Question about gears- Mtbr.com
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  1. #1
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    Question about gears

    What is the difference between a 32/16 and a 22/11 ? (other than the tooth count)
    Are there pro's of going with a larger diameter drive train?
    I got a ghetto convert for 40 bucks and have been having fun riding around parts of NorCal on it. Itís using the small front ring and a small 11 tooth on the back.
    Do you get better leverage? Easier on the chain having the stress across a larger area?
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  2. #2
    fresh fish in stock...... SuperModerator
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    you get better clearance over logs...but you chain will wear faster...

    someone else smarter can explain it...

    or correct me.
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  3. #3
    aka baycat
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    Nick is right for once.

  4. #4
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    Cool, I just wanted to avoid extra chain exploding testicle crushing incidents. Sounds like I can just expect the normal amount.
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  5. #5
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    For a given gear ratio, the setup with a larger front ring will be easier to pedal. 32x16 will be slightly easier to turn over than 24x12. The micro drive setup will wear faster and be harder to tension perfectly, but it will be lighter and have better ground clearance.

  6. #6
    The need for singlespeed
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    Quote Originally Posted by Clivus View Post
    32x16 will be slightly easier to turn over than 24x12.
    Huh?

  7. #7
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    Quote Originally Posted by Buzkil View Post
    Do you get better leverage?
    No
    Easier on the chain having the stress across a larger area?
    Yes.

    Surly explained it very clearly
    Ride more!

  8. #8
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    Quote Originally Posted by zaskaranddriver View Post
    Huh?
    What he said.

    The OP's two ratios give the exact same gear inches and development, so to the rider those ratios will be identical. You can punch the numbers in yourself here:
    Rabbit, a singlespeed and fixed-gear cycling calculator

  9. #9
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    Quote Originally Posted by asphaltdude View Post
    agree here... anything that is a 15 or smaller I have read is hard on chains, that is why most are 16 or larger on the rear...

    Q

  10. #10
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    sweeeeet

    Iíll stick with what I got for now, the bike is a rigid Rockhopper from early 90's so I would rather not put oodles of money into it. I got this one for 40 bucks to see if I liked riding SS, and I do. Saving my pennies to build up a new SS that has a little cushion up front. It seems like I still like to ride fast downhill , and the rigidity is making my teeth chatter.
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  11. #11
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    32x16 will be easier to pedal than 22x11 despite the fact that they are the same ratio. The reason for this has to do with the length of the lever you are using to move the chain. With a 32t chainring the chain lies further from the bottom bracket spindle giving you more leverage with which to rotate it. The same idea applies when considering crank arm length.

  12. #12
    The need for singlespeed
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    No, dude. Check your physics.

  13. #13
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    Quote Originally Posted by Clivus View Post
    32x16 will be easier to pedal than 22x11 despite the fact that they are the same ratio. The reason for this has to do with the length of the lever you are using to move the chain. With a 32t chainring the chain lies further from the bottom bracket spindle giving you more leverage with which to rotate it. The same idea applies when considering crank arm length.
    Zaskaranddriver has it right. The size of the front by itself doesn't matter, it's about its ratio to the rear.

  14. #14
    EXORCIZE
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    This gear ratio argument is a joke, right???

    A difference not yet mentioned: the larger the chainring/cog, the "smoother" the transmission will feel (less clunky because the chain will be bending less) and, similarly, the less likely the chain will be to come offf.

  15. #15
    (Ali)
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    Another way to look at it: since the distances traveled per pedal revolutions are equal for the two gear setups, the works are equal.

    Neither setup has energy input or loss compared to the other, so they require the same energy for that work. The exception is the arguably immesurable difference of wrapping the chain more vs. less around the different sized rings and cogs, but since the chain is willing to wrap even by itself, I can't imagine a difference there.

    Ali

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