Okay, I have to confess I simply and completely don't understand bicycle gears. I know only enough to shift up or down when the going gets harder or easier. That's it. I also now realize that I rarely shift the left shifter. It's always on the so-called toughest ring. As I write this from my hotel I can't even remember if that's the big ring or the small ring! See? I am clueless!
Can someone explain the numbers to me in such a way that a 12 year old could understand -- or give me a link where there is such an explanation? And -- is there a difference between my basic MTB gearing and a road bike (or hybrid, for that matter) gearing? Of course there must be, but howso?
Now you can see why I didn't go into any profession that involves numbers. My eyes just glaze over.
So -- bicycle gearing for dummies -- anyone care to help me out here?