Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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A 5% or so difference at the low end isn't that noticeable if the higher one is low enough, but will give you a bit more breathing room when you need it.
Most road bikes are set up with 5-7% jumps toward the high end giving you the ability to fine tune your cadence and pedal effort where you do most of the riding. But as we move toward the low end the jumps are usually closer to 10%, since in those gears cadence isn't the issue, just leverage and torque.
So figure the 5% difference as being about 1/2 of a typical low end gear step.
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