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Fuel Tank sizing / differences

  • 06 Softail
    06 Softail
    7 years ago
    Hi there, 
    I want to research any similarities or differences there might be on Harley 1 piece fuel tanks.

    For example, is there a standard tank that fits most bikes across many years & models, including frame mounts?

    What subtle differences are there if any?

    Cheers.
  • STEAMER
    STEAMER
    7 years ago

    Softail FXST is 18.93 lt,  The tourers are 22 lt.

     I have been told the Dynas are 18.6lt ( or near)

  • FONTANA302
    FONTANA302
    7 years ago
    There are 2 size Dyna tanks for the late models:
    FXDL, FXDB, FXDWG - 17.26 litres
    FXDC, FXDF, FLD - 18.77 litres

    I can't tell them apart on the bike.  I put the bigger tank on my Street Bob for a bit more fuel range when I went to the 120R.  

    Note: there is a different top plate on the bigger tank (i.e. the plate for accessing the fuel pump) that needs to be modified by bending the mounting tabs for holding down the instruments to fit the FXDB speedo/nacelle.
  • fatbat
    fatbat
    7 years ago
    I don't think all dynas have the same tank. For example a fat bob has a bigger tank than a low rider. I think there might be two dyna tanks used across the difference dyna models 
    Just saw above post which confirms this 
  • 06 Softail
    06 Softail
    7 years ago
    Hi guys, I'm not actually interested in fuel capacity or what's on top of the tanks etc. 
    What I'm really interested in knowing is do most tanks share the same front and rear mounts and positioning to the bike frame?

    Like how the tank is connected to the backbone?

    More so because I have designed a free standing apparatus to hold fuel tanks for painting & sanding purposes.

    Cheers.
  • FONTANA302
    FONTANA302
    7 years ago
    Mounting tabs & positioning on the frame are the same for the dyna tanks I mentioned.  I've interchanged the tanks on my street bob as stated.
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