Couple of things -
First, the percentage of change. 2 teeth is a much greater percentage of change in the small cogs
Secondly,practicality as you get into steep climbs. Typically you don't really care about one-two tooth increments in the big cogs. You just need a gear, any gear.
One tooth increments are far more noticeable when you're trying to fine tune a gear selection and cadence on flat roads when you're using the smaller cogs.
And soft pedaling enough to change cogs should be easy. It's shifting chainrings that is hard.
Last edited by SadieKate; 07-02-2008 at 09:20 AM.
Reason: Editing over and over and over to make more sense of the garble.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.