help with gear ratio, hp, etc for 3/4 car hauler

Discussion in 'Car Hauler and Auto Carrier Trucking Forum' started by goinonforty, Jan 22, 2012.

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  1. Jan 22, 2012 #1
    goinonforty

    goinonforty Bobtail Member

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    Jan 22, 2012
    wpg
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    hi i need help we are a trailer dealer and are putting our own 3/4 car hauler on the road 90% of the time loads will be cargo trailer maybe 7500lb. we are looking at a freightliner 380 hp 10 speed 3.73 ratio condo bunk single axle
    does anyone know what i should expect to get for fuel mileage

    also any other help would be appreciated
     
    goinonforty, Jan 22, 2012
    goinonforty, Jan 22, 2012
    #1
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  3. Jan 22, 2012 #2
    goinonforty

    goinonforty Bobtail Member

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    Jan 22, 2012
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    also is this the best truck for what we do
     
    goinonforty, Jan 22, 2012
    goinonforty, Jan 22, 2012
    #2
  4. Jan 22, 2012 #3
    jbatmick

    jbatmick Road Train Member

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    Depends on engine type. Mechanical or electronic ? New or old ? Flat land or hills ?
     
    jbatmick, Jan 22, 2012
    jbatmick, Jan 22, 2012
    #3
  5. Jan 22, 2012 #4
    goinonforty

    goinonforty Bobtail Member

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    Jan 22, 2012
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    its a 2004 and its a cat pretty flat in the prairies
     
    goinonforty, Jan 22, 2012
    goinonforty, Jan 22, 2012
    #4
  7. Jan 23, 2012 #5
    truckon

    truckon Swamp Thing

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    why would you use such a big truck? a one ton would pull it just fine, be better on fuel costs and allot less to maintain.
     
    Last edited: Jan 23, 2012
    truckon, Jan 23, 2012
    truckon, Jan 23, 2012
    #5
  8. Jan 23, 2012 #6
    Hammer166

    Hammer166 Crusty Information Officer

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    And that is geared way too short for the highway, unless it's got tall rubber on it.
     
    Hammer166, Jan 23, 2012
    Hammer166, Jan 23, 2012
    #6
  9. Jan 23, 2012 #7
    goinonforty

    goinonforty Bobtail Member

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    Jan 22, 2012
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    i want a truck with a real sleeper im not interested in a 1 ton what type of ratio should i be looking for

    thanks
     
    goinonforty, Jan 23, 2012
    goinonforty, Jan 23, 2012
    #7
  10. Jan 23, 2012 #8
    Hammer166

    Hammer166 Crusty Information Officer

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    ~8600+' and loving it!
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    Depends on tire size... 3.73 with LP24.5 was like 1650 at 70, or thereabouts. Eaton's website has calculators that's would give you exact numbers. With as little weight as your pulling, you wouldn't want to run that rpm, and if it's only got LP22.5 on it, it would be seriously short geared.
     
    Hammer166, Jan 23, 2012
    Hammer166, Jan 23, 2012
    #8
  11. Jan 23, 2012 #9
    goinonforty

    goinonforty Bobtail Member

    5
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    Jan 22, 2012
    wpg
    0
    thank u i appreciate the help i would buy something smaller but i think it is easier to find a driver with a real bunk
     
    goinonforty, Jan 23, 2012
    goinonforty, Jan 23, 2012
    #9
  12. Jan 24, 2012 #10
    MrFred

    MrFred Bobtail Member

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    Sep 10, 2011
    Williston , N.D
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    I don't think someone with that low of a gear ratio would use it for flat lands? :biggrin_2558:
     
    MrFred, Jan 24, 2012
    MrFred, Jan 24, 2012
    #10
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