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Thread: Aux fuel tanks

  1. #1
    Junior Member
    Join Date
    Jan 2012
    Location
    southeast , tx
    Posts
    27

    Default Aux fuel tanks

    Standard fuel is 24 gals in 2 tanks and
    With aux you have 44 gal total with only
    40 usable. Is the 4 gals the 1/2 for
    Reserve?

    1. I see that these aux tanks free flow to
    Mains. Are there any directional valve
    Between the aux and main tank?

    2. Do y'all fill aux tank and let it flow
    To main tank. Are fill each tank separate.

    Thanks.

  2. #2
    Senior Member Pete D's Avatar
    Join Date
    Jan 2010
    Location
    Yakima, WA
    Posts
    936

    Default Re: Aux fuel tanks

    The 4 gallons "unusable" is not considered the 1/2 hour reserve. Keep in mind that is worst case scenario when the outlet in the tank will come out of the fuel left. IE; that is what is estimated will be left in the tank when the engine coughs when you are doing a slipping turn.


    There is no valve between the aux and main. The dihedral of the wing puts the "aux" tanks slightly higher than the main tanks.

    If you have the big tanks option there is only one filler neck; on the "aux" tank. If you kept the filler neck on the inboard tank you would not be able to fill them full as it would come out of the inboard filler neck when you topped off the outboard one.

  3. #3
    Junior Member
    Join Date
    Jan 2012
    Location
    southeast , tx
    Posts
    27

    Default Re: Aux fuel tanks

    Understand now. Thanks

  4. #4
    Senior Member Paul's Avatar
    Join Date
    Dec 2011
    Location
    Gilbert, Arizona
    Posts
    202

    Default Re: Aux fuel tanks

    Good explanation, Pete. I was wondering about fuel transfer as well. Gravity feed makes perfect sense and keeps it simple which seems to be Cubcrafters' motto.

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