Road Bike Gear Ratio

We can estimate that froome spent most of his time using a 38x21 gear ratio.

Road bike gear ratio. Gear ratio change after shifting from big to the small chainring is so large that it requires at least two more shifts on the rear to achieve a similar a bit shorter gear ratio. How to choose the right gear ratios for your road bike gear ratios can make or break your ride so choosing the right ones for you is vital to getting the most out of cycling. What does this show. In contrast 39 x 25t produces a gear ratio of 1 56.

With all of the options available to today s road cyclists it is possible to produce gear ratios that are as small as. After 50 24 combination shifting to 34 19 or even 34 17 is required in order to not make a gear ratio change too large. Even if you have a bike with a standard front chainset 53 39 and rear cassette of 25 which gives you a lowest gear ratio of 39 25 1 56 you could achieve a similar gear ratio to a bike with a compact chainset 50 34 with a rear cassette of 25 ratio of 1 36 by switching your rear cassette to a 29 tooth lowest gear ratio of 39 29 giving a ratio of 1 34. When the road starts.

For each pedal stroke the rear wheel turns 0 73 times. Colors group similar values. The lowest gear ratio on the bike might be a front chain wheel with 22 teeth and a rear gear having 30 teeth. That means that the gear ratio is 0 73 to 1.

A bike with 30 or more gears is not an indication of a machine designed to break the land speed record any more than a bike with only a single gear assuming similar ratios. Similarly if you are growing in strength it might be time to spec larger gears to your bike.