Confused about gear ratio!!!- Mtbr.com
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  1. #1
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    Confused about gear ratio!!!

    Right now I am running 38/18 with 170mm cranks. Here is the problem. Just cruising around it is great. But when I go trail riding in the muddy areas and loose soil areas it is way to hard to pedal. I would like to keep the 38 and change the rear what would be a better in the rear 16 or 14 or do I need to go up like 20 or more?

  2. #2
    Bananas...mmm
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    To simplify, the larger the rear cog or the smaller the front ring, the easier to pedal. Sounds like you need to get a larger rear cog (19T would give you a 2:1 ratio, but you'll likely need something bigger).
    Work to live, don't live to work...

  3. #3
    Bite Me.
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    yes - you need to go bigger in the back to get more climbing juice. With a 38 up front, I'd suggest at least a 20 if you're doing anything relatively steep - I run a 32 - 20 for the terrain here in Western Colo., but that can be some pretty hairy ascending (and I don't like suffering much )
    When I see an adult on a bicycle, I do not despair for the future of the human race. ~H.G. Wells

  4. #4
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    I run a 32/19 and it gets me through the Virginia mud just fine. I often think about doing a larger chain ring, then I realize I only have one speed. I am a little slower on flat ground but hills and mud come a lot easier.
    '05 Salsa DosNiner Singlespeed
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  5. #5
    Turner Homer
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    Quote Originally Posted by spin02
    I run a 32/19 and it gets me through the Virginia mud just fine. I often think about doing a larger chain ring, then I realize I only have one speed. I am a little slower on flat ground but hills and mud come a lot easier.
    I myslef run 32/16, and this is in tight technical and hilly northeast single track. I like this gearing, becasue it is not too hard, but at times in deep snow or mud, it could be pretty tiring.
    DAVE

  6. #6
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    are you running 26 or 29, that makes a big difference, i run 32x18 on 26 and 32x20 on my 29er. i ride in montana and it is pretty steep and hilly but that works pretty well, 2 to 1 is a little much here but i know some people run it. you can check gear inches on sheldon browns web site.

  7. #7
    moe.
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    I ride 32:20 but am getting ready to experiment.

    I ride 32:20 on my 29er out here in the California desert. We have some long sustained steep climbs for our winter riding so I am looking forward to trying the 21t and 22t. When I ride in higher elevations around here I can probably go 32:19. I just ordered a 21t, 22t and 19t to play around with. I have used my 18t around town and spin out too much. I have a 16t and 14t I have never even tried out and should probably sell.
    "These people take a dump thatís a bigger difference than the a 5 Spot and a Blur LTc." DT

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