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Old Oct 05, 2005, 02:01 PM
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Cincinnati Cin N.Knty, Ohio, United States
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3 fuel line tank system

I am using 3 fuel lines on my tank, one for pressure, one for carb, and the other one for filling. I wasnt sure if the line I am using for filling needs a clunk on it, I dont think it would but wanna be sure. And second question about it, whats the best thing to use to close off the fueling line, a valve?
Thanks
Chris
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Old Oct 05, 2005, 03:22 PM
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Staffs, UK
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No, the clunk goes on the carb line. I just use a suitable size screw to plug the fuelling line.

Steve
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Old Oct 05, 2005, 04:14 PM
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Yes,,,, that fill line also serves as a drain too.... clunk both the carb line, and the fill/DRAIN line.... if you don't clunk the fill/DRAIN line how will you completely empty the tank? I usually make it a just a tad(1/8" maybe) shorter then the carb line and clunk it. Works fine for me.
PS... there a devices called "fuel-dots" that cleanly mount to your cowling and serve as plug devices, as well as making your line readily accessible.
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Old Oct 05, 2005, 04:25 PM
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ok thanks for the info, well I only have one clunk line and the LHS doesnt have any, I am just going to go with the fueling valve that mounts on the side of my cowl.
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Old Oct 05, 2005, 07:08 PM
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Instead of "clunking" the fill line, you can also put a short piece of flexi fuel line on it and then bend the line down towards the bottom of the tank, so that the flexi line sits on the bottom.
To close off fuel lines, Dubro has these small red "nail like" nylon stoppers that fit right into the fuel lines. As stated above, anything that will fit tight into the fuel ine will stop it off.
The other "mod" I do on most of my planes is to build a viewer window right next to the tank. I use a small piece of plexi glass. I can see, when the fuel tank is near full, and I can see how much fuel is left. Land, taxi back to me, look at the window, take off again.
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Old Oct 06, 2005, 09:13 PM
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Quote:
Originally Posted by indoruwet
Instead of "clunking" the fill line, you can also put a short piece of flexi fuel line on it and then bend the line down towards the bottom of the tank, so that the flexi line sits on the bottom.
To close off fuel lines, Dubro has these small red "nail like" nylon stoppers that fit right into the fuel lines. As stated above, anything that will fit tight into the fuel ine will stop it off.
The other "mod" I do on most of my planes is to build a viewer window right next to the tank. I use a small piece of plexi glass. I can see, when the fuel tank is near full, and I can see how much fuel is left. Land, taxi back to me, look at the window, take off again.

Neat idea, I do sort of the same thing with my 3-d profile, except that i just do a slow harrier down the runway with the tank side facing me for a quick fuel check!
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Old Oct 07, 2005, 10:27 AM
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Hmmm.. Does not work for me, excepty on the Battle Floyd I have, since the fuel tank is inside the fuse on all my other planes. Still can not see how much fuel when "in-flight". So have to pick it up, and look. Since I do that so much, I almost know exactly how long I can fly now. Also my timer on the trannie only counts when it is "off idle". So far it has been just about right, without dead sticking due to fuel shortage.
The look-see window, works really good "during fueling" (I only pinch the fuel line to the carb with a hemostat), and is a bit of a neat thing for checking "fuel left".
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