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03-27-2013, 04:05 AM
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Join Date: Mar 2011
Location: Withcott, QLD, AUSTRALIA
Posts: 9
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RV-9 increased fuel capacity
Hi All,
Ive been wanted to build an RV 9 for years and am going to bite the bullet this week before the price rise. The only concern I have is the fuel capacity on the 9. I know there are other threads addressing this issue but would love to hear from someone who has increased the standard tank size. Im hoping to do this by increasing the number of bays used.
Also any other advice for a newbie would be greatly appreciated.
Thanks in advance
Pete
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03-27-2013, 04:31 AM
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Join Date: Oct 2008
Location: Utah
Posts: 8,151
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Pete welcome! I have standard fuel tanks but would love to have full leading edge tanks like these. It's a lot of extra work you have to fabricate your own leading edge skins.

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03-27-2013, 07:24 AM
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Join Date: Aug 2010
Location: Irvine, CA
Posts: 416
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Pete,
Again, welcome. A buddy in our EAA chapter installed aux tanks in his TD -9, filled from a second set of ports in the tips. My WAG is that his mod would likely be easier than a complete redesign of the standard tanks. He's not on this forum, so I'll ask him about the details and get back to you...may take a few days.
__________________
John Halcrow
Tustin, CA
RV-12 120682
Emp/TC done; Wings done; Fuse kit done
"History teaches us that men and nations behave wisely once they have exhausted all other alternatives." --Abba Eban
Paid up until Aug 2021
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03-27-2013, 07:37 AM
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Join Date: Jan 2007
Location: Orem, UT
Posts: 213
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RV-14
Wanting larger fuel tanks sounds like a reason to consider the RV-14.
__________________
Finishing -12 tail cone
-9A Empennage done, in storage
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03-27-2013, 08:17 AM
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Join Date: Dec 2005
Location: Mahomet, Illinois
Posts: 2,195
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I echo TThurston's comment.
__________________
Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
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03-27-2013, 08:25 AM
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Join Date: Dec 2006
Location: Portland, OR
Posts: 827
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Quote:
Originally Posted by TThurston
Wanting larger fuel tanks sounds like a reason to consider the RV-14.
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True enough, but for those already commited to their existing project....
I built 2-8 gal tanks out of fiberglass using the Rutan Long-EZ tank technique. They fit behind the seat backs so the CG arm is near the pilot station. The tanks cross tie and feed directly into the Van's standard fuel valve port that is otherwise plugged. I have the design set up for single or duel tank installation.
My brother built an Al tank that fits on the baggage floor for his -9A, though he's not yet flying.
I've found that using just one of my tanks has been plenty fuel for a "typical" cross country. I take off and climb on the Aux tank when burn rate is highest to use it up soonest and burn it off to "dry". Then settle into the rest of the flight LOP at altitude. Typically gives me 6 hrs of flight time and around a 1,000 air miles.
https://plus.google.com/photos/11665...129?banner=pwa
__________________
Long-EZ built 1985 -> Sold 2007
RV-9A; N539RV First Flight: 7/2010
RV-8A N468DL 40 hr Flight Test Program
Building Log: www.mykitlog.com/n539rv
APRS Tracking: aprs.fi/n539rv
2017 Paid
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03-27-2013, 08:48 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Quote:
Originally Posted by PJ79
Hi All,
Ive been wanted to build an RV 9 for years and am going to bite the bullet this week before the price rise. The only concern I have is the fuel capacity on the 9. I know there are other threads addressing this issue but would love to hear from someone who has increased the standard tank size. Im hoping to do this by increasing the number of bays used.
Also any other advice for a newbie would be greatly appreciated.
Thanks in advance
Pete
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Pete, there are the Safe-air tanks that give you another 10 gallons or so, if that's enough. They're filled at the wingtip, under a flip-up door you install and consist of an aluminum tube that slides into the holes in the ribs.
Here: http://www.safeair1.com/fueltanks/rv9ertanks.php
Best,
__________________
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!
Last edited by pierre smith : 03-27-2013 at 08:54 AM.
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03-27-2013, 10:02 AM
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Join Date: Dec 2007
Location: Aubrey, TX
Posts: 358
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Aux Tanks
Pete,
I have the Hotel Whisky Aux tanks on my 9. Now I haven?t flown yet but there is a guy out in West Texas that has. There are also plenty of RV-8 and RV-7 guys that have the Hotel Whisky tanks.
They are well built and fairly simple. I highly recommend them.
__________________
Dean Eiland
Aubrey, TX
Former Vice President EAA Chapter 1246
RV-9 (yes) N369RV
Mattituck IO-360, C/S Whirl Wind Prop, GRT, Digiflight II, Garmin SL30 & GTX 330 and Hotel Whisky Aux tanks, Bla Bla Bla
Flying
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03-27-2013, 10:26 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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I've been flying with Hotel-Whiskey extended range tanks in my -6 for over 3 years and love them!
Basically these tanks are designed to give a little over 1 hour of extended range on each model.
__________________
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, 10:42 AM
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Join Date: Jan 2009
Location: Denver, CO
Posts: 590
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I did a smaller version of the "Tuckey Tanks"...about 9 gallons each side from my volume calculations, so I should be around 60 gallons total. Not flying yet so no PIREPS but plenty of people have done this mod, it wasnt very difficult and fairly inexpensive. It is more work though, no doubt.
http://ronsrv7project.blogspot.com/2...obbs-3380.html
Click on the link in my post for "Pat Tuckey" and he has a great detailed writeup on how to do it. Good luck!
__________________
Ron Duren
Mechanical Engineer
"SportAir PhD"-RV Assembly/Composites/Electrical
Denver, CO (KBJC)
RV-7 'Tip Up'
Flying!! as of 3/16/14
IO-375/ WW 200G-CS/ SkyView/ Dual P-mags
N531R "Wablosa" Wings of Red
http://www.ronsrv7project.blogspot.com
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