looking to change my axle ratio

Discussion in 'Trucks [ Eighteen Wheelers ]' started by rank, May 30, 2014.

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  1. Oscar the KW

    Oscar the KW Going Tarpless

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    So you can then agree that if YOU had turn that drive shaft with your own hands that it would be easier to move the truck with the 3.90's in it vs the truck with the 2.64's.
     
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  3. allan5oh

    allan5oh Road Train Member

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    Exactly what I thought. You're confusing power, torque, and force which are three different subjects. You're also neglecting the overall ratio which is key especially when talking about direct drive setups.

    Follow me here son....

    2.64 X 1 (10th gear) = 2.64
    3.55 X .73 (10th gear) = 2.5915

    Actually the direct drive has MORE LEVERAGE!
     
  4. allan5oh

    allan5oh Road Train Member

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    Again neglecting OVERALL RATIO. Yes the 3.90s will have more leverage in each gear, just as much as 3.55s with an overdrive or 2.64 with a direct.

    You need to take into consideration the transmission. You will not understand the subject matter until you do. THe engine does the work on the input shaft not the driveshaft.
     
  5. Oscar the KW

    Oscar the KW Going Tarpless

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    And all you proved is that you can dodge a question when the only logical answer is one that you are afraid to give. I am not talking about transmissions here, but gears, that has been my point this entire time, I have not tried to hide behind this.
     
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  6. allan5oh

    allan5oh Road Train Member

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    That's the problem.


    You're just talking about gearing. I'm talking about the complete package.

    THE ENGINE DOES ITS WORK ON THE INPUT SHAFT, NOT THE DRIVESHAFT
     
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  7. rank

    rank Road Train Member

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    It's amazing that the 2055 rpm wouldn't generate some heat. True there are less gears turning but I don't believe increasing rpm 37% is free. Only way to avoid it is transfer the load to the pinion....or slow down.

    It snaps in two. Along with the U-joints and pinion gear LOL.

    Did we ever figure out why you can't order those tall rear gears with greaseless U-joints ?
     
  8. leftlanetruckin

    leftlanetruckin Road Train Member

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    Did I use words that are too big "Dad"?
    By all means, just like someone else, keep preaching the KR stuff all day long. The rest of us will carry on cracking up.....
    BTW, does my 13 speed have a 1:1 ratio? Yeah, I thought so. So why is it, I keep getting left by folks with deeper gearing than me, but less HP?
    There is an old proverb, as has been correctly said before, 2 ways to put more to the ground, gearing and power. Thus why 4 cylinder vehicles always have lower gearing than their 6 cylinder counterparts, with everything else being equal in the transmission world. Go look it up, some here are good at it.

    Martin
     
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  9. Superhauler

    Superhauler TEACHER OF MEN

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    WOW! it has been a fun show this weekend. hats off to rank. I enjoyed that a lot. Oscar, behave,(not) time to go back to the real world with my gearbound job! leftlane-- I don't know about you?
     
    Oscar the KW, rank and leftlanetruckin Thank this.
  10. leftlanetruckin

    leftlanetruckin Road Train Member

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    Me neither!:biggrin_2551:
     
  11. rank

    rank Road Train Member

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    LOL I felt like Joe Joe Pesci questioning that expert witness in My Cousin Vinnie. I think I asked the same question 5 different ways before I finally got an answer to the obvious. Oh well Allan is usually a pretty good guy I'll let him slide on this one. Be safe driver. Run in direct and be cool.

    I can't wait for that Richter fella to get out of the simulator.
     
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