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?
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Thread: Shifting Efficiency on 2x10