Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: Need info on gear ratios

  1. goaljnky

    goaljnky New Member

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    #5 goaljnky, Oct 21, 2010
    Around here the speed limit is 65 in town, so I couldn't tell you. :devil:
     
  2. WolfGTI

    WolfGTI Active Member

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    #7 WolfGTI, Oct 22, 2010
    Correct - the higher the gear ratio numerically - the lower or shorter the gear is = faster acceleration, more rpm for same mph.

    The lower the gear ratio numerically - the higher or taller the gear is - less acceleration, less rpm for the same mph.
     
  3. Dr Obnxs

    Dr Obnxs New Member

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    #9 Dr Obnxs, Oct 22, 2010
    A while ago..

    I started building a drag race simulator. It was a very simple one, but it was very illustrative for some items, including the difference in the gear sets.

    Here's something I wrote about the endevour.

    Matt
     

    Attached Files:

  4. goaljnky

    goaljnky New Member

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    #2 goaljnky, Oct 21, 2010
    I think FES have the info on their web site. Or you can download their free shift light software and I am pretty sure that's in there.
     
  5. Nathan

    Nathan Founder

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    #3 Nathan, Oct 21, 2010
    I just created a new article in the Library for the 1st gen gear ratios.

    See 1st Gen Gear Ratios
     
  6. jiminni

    jiminni Well-Known Member

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    #4 jiminni, Oct 21, 2010
    Awesome! Thanks Nathen :cornut: Now being a novice about this stuff, the higher the gearing the fast it spools up correct? I see all the 05> ratios are higher, really different in 1st and gets closer in each successive gear. In 6th it is still a little higher, but close. So it would seem this could make a significant difference in our cars, as in quickness, no? But seems to be a little less overdrive once you get into 6th, which would be kind of a bummer as my car already is hitting 3000 RPM by 70mph. Anyone with a 05> know the RPM's you are hitting at 70?
     
  7. Doggybags

    Doggybags New Member

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    #6 Doggybags, Oct 22, 2010
    About the same @ 70 +/- 3k. A little less maybe. @ 90 its about 3,900. It used to be right at 4k fully stock once upon a time.
     
  8. jiminni

    jiminni Well-Known Member

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    #8 jiminni, Oct 22, 2010
    Thanks guys :Thumbsup:
     
  9. jiminni

    jiminni Well-Known Member

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    #10 jiminni, Oct 23, 2010
    Interesting stuff Matt. Page 4, about the two different tranny's, I kinda understand it. From what I can gleen is that 1-2 could make a substantial difference in acceleration, correct? The point of my thread is to see if it is worth it for me to pursue buying a used 05> tranny. :Thumbsup:
     
  10. xalfa

    xalfa New Member

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    #11 xalfa, Oct 23, 2010
    Seems like moving to the later box would be a trade off. You get higher ratios, but they are skewed to the lower gears and spaced more widely down low. The gaps from 3>4>5>6 are about the same between the two, but the early box has significantly closer ratios 1>2>3. So the early box is more of a "close ratio" set up than the later.

    At just under 200whp, not sure I'd want shorter gearing down low. I have enough trouble maintaining traction powering out of 2nd gear turns as it is, so I don't think more torque would be helpful. And I definitely don't like the idea of bigger gaps between the lower gears, especially 2>3.

    But in a stock R53 the extra grunt down low might be nice to have around town and will shave a couple of tenths on 0-60 times, if that's what you're into. I'm more of a 20-80 guy myself... :cool:
     
  11. Dr Obnxs

    Dr Obnxs New Member

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    #12 Dr Obnxs, Oct 23, 2010
    you hit the nail on the head...

    the later box makes the car much more lively in 1st and 2nd, that's for sure. I also think it will give you some advantage in the quarter mile as well.

    Since red-line in 2nd is about 70 mph, it's a winner for most real world driving situations. But with the power adders that are out there now, that weren't really there when the cars were newer, traction can be a problem.

