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Thread: Straight truck shifting.

  1. #1
    coolbreeze is offline Rookie coolbreeze is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    Default Straight truck shifting.

    I know most of you drive combos but would like to know if there is any double clutching on straight trucks as well?
    Would they ask you to do this on the CDL B exam possibly?
    I'm assuming most of these straight trucks are 6 speeds so I wasnt sure.

  2. #2
    DBE022576 is offline Rookie DBE022576 is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    All of the class B straight trucks that I have driven (Freightliners, Intl, GMC) have had a 6-spd in them. They didn't require double clutching. I know a guy who runs for an expeditor (Class B) but he has a 9-spd in his freightliner and has to double clutch. So I guess it depends on the truck and tranny.

    Doug

  3. #3
    Mackman's Avatar
    Mackman is offline Senior Board Member Mackman is a distinguished poster and probably helps little old ladies across the street. Mackman is a distinguished poster and probably helps little old ladies across the street. Mackman is a distinguished poster and probably helps little old ladies across the street. Mackman is a distinguished poster and probably helps little old ladies across the street.
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    any Tandem (10 wheeler) or bigger uselly has a big trans like 10,13,18speed. so it is the same thing as a T/T.
    Truck Driving an occupation consisting of hours of boredom interrupted by sheer terror!!

    "All the coolie carriers suck. Log 70, work 80-100, paid for 50." - the Great ColdFrostyMug



  4. #4
    bikerboy is offline Board Regular bikerboy is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    All dump trucks will have at least a 8 or 9 speed heavy duty truck transmission.
    Alot of them have 15 or 18 speeds too.
    They may be class B, but alot of dump trucks haul more weight than alot of tractor trailers.
    I gross out at about 85 000 lbs with my tri-axle dump truck.

    Most of those 6 speed trucks are junk, they shift like crap. i would take a 9 or 10 speed any day over a crappy 6 or 7 speed light duty peice of crap.

  5. #5
    PackRatTDI is offline Senior Board Member PackRatTDI is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    Default Re: Straight truck shifting.

    Quote Originally Posted by coolbreeze
    I know most of you drive combos but would like to know if there is any double clutching on straight trucks as well?
    Would they ask you to do this on the CDL B exam possibly?
    I'm assuming most of these straight trucks are 6 speeds so I wasnt sure.
    If it's based on a medium duty chassis (Freightliner FL70, International 4000, GMC TopKick, etc), the transmissions are generally syncronized.
    You can take the driver out of the truck but you cant take the truck out of the driver.

  6. #6
    Mackman's Avatar
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    Quote Originally Posted by bikerboy
    I gross out at about 85 000 lbs with my tri-axle dump truck.
    Kind i ask what state this is in that you can gross 85k on a tri axle :?:
    Truck Driving an occupation consisting of hours of boredom interrupted by sheer terror!!

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  7. #7
    bikerboy is offline Board Regular bikerboy is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    Quote Originally Posted by Mackman
    Quote Originally Posted by bikerboy
    I gross out at about 85 000 lbs with my tri-axle dump truck.
    Kind i ask what state this is in that you can gross 85k on a tri axle :?:
    Sorry i guess it's really closer to 77 000 lbs on a tri axle in ontario canada.
    or about 35 000 kg

    but if you got your axles spaced right i think it might be possible to be legal for 86 000 lbs, 20 on front axle, 20 on lift and 46 on rears.

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