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  1. #1

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    Fuel line setups

    Im now into planes where the Engines are completely covered making it difficult to pull fuel lines to refuel. Would you guys know where I can find diagrams to use as reference showing 3 line setups etc.? I want to make sure i get it right the first time .


    Thanks

  2. #2
    RCU Forum Manager/Admin RCKen's Avatar
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    RE: Fuel line setups


    ORIGINAL: ro347

    Im now into planes where the Engines are completely covered making it difficult to pull fuel lines to refuel. Would you guys know where I can find diagrams to use as reference showing 3 line setups etc.? I want to make sure i get it right the first time .


    Thanks

    Here ya go.

    Ken
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    The take off is optional, but the landing is MANDATORY!!
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  3. #3
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    RE: Fuel line setups

    I'm a big fan of the Dubro Fill It fueling system:

    http://www3.towerhobbies.com/cgi-bin...?&I=LXAHE1&P=7

    It allows you to add a third line and second clunk to your tank so you can fill and empty your tank through it without having to get to the carburator line.
    Electric RC planes are like non-alcoholic beer, they are OK in a pinch if the real thing is not available.

  4. #4
    RCU Forum Manager/Admin RCKen's Avatar
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    RE: Fuel line setups

    If the hardware is available to add a second clunk like Ed metnioned that is better. The Dubro system is great in that it gives you what is needed to add a second clunk. If not the setup I shown above works well. Have the third line pointed towards the bottom of the tank, and then you can tip up the plane to pump the fuel out of the tank.

    Ken
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  5. #5

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    RE: Fuel line setups

    Thanks guys

  6. #6

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    RE: Fuel line setups

    Another good option.....

    [link]http://www3.towerhobbies.com/cgi-bin/WTI0095P?FVSEARCH=S750[/link]

    Alex

  7. #7
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    RE: Fuel line setups

    Even better option:

    Click me!

    With these you can even do "pinch tests" without needed to remove the cowl nor access any of the tubing.

    Click on Fuel Filler on the above link.
    There is an art . . . to flying. The knack lies in learning how to throw yourself at the ground and miss.

  8. #8
    Osirisf16's Avatar
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    RE: Fuel line setups

    Sorry man, but your link doesn't work.[:-]
    Kyosho Evolva M3 - OS VZR / Hyper 8 - OS Vspec / Baja 5b / Kyosho MP777 SP1 - OS Vspec
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  9. #9
    opjose's Avatar
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    RE: Fuel line setups

    Fixed try again.

    There is an art . . . to flying. The knack lies in learning how to throw yourself at the ground and miss.

  10. #10
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    RE: Fuel line setups

    This may better illustrate the system oppose is talking about. its a simple two line system just like a trainer no third line, fuel dot or fueling device needed and it allows pinch tunning:

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    \"Keep your controllines tight\"

  11. #11

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    RE: Fuel line setups

    what exactly is a fuel dot?
    buy em & build em

  12. #12

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    RE: Fuel line setups


  13. #13
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    RE: Fuel line setups


    ORIGINAL: Mikeis45

    what exactly is a fuel dot?
    Fuel Dots are essentially plugs for fuel lines that are most often used during fueling / refueling / emptying the tank. In Ken's picture above the bottom line would have a fuel dot, or plug, inserted during the running of the engine.

  14. #14

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    RE: Fuel line setups

    how does one use the above setup and fuel the plane, without overflowing fuel in to the muffler?

  15. #15
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    RE: Fuel line setups

    Hi snurckle. If you are talking about the two line system that I pictured in post #10 and Opjose has shown a neat device for then The answer to your question depends on the engine mounting orientation and muffler type.

    If the engine is mounted sideways then the cylinder head in on the right side and the stock muffler will protrude to the right bottom and the pressure nipple will be exposed It can be removed for fueling just like a trainer. In this set up the engine cannot be hydrolocked by some accidental flow into the muffler since it is below the chamber if you should forget.

    If the engine is fully inverted with a stock muffler or tuned pipe it will be on the right side and agine the pressure tap will be exposed In this case you must not forget to remove the pressure line or overflow will go directly to the chamber hydrolocking the engine.

    If you are using any form of completely inaccessable muffler or some type of Pitts then the pressure line is passed out and in the cowl just like the feed line and also provided with a split so it is easily separated just like the feed line to check your overflow just like a trainer. It can be on either side of the cowl.

    This is the most trouble free fueling system possible and yes its just my opinion. I use it on everything even on exposed engines with rear needle valves.


    John
    \"Keep your controllines tight\"

  16. #16

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    RE: Fuel line setups

    Interesting. My current build is a TF Corsair, with an RCV 120 SP 4 stroke. I was thinking about this after my previous post, and think I have a good solution, that is both clean, and fairly simple.

    I'm planning on installing a refueler valve assy Dubro Refueling Valve

    I will now be installing 2 of them. One for the fueling line, and one for the pressure line. The valve stops flow when the kwik fueling probe is inserted, so that it can only go in one direction. So, by installing both 'nozzles' you can fill with one, and catch overflow with the other, and alleviates the need to disconnect from the muffler, which I will not have access to once the cowl is installed.


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