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03-27-2013, 07:16 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Tons of folks have found that the nuts were never tightened on their vent lines with QB tanks. If you have access, I would check em...
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03-27-2013, 07:37 AM
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Join Date: Jun 2005
Posts: 846
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Tanks
On my older quick build i had to open to install gauges and i went back with Aviation #3 on cork seals and screws the reason is on my past Rv6 we had a tank leak and tried to fix it without taking the tank off and i sure would not have wanted to try that with PS on the cover in the 2" to work in .
Bob
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03-27-2013, 08:02 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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I've seen many, many tanks with gaskets leak after several years.
The cork gets saturated after a while.
I would remove the covers, thoroughly inspect inside, and reinstall with pro-seal.
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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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03-27-2013, 08:54 AM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 886
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I should have been clearer . . .
For me the time to open the tanks is now. They are happliy match drilled for incedence, and are are back in the rack, so I can get to them with little trouble.
On further thought, the loose nut question scares me a bit, so I'll be opening them up and nutting the fittings inside, then sealing without gaskets, I think.

Rick
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Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2020 VAF contributor
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03-27-2013, 09:43 AM
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Join Date: Jan 2005
Location: Venice, Fl
Posts: 1,020
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I think Pierre and Roberta missed the fact that you aren't flying yet. If you we're flying I would agree with them. (It was early morning for them lol)
However, you can easily get a look inside now before the wing install. I used ps and no gasket. Just my opinion but I have seen fewer leaks with this method. Also, I used square head screw fasteners instead of AN screws "just in case".
Example may not be the exact screw. I don't remember and I'm out of town.
http://www.mcfeelys.com/product/RMS-1404
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Gary Palinkas - Gman.... VAF #161
Venice, Fl
RV-6 "Sassy" Flying 400 hrs since Oct 2011
Lycoming 0-360 A1A, FP Sensenich Prop
SARL #19 .... Van's Calendar March 2015
Although exempt several ways, =VAF= Dues paid to support this awesome site/family
Last edited by GLPalinkas : 03-27-2013 at 09:57 AM.
Reason: Added text
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03-27-2013, 10:27 AM
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Join Date: Feb 2012
Location: 3rd Rock fm the Sun
Posts: 114
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Quote:
Originally Posted by pierre smith
Mornin' Rick...I'm old school..."If it ain't broke, don't fix it"
Unless they're leaking, I'd leave them alone because they may leak afterwards.
Best,
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Ain't you got enough work to do  Listen to Pierre, no drips, no worries, no reason to make additional work unless you have a real love for working with proseal.
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Jailbird/CW Kleen
RV6 KGIF
Donor through 2020
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