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Thread: Fuel system schematic?

  1. #1
    Junior Member
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    Default Fuel system schematic?

    Can someone please point me to a fuel system schematic for the FX-3 or EX-3. I'd like to have sufficient detail to understand the function and routing of each line in the fuel system.

    Thanks,
    Andy

  2. #2
    Junior Member
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    Default Re: Fuel system schematic?

    I may have it figured out thanks to the detailed fuel line photos shown in this thread -

    http://forum.cubcrafters.com/showthr...stem#post22125

    If my rough sketch is correct then the aft fuselage drain only services the right wing tanks and the forward drain only services the left wing tanks. Gas collator drain of course services both wings depending on tank selection.

    Is that correct?

    Thanks,
    Andy

  3. #3
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    Default Re: Fuel system schematic?

    Andy,

    Here are a couple of drawing that I think will show you how the lines run. You are correct in that the right tank goes to the aft low point drain and the left to the forward. The gasolator is connected to the output of the fuel selector so it is getting fuel only from the selected tank.


    BC03EDEE-8C79-4CD2-B061-AE964C1A27B1.jpg


    6D308144-EF37-4C71-AEBC-58797AB7FC99.jpg



    Quote Originally Posted by Andy View Post
    I may have it figured out thanks to the detailed fuel line photos shown in this thread -

    http://forum.cubcrafters.com/showthr...stem#post22125

    If my rough sketch is correct then the aft fuselage drain only services the right wing tanks and the forward drain only services the left wing tanks. Gas collator drain of course services both wings depending on tank selection.

    Is that correct?

    Thanks,
    Andy
    Dave Embry
    "You only live once.......but if you do it right.........once is enough."..

  4. #4
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    Default Re: Fuel system schematic?

    Dave,

    Thanks for the confirmation and for the photos in your EX-3 build thread(s).

    After I had posted I found a fuel system schematic in the CC11-160 maintenance manual. It seems to be similar to the EX-3 and FX-3 (no primer or carb on injected engines) but it does not indicate which drain is forward and which is aft.

    I would consider it essential that any pilot knows the function of each drain on their aircraft. Looks like I'll have to create my own fuel system drawing for my FX-3 manual.

    Andy
    Attached Images Attached Images
    Last edited by Andy; 03-23-2020 at 07:09 PM.

  5. #5
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    Default Re: Fuel system schematic?

    Required reading for those wanting to understand the fuel system?

    http://legacy.cubcrafters.com/techni...tions/100/view


    Andy

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