Yahoo! Services

Make Y! My Home Page

Account Options

New User? Sign Up Sign In Help

Yahoo! Search

Image: How Mountain Bikes Work

15 Votes

Avatar for katieelambert1012

First Buzzed By: katieelambert1012

How Mountain Bikes Work

Submitted: Jun 23, 2008 - If you've been on a biking trail in the last few years, you've probably seen all kinds of crazy-looking bikes.

Mountain bikes just keep accumulating more gears. Today, some bikes have as many as 27 gear ratios. Mountain bikes use a combination of three different-sized sprockets in front and nine in back to produce these gear ratios.

» Full Story on HowStuffWorks