    It's a cat that can be skinned many a way!

    Matt
     
  12. jiminni

    jiminni Well-Known Member

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    #13 jiminni, Oct 26, 2010
    Well went ahead and purchased a 05 tranny :crazy: I think I'll end up keeping this car forever.....will never get all that's in it :lol: Now I need a clutch and flywheel.... any suggestions? Plus I got a good suggestion from Lynn about which LSD I will be using :Thumbsup:
     
  13. Bster13

    Bster13 New Member

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    #14 Bster13, Jan 10, 2014
    I don't think I'll have 250hp, but I think I should get north of 200 at the wheel pretty easily with a good tune and basic bolt-ons with my R56.

    I don't understand gear ratios, but I find this for the 2007 MCS:
    https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&ved=0CDMQFjAB&url=http%3A%2F%2Fmotoringfile.com%2Ffiles%2F2007_MINI_Technical_Specs.pdf&ei=wInQUr3_K8mrsASd5YDwCw&usg=AFQjCNEXK_9DqSnrfvGMLZyjv7goQmwX6w&sig2=evD3x9kuVcYyBQv95atGkQ&bvm=bv.59026428,d.cWc

    And this for the R53:
    MINI Motoring: MCS Gear Ratios & Top Speeds

    I'm not sure how to convert from one to the other.
     
  14. jiminni

    jiminni Well-Known Member

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    #15 jiminni, Jan 11, 2014
    :confused5: The R53 and R56 gearboxes are not compatible, if that's what your wondering?
     
  15. Bster13

    Bster13 New Member

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    #16 Bster13, Jan 11, 2014
    1st Gear for the R53 is listed as:
    12.789

    1st Gear for the R56 is listed as:
    3.308

    Something doesn't seem right, or I'm not reading the links correctly.

     
  16. jiminni

    jiminni Well-Known Member

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    #17 jiminni, Jan 11, 2014
    Well.....it's correct for the R53.....here is what they have on this forum:

    1st Gen Gear Ratios - Manual Transmission Article Options
    10-21-2010 12:52 PM
    Nathan

    Category: All About MINI Coopers
    Views: 1,426

    The 1st generation MINI had two different gear ratios for manual transmissions.

    The split is with the June 2004 build cars. Those built up and including June 2004 are in the first Gear Ratio column, July 2004 to the end of 1st generation MINIs are in the second Gear Ratio column.


    Gear Ratio <= 7/04 Ratio >= 7/04
    1 11.425 12.789
    2 7.181 7.793
    3 5.397 5.651
    4 4.407 4.615
    5 3.656 3.828
    6 2.986 3.126
    R 11.13 11.944

    Converted


    Read more: 1st Gen Gear Ratios - Manual Transmission - Library
     
  17. Nathan

    Nathan Founder

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    #18 Nathan, Jan 11, 2014
  18. ChItalian1027

    ChItalian1027 Member

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    #19 ChItalian1027, Feb 6, 2014
    Didn't think that the gear ratios for the R53 would be this high. I think I'm going to get an LSD.
     
  19. Bster13

    Bster13 New Member

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    #20 Bster13, Feb 6, 2014
    @Nathan, that was the document I was originally referencing... I could expect the ratios being a bit off, but they are MILES off.

    @ChItalian1027, why do the given gear ratios affect getting or not getting an LSD?
     
  20. ChItalian1027

    ChItalian1027 Member

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    #21 ChItalian1027, Feb 6, 2014
    In my BMW e36 the LSD changes the RPM at cruising. So lets say I'm doing about highway speeds, without the LSD in I would be doing about 3-3500rpm. With the LSD, in my car it is a 3.30 gear, which lowered my RPM at highway speeds from 3-3500rpm to 2-2500rpm. In the case of the MINI, if I were to put an LSD that was geared as a 3.30 the rpm at highway speed would be lowered. Differentials, have no effect on the transmission gearing.