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06-03-2020, 08:30 AM
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Join Date: Feb 2018
Location: Ramona, CA
Posts: 175
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draining fuel tank
I need to remove the right tank to repair the vent line. What is the best way to remove the fuel. It is full. The left tank is approximately 2/3 full.
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RV-7 builder Ramona, CA.
Free prop balancing for Vans owners
(I am not in the business of prop balancing, just as a courtesy to meet other owners.)
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06-03-2020, 08:38 AM
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Join Date: Jun 2005
Posts: 16
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I just drained the tank on my 7-A by removing the fitting for the sump and drained it into 5 gallon cans.
Phil
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06-03-2020, 08:53 AM
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Join Date: Jan 2017
Location: Battle Ground WA
Posts: 44
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Ha that's an easy one. My method is. Fly till the tank runs dry switch to other and land. Pull tank. No brainer.
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06-03-2020, 08:59 AM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,300
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Quote:
Originally Posted by phil_101_99
I just drained the tank on my 7-A by removing the fitting for the sump and drained it into 5 gallon cans.
Phil
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A length of bare wire clipped to a metal part of the RV with the other end dropped into the bottom of the plastic should reduce the possibility of static spark discharge. |
06-03-2020, 09:01 AM
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Join Date: Jan 2006
Location: Vonore, TN
Posts: 368
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When I was calibrating my tank floats, I got some hardware store pipe nipples the same thread size as the tank drain, a quarter turn valve and a length of rubber hose to allow be to de-fuel into 5 gallon containers. There was still a splash of fuel when removing the drain and installing the pipe/valve/hose assembly. Be wary of static discharge.
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John Tierney
Vonore, TN
RV-7A - N777JT Flying
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06-03-2020, 09:47 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,476
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Listen to Sam. Airplanes and hangars have burned.
Electrically tie the airframe, funnel, and fuel in the jug, then ground them. Can't spark if they are all at the same potential.
I use a metal funnel with the appropriate wires and alligator clips permanently attached.
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Dan Horton
RV-8 SS
Barrett IO-390
Last edited by DanH : 06-03-2020 at 09:49 AM.
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06-03-2020, 10:10 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,931
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Ground
Dan
What ground is best? Hangar frame I-beam steel?
There isn't a ground rod nearby in my hangar.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ 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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06-03-2020, 11:00 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,476
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Quote:
Originally Posted by wirejock
Dan
What ground is best? Hangar frame I-beam steel?
There isn't a ground rod nearby in my hangar.
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I think that's fine. The ground is a plus. The important thing is to ensure the same potential for the airframe, fuel/jug, and funnel. The fuel is picking up a static charge as it falls through the air. If it builds enough, it will discharge. Tie all the components together and it can't build.
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Dan Horton
RV-8 SS
Barrett IO-390
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06-03-2020, 11:45 AM
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Join Date: Sep 2018
Location: LSZF
Posts: 418
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been mentioned on VAF before, use the Chinese siphon hose with that wiggly ball, works good.
Bought mine at the KOSH fly market 20 years ago, still works good 
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Life's short... Enjoy
DC aka Dan
http://www.aerofun.ch
RV-6.9 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner & lover
RV-4 #2062 HB-YVZ airframe builder
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06-03-2020, 10:29 PM
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Join Date: Mar 2008
Location: Ramona, CA
Posts: 2,367
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The best way to empty a tank is to go FLY! 
Jim, if you need gas cans, I have 6 in my hangar. Used them recently to drain and recalibrate another RV. I'll be around all day tomorrow. |
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