Under trailer mounted aux fuel tank?

Discussion in 'Expediter and Hot Shot Trucking Forum' started by Xray4, Jan 2, 2021.

  1. Xray4

    Xray4 Light Load Member

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    I'm considering upgrading my truck and trailer setup to a flatbed with a step deck trailer. I am sold on diamond c. I love the trailer I have now but am ready to take it to the next level with their new step deck. That will mean that I have to remove my bed, and will not have room to clear my auxiliary fuel tank. Having this extra 90 gallons on board, putting me at 138 gallons total has been more than just convenient, practically crucial. I say at least an hour a day not having two fuel at a station once if not twice a day.

    I've looked at several different kinds of tanks trying to find a way to make it work and it's just not possible to clear the step deck and allow for trailer articulation with a tank on the bed of the truck. So that being said I'm considering mounting a tank between the frame rails on the trailer. Under the bed of the trailer. Does anyone have any true experience or hard literature that would recommend not doing this due to DOT regulations?
     
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  3. Xray4

    Xray4 Light Load Member

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  4. Hammer166

    Hammer166 Crusty Information Officer

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    The tank would be fine, millions of reefers floating around with tanks. The fuel connection to the truck would be where you'd need to do your research. FMVSS is where I'd start to search. Don't recall ever seeing anything applicable in the green book.
     
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  5. Xray4

    Xray4 Light Load Member

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    Thanks. I was thinking a standard electric fill-rite pump in a utility box plumbed to the tank, with a long hose and nozzle to reach the truck
     
  6. baha

    baha Road Train Member

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    Thats one way of doing it? Or the fuel flex line going from trailer to truck will have to have a Quick disconnect in it when you unhook trailer?
     
  7. Xray4

    Xray4 Light Load Member

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    Could probably mount close to the axles to save pin weight and run a hard line close to the front of the trailer with a quick connect for the nozzle hose, if wanted, or just put the hose and nozzle in a box up front.

    Just need to first make sure dot won't have a legitimate issue with the tank installed under the trailer between the frame rails.
     
  8. baerpath

    baerpath Bobtail Member

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    Why wouldn't you use saddle tanks on the truck ?
     
  9. Xray4

    Xray4 Light Load Member

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    I haven't seen any of that could mount under the bed, on the flatbed that would give me at least 100 gallons.

    I can't put anything on top of the flatbed of the truck because I intend on ordering a step deck trailer that eliminates any possibility of mounting on top of the bed. I need that room for clearance.
     
  10. p608

    p608 Road Train Member

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    Don't try to reinvent the wheel.
     
    24kHotshot Thanks this.
  11. Xray4

    Xray4 Light Load Member

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    Great thank you for the comment. So tell me what you would suggest if you want to carry more fuel but you cannot carry it on the truck because the flatbed must be clear for the step deck trailer.

    I look forward to your suggestion!
     
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