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  1. #1
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    Shifting Efficiency on 2x10

    Hi.

    I'm building up my next bike and am stuck on 2x10 vs 3x10. I'm currently running 3x10 with 26-36-48 with 11-34. I practically never use my big ring so I'm interested in the idea of getting rid of something I don't need and instead going with the 2x10 (26-38 and 11-36).

    However, I wonder about the shifting efficiency of the 2x10. I ride trails with a lot of quick ups and downs with a need to decend and bottom out in a big gear and then hit the up with a lower gear. I usually keep the chain on the same cog on the cassette and drop down from middle to granny in the front to quickly get from a higher to lower gear in one shift.

    However, on the 2x10, I think that to accomplish the same thing I'd need to shift up in the rear several times, which doesn't seem as efficient.

    Or am I approaching this the wrong way?

  2. #2
    Nouveau Retrogrouch SuperModerator
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    Shifting Efficiency on 2x10

    Quote Originally Posted by moldau94 View Post
    Hi.

    I'm building up my next bike and am stuck on 2x10 vs 3x10. I'm currently running 3x10 with 26-36-48 with 11-34. I practically never use my big ring so I'm interested in the idea of getting rid of something I don't need and instead going with the 2x10 (26-38 and 11-36).

    However, I wonder about the shifting efficiency of the 2x10. I ride trails with a lot of quick ups and downs with a need to decend and bottom out in a big gear and then hit the up with a lower gear. I usually keep the chain on the same cog on the cassette and drop down from middle to granny in the front to quickly get from a higher to lower gear in one shift.

    However, on the 2x10, I think that to accomplish the same thing I'd need to shift up in the rear several times, which doesn't seem as efficient.

    Or am I approaching this the wrong way?
    There is no difference in shifting between inner and middle rings of a triple and the small and large ring of a double.

    If you think the 36 vs 38t rings would be too much change just replace your current outer ring with a bash and be done with it.
    mtbtires.com
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