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  #21  
Old 02-15-2014, 09:13 AM
Seaflyer16 Seaflyer16 is offline
 
Join Date: Sep 2010
Location: Salt Lake City, UT
Posts: 28
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Check your airport regs. I had to have a metal container with either a metal spout or a 2 gal. metal funnel.
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Tom Driscoll
Salt Lake City, UT
#120414 N160BD RV-12 Flying
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  #22  
Old 02-28-2014, 08:31 AM
Dan109 Dan109 is offline
 
Join Date: Feb 2013
Location: Woodlands, TX
Posts: 7
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For those of you that have the Bykas fueler, I have a question. I contacted Bykas and learned that the 30 gallon tank was pressured tested to 10 psi and they said that the unit usually operates at 2-3 psi. At this low of a pressure this would only allow the difference between the fuel level in the tank and the fill point on the plane to be 6-9 inches. At 10 psi it would be 30 inches.

Can you utilize all 30 gallons or are you really only able to utilize the upper 15-20 gals?

Of course my math could be wrong also.

Thanks in advance.
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  #23  
Old 02-28-2014, 08:39 AM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by Dan109 View Post
For those of you that have the Bykas fueler, I have a question. I contacted Bykas and learned that the 30 gallon tank was pressured tested to 10 psi and they said that the unit usually operates at 2-3 psi. At this low of a pressure this would only allow the difference between the fuel level in the tank and the fill point on the plane to be 6-9 inches. At 10 psi it would be 30 inches.

Can you utilize all 30 gallons or are you really only able to utilize the upper 15-20 gals?

Of course my math could be wrong also.

Thanks in advance.
We drain ours nearly dry operating between 4 - 5 PSI.
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Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
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  #24  
Old 02-28-2014, 08:50 AM
mrt890 mrt890 is offline
 
Join Date: May 2008
Location: Friday Harbor, Wa
Posts: 300
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One PSI equals 27.7 inches water column. So 1 psi will raise water 27.7 inches. Gasoline being lighter will go a little bit higher.
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  #25  
Old 02-28-2014, 09:47 AM
Dan109 Dan109 is offline
 
Join Date: Feb 2013
Location: Woodlands, TX
Posts: 7
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Quote:
Originally Posted by mrt890 View Post
One PSI equals 27.7 inches water column. So 1 psi will raise water 27.7 inches. Gasoline being lighter will go a little bit higher.
I just realized the error in my math. Thanks guys. 1 psi isn't 12 psf, it's 144 psf, so 2 psi will be 288 psf. Gasoline's density is about 45 pcf. So 288/45 is about 6 feet. Now it makes sense.
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  #26  
Old 02-28-2014, 10:38 AM
NASA515 NASA515 is offline
 
Join Date: Nov 2011
Location: Hansville, Washington
Posts: 536
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I run mine dry regularly with no problem at all. I just pump until it starts spitting. I don't have a pressure gage on it, but there's a pressure relief valve that I believe is set for 2.5-3.0 psi. In any event, I've never cracked the pressure relief while pressurizing the tank, and the fuel flow is very substantial.

I never fill the tank beyond about 20 gals.

Bob Bogash
N737G
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  #27  
Old 02-28-2014, 11:10 AM
Dan109 Dan109 is offline
 
Join Date: Feb 2013
Location: Woodlands, TX
Posts: 7
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Thanks everyone. I just placed an order.
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  #28  
Old 02-28-2014, 12:39 PM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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We have been using this fueling system for a few years now.
One modification I strongly recommend is to add some type of inline filtration.

Either in the pickup hose inside the tank or the nozzle hose.

The difference between avgas and auto fuel from a corner station in regards to cleanliness is dramatic. Even though there seems to be inline filters on station pumps, the storage tank will still build up a lot contamination.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #29  
Old 02-28-2014, 12:41 PM
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flyboy1963 flyboy1963 is offline
 
Join Date: Oct 2008
Location: Lake Country, B.C. Canada
Posts: 2,416
Default Fuel caddy....gotta be one that's best???

I Googled 'fuel caddy', and see a zillion different kinds, for ATV, snowmobile, marine, racing, but haven't seen one that really addresses the 'station to plane' issue.
anyone done a vehicle fuel tank-to-aircraft transfer? (I'm sure there's potential issues there as well).

N.B. what's the basket/hose coupling size on a KC-135?
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  #30  
Old 02-28-2014, 05:42 PM
NASA515 NASA515 is offline
 
Join Date: Nov 2011
Location: Hansville, Washington
Posts: 536
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Quote:
Originally Posted by rvbuilder2002 View Post
We have been using this fueling system for a few years now.
One modification I strongly recommend is to add some type of inline filtration.

Either in the pickup hose inside the tank or the nozzle hose.
n.
Roger what Scott says - I have one (which was installed by Steve Rush.)

Here's another set of mods I made - I removed the drum bung and installed a copper or brass 4 inch pipe nipple extending up from the top of the drum, with a brass cap on top. I installed the nipple into the threaded bung hole with a conductive paste (the drum is steel), and the cap with fuel proof sealant. I pressure checked the nipple and cap.

Then, I attached a brass grounding clamp secured to the barrel of the nipple.

I also ran a ground wire from the nozzle to the drum grounding clamp; the fill hose is plastic. I secured the nozzle ground wire to the fill line with alternating electrical tape and zip-ties. Fuel flow through a plastic hose can generate a static charge, creating a potential between the nozzle and the drum.

During fueling, the airplane, drum, and nozzle are all grounded to a common, verified robust ground. I make sure the nozzle is riding on the filler neck.

During my Annual in April, I plan to also install an airframe grounding lug. I think the muffler/exhaust pipe are not a robust airframe ground. I am also going to check to make sure the filler neck has a good bond to the airframe.

I am a static electricity/grounding freak.

Bob Bogash
N737G
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