DT12 Transmission AG uses?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by wauto, Jan 23, 2021.

  1. wauto

    wauto Bobtail Member

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    Jan 22, 2021
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    Looking at buying a Cascadia with a dd13 and a dt12 transmission. I've been trucking for 30 plus years and am now partially handicapped. My question is. Does anybody have "real world" experience, pulling a loaded hopper trailer out of a field using this transmission? Also it's a direct drive dd12 with a 2.47 rear ratio.
     
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  3. Hye

    Hye Bobtail Member

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    Jan 23, 2021
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    loaded hopper with Dd13 ? ))))
    you need a truck with dd16 engine and big rears(Meritor only)...
     
  4. AModelCat

    AModelCat Road Train Member

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    DD16? That's a little overkill unless he's pulling a super b.

    The 2.47 rear ratio would be what would make me pass. Not a good ratio for heavy loads on soft ground IMO.
     
  5. uncleal13

    uncleal13 Road Train Member

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    Not Freightliner, but our fleet had Volvos with iShift, pretty much has same first gear ratio of 11.78 and 3.42 rears. They couldn’t launch 140,000 lbs out of a soft field without getting a push. The newer ones with the crawler gear work good. The new Detroit HD transmission has better gearing.
    The direct drive does have a lower 1st gear than the over drive. About 14.94
    You might be okay at 80,000 but 2.79 would be better.
    there is a formula for startability to be certain.
     
    Hye and 25(2)+2 Thank this.
  6. wauto

    wauto Bobtail Member

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    Jan 22, 2021
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    Thanks I'd be 80,000 and it's a dt12 hd. Maybe it would put up with it during harvest.
     
  7. Hye

    Hye Bobtail Member

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    Jan 23, 2021
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    What is happened to your cascadia with dd16 ultrashift ? Sold ?
     
  8. uncleal13

    uncleal13 Road Train Member

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    I still own and operate it. The company has about half o/o’s and half drivers with Volvos and some Mack Anthems.
     
    Hye Thanks this.
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