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Gear Ratios: Misinformation at its worst.

Discussion in 'Experienced Truckers' Advice' started by Hammer166, Apr 28, 2021.

Page 18 of 19
  1. Apr 9, 2024 #171
    Hammer166

    Hammer166 Crusty Information Officer

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    That is absolutely true. But to pretend like there's a 20% horsepower loss because you're in a 20% Overdrive, merely shows that one doesn't understand the difference between horsepower and torque. Bruce is dangerous because he knows just enough to make it sound like he knows what he's talking about, kind of sort of like the best lies have a little bit of Truth.
     
    Last edited: Apr 9, 2024
    Hammer166, Apr 9, 2024
    Hammer166, Apr 9, 2024
    #171
    HoundDog7, Crude Truckin', Last Call and 1 other person Thank this.
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  3. Apr 9, 2024 #172
    Long FLD

    Long FLD Road Train Member

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    The loss of horsepower from running in OD can be made up if you run Max Mileage Catalyst in your tanks.
     
    Long FLD, Apr 9, 2024
    Long FLD, Apr 9, 2024
    #172
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  4. Apr 9, 2024 #173
    Hammer166

    Hammer166 Crusty Information Officer

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    All these comedians struggling to make ends meet and here you are passing out free jokes ! :D
     
    Hammer166, Apr 9, 2024
    Hammer166, Apr 9, 2024
    #173
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  5. Apr 10, 2024 #174
    Last Call

    Last Call Road Train Member

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    WTH your being facetious right ?
     
    Last Call, Apr 10, 2024
    Last Call, Apr 10, 2024
    #174
    Hammer166 and broke down plumber Thank this.
  7. Apr 10, 2024 #175
    Crude Truckin'

    Crude Truckin' Alien Spacecraft

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    Well another thing to point out is all the newer downsped trucks with AMTs are actually overdrive transmissions running sub-2.64 rears. Back in the 90s, running a direct drive transmission with 2.64 gears was a great setup for fuel economy. Bruce fails to recognize that technology has come a long way since then because he has a business to run and an ax to grind.
     
    Crude Truckin', Apr 10, 2024
    Crude Truckin', Apr 10, 2024
    #175
  8. Apr 10, 2024 #176
    broke down plumber

    broke down plumber Road Train Member

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    So what's an ideal gear ratio for a 13spd running van and reefer if you're usually running 70-80K ? Prob a question with a thousand answers but the oldheads know what works for them .
     
    broke down plumber, Apr 10, 2024
    broke down plumber, Apr 10, 2024
    #176
  9. Apr 10, 2024 #177
    Hammer166

    Hammer166 Crusty Information Officer

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    Back in the day (higher cruise rpm & 24.5's) 3.55 & 3.70 were the most common, with the fast guys running 3.36.

    I've been hauling cars with little bitty donut tires for so long I don't know what everyone dragging a box is running nowadays, but I'm sure it's taller than that with the lower cruise rpm and lp 22.5's the most common tire.
     
    Hammer166, Apr 10, 2024
    Hammer166, Apr 10, 2024
    #177
    Bean Jr. and broke down plumber Thank this.
  10. Apr 10, 2024 #178
    broke down plumber

    broke down plumber Road Train Member

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    yea ive seen most of the new auto 12 n 13 spds run 2.64 and 2.79 on new trucks . I was stunned to see airplane finals on semitrucks but im only familiar with 1ton trucks and the like .
     
    broke down plumber, Apr 10, 2024
    broke down plumber, Apr 10, 2024
    #178
  11. Apr 10, 2024 #179
    MACK E-6

    MACK E-6 Moderator Staff Member

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    What kind of engine?

    If you have an X-15 I’d say go with whatever has you taching around 1300 at 65-70 mph. That way you won’t have to downshift at the very sight of the slightest incline.

    Just my .02
     
    MACK E-6, Apr 10, 2024
    MACK E-6, Apr 10, 2024
    #179
    broke down plumber Thanks this.
  12. Apr 10, 2024 #180
    abyliks

    abyliks Road Train Member

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    3.36-3.90 depending on rubber size and engine
     
    abyliks, Apr 10, 2024
    abyliks, Apr 10, 2024
    #180
    broke down plumber Thanks this.
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