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13 vs 18 speed.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by belltransit, May 3, 2011.

Page 1 of 6
  1. May 3, 2011 #1
    belltransit

    belltransit Light Load Member

    271
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    Jun 28, 2010
    oak grove, mo
    0
    correct me if im wrong here. a 13 speed is used on 1650 ft/lbs torque motors and an 18 is used behind 1850 and 2050 ft/lbs torque motors.
     
    belltransit, May 3, 2011
    belltransit, May 3, 2011
    #1
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  3. May 3, 2011 #2
    lostNfound

    lostNfound Road Train Member

    3,506
    2,269
    Jun 28, 2007
    Home of the Stampede
    0
    lostNfound, May 3, 2011
    lostNfound, May 3, 2011
    #2
    Strider Thanks this.
  4. May 3, 2011 #3
    RoyBean

    RoyBean Bobtail Member

    22
    11
    Apr 29, 2011
    sedalia,ky
    0
    The big diffrence is that you can split the bottom five gears. Roy
     
    RoyBean, May 3, 2011
    RoyBean, May 3, 2011
    #3
  5. May 3, 2011 #4
    belltransit

    belltransit Light Load Member

    271
    27
    Jun 28, 2010
    oak grove, mo
    0
    cool. i was always wondering about the torque limit on the 13 and 18s. im goin to be buyin a newer truck and ive been seeing both 13s and 18s in the trucks.
     
    belltransit, May 3, 2011
    belltransit, May 3, 2011
    #4
  7. May 3, 2011 #5
    Gambi80

    Gambi80 Medium Load Member

    367
    92
    Jan 31, 2010
    Fried Chicken Capital of the Midwest
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    The 18sp isn't really necessary...I've got one and rarely, if ever, split the low gears. Bout the only time I do is in reverse to go that little bit faster.
     
    Gambi80, May 3, 2011
    Gambi80, May 3, 2011
    #5
  8. May 3, 2011 #6
    ProduceHauler

    ProduceHauler Light Load Member

    231
    24
    Apr 28, 2011
    California
    0
    A lot depends on rear axle gear ratio - I got 3.36 and use them gears all the time
     
    ProduceHauler, May 3, 2011
    ProduceHauler, May 3, 2011
    #6
  9. May 4, 2011 #7
    Les2

    Les2 Road Train Member

    5,150
    2,288
    Jul 25, 2008
    kicked back in my lazyboy...
    0
    And weight you pull around.

    I just found out there is actually no difference between the 1600 ft lbs and 1800 ft lbs 13 spd transmissions. The gears and bearing are the same.
     
    Les2, May 4, 2011
    Les2, May 4, 2011
    #7
    Cetane+ and 07-379Pete Thank this.
  10. May 4, 2011 #8
    07-379Pete

    07-379Pete Crusty Commando-Pete

    2,549
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    Oct 3, 2008
    Campbellsville, Ky
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    I have been trying to tell people that for some time now......note the word trying.
     
    07-379Pete, May 4, 2011
    07-379Pete, May 4, 2011
    #8
    W923 and Cetane+ Thank this.
  11. May 4, 2011 #9
    Licensed to kill

    Licensed to kill Heavy Load Member

    830
    2,435
    Dec 31, 2010
    Alberta
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    With the light loads that most seem to pull, that's true but not all trucks are running around at <90,000 lbs.
     
    Licensed to kill, May 4, 2011
    Licensed to kill, May 4, 2011
    #9
  12. May 4, 2011 #10
    Jfaulk99

    Jfaulk99 Road Train Member

    2,914
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    May 16, 2009
    Couch
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    Even with more weight most of the time splitting the lower gears is overkill. If I can pull 120k with 3.36 gears 24.5's and a 13 with no problems I can't imagine a guy with small tires or lower gears needs the 18.
     
    Jfaulk99, May 4, 2011
    Jfaulk99, May 4, 2011
    #10
    Oxbow, Yup and 07-379Pete Thank this.
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