Shortest Wheelbase For Tandem Tractor?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by BJW27, Mar 30, 2019.

  1. BJW27

    BJW27 Bobtail Member

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    Jan 8, 2014
    West Creek, NJ
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    Thanks for your input. I've considered building an L10 or mechanical M11 and having it ready for whenever the day comes. The rest of the driveline I feel is spec'd proper enough to handle a GCWR of around 73K. There probably would be some surprises though putting more stress on the existing components. Thanks again for your input.
     
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  3. BJW27

    BJW27 Bobtail Member

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    Jan 8, 2014
    West Creek, NJ
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    Thanks for your insight and reminiscings. There's quite a lot of advantages to just running in state, if you can make it work for you. The old days are certainly getting further and further in the rearview everyday... thanks again and be well sir.
     
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  4. BJW27

    BJW27 Bobtail Member

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    Jan 8, 2014
    West Creek, NJ
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    I probably should just leave it be lol. I'm exploring my options though. Thanks for the input.
     
  5. x1Heavy

    x1Heavy Road Train Member

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    Maryland is not a difficult state to do business. Not what with all the rich novous power heads around DC and so on. Ugh. They pretty much priced themselves to the point that emigration was necessary to have a good life here in the south with a home, land and free and clear etc.
     
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  6. BoxCarKidd

    BoxCarKidd Road Train Member

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    Wheel base on a single axle is measured center of front axle ( Spindle ) to the center of the rear axle.
    The wheel base on a tandem is measured from the the center of the front axle to the center of the tandems. The shortest I recall were 9670 tandems at 155". Bobtail in the rain they were not to far from the kids sit and spin toy.
    When you get into all those modifications you will be much better off spending that time shopping for what you want. That engine is great but way under powered for the job. Just my opinion.
     
    spsauerland, 062 and BJW27 Thank this.
  7. BJW27

    BJW27 Bobtail Member

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    Jan 8, 2014
    West Creek, NJ
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    Thanks a lot for that info. It's what I'm looking for. I appreciate it. Though I wouldn't be running heavy all that much, I do realize the limitations of the engine. Thanks so much for your insight and input.
     
  8. BoxCarKidd

    BoxCarKidd Road Train Member

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    Has anyone seen an M11 mechanical in a truck?
     
  9. spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Best to read up on your states bridge law if dead set on adding axle. Used to be adding 20K tag axle with frame extension would increase your WB was the way to go. I have never seen a mechanical M11 in a truck either, only Celect versions. Seen plenty of L10's that were mechanical or electronic.
     
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  10. BoxCarKidd

    BoxCarKidd Road Train Member

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    Air bag tag on the back was the way to go in the day.
     
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  11. Dino soar

    Dino soar Road Train Member

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    2 things

    1) Check state laws on modifying truck/ gvw/ adding axles

    2) Check your state's bridge formula. I don't know about a short tractor, but you need a certain bridge between your axles

    Also, a longer wheelbase gives more stability with a dump trailer and live axles would help also for traction.

     
    spsauerland Thanks this.
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