40x18 vs 32x16?- Mtbr.com
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Thread: 40x18 vs 32x16?

  1. #1
    mtbr member
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    40x18 vs 32x16?

    Used to ride my 29er as a 32x16, was a almost perfect ratio for me, decided to ride and race on gears and got 2x9 setup with a rotor 40/27 crankset, its good but I prefer SS, so now if I want to use my rotor crankset still, how would a 40(rotor ring as posted in this thread - http://forums.mtbr.com/showthread.php?t=631483) with 18 in the back compare to my previous 32x16 setup. I realize it will be a little harder on climbs but would it be a major difference?

  2. #2
    Mtbr Forum Sponsor - Homebrewed Components
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    yea, that's about a two tooth drop in the back (so it'd be like running a 32x14, but just a very small amount easier). You'd want a 20 on the rear if you want to ride what you had.

  3. #3
    smell the saddle...
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    Rabbit, a singlespeed and fixed-gear cycling calculator.

    I find this applet calculator pretty handy for wheel size/ratio comparisons:

    http://software.bareknucklebrigade.c...it.applet.html

  4. #4
    Monkey Junkie
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    As ISAR said, a 2 teeth difference in the back will be significant. Get a 20T cog for the back. A 2:1 ratio on a 29er is pretty impressive.

  5. #5
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    Disassmbled a couple of old cassettes, closest I have is a 21, suppose a 1 teeth difference is better than 2.

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