Road Bike Gear Ratios Chart

A smaller number is easier to accelerate and can still be pushed on steep climbs. The selection of cassettes is up to date as of february 2018 for shimano sram sunrace and recent campagnolo models. The gear ratios you want to use for a hilly cycling holiday in mallorca are not the same as the gears you want for a time trial criterium club ride or city riding.

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The granny gear is the smallest cog on the front crankset of your bike.

Road bike gear ratios chart. Gear ratios can make or break your ride so choosing the right ones for you is vital to getting the most out of cycling menu expert road bike reviews and the latest road bike news features and. Our complete guide to bike gears takes the mystery out and will have you joining in with all the other bores banging on about ratios in no time at all. With all of the options available to today s road cyclists it is possible to produce gear ratios that are as small as 1 0 and as large as 5 0 with increments of 0 15 0 40. 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.

80 is green 50ish 80 blue and below 50 red. 3 is green 2 3 blue and below 2 red. Gear ratios on touring bikes depend on a number of factors. Where you plan to travel the terrain your experience how strong you are as a rider and of.

The selection of internal gear hubs in the calculator is complete except for one a few new models whose gear ratios have not been made public and some very rare antiques. Gear ratios greater than 3 are considered large size gears complete bicycle gear ratio chart here is a complete bicycle gear ratio chart of the most commonly used bicycle chainring and cog sizes. Colors group similar values. Gear ratio s in the bike gear ratio chart are determined by dividing the number of teeth on the front chainring by the number of teeth on the rear cog.

A larger number indicates a large gear that is harder to turn over and is used for higher speed. Colors group similar values. If you haven t already become best friends with it you may need to start.