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Calculate gear ratios given chainring and sprocket (cog) sizes.
Bike Gear Ratio Charts. A “standard” chainset for a road bike is typically 53/39, and a standard cassette might be 11/28. This means that your hardest gear is 53/11 (gear ratio of 4.8), and your easiest is 39/28 (gear ratio of 1.4).
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. The selection of cassettes is up to date as of February 2018 for Shimano, SRAM, SunRace and recent Campagnolo models.
Click “Calculate” to generate a list of gear ratios, gear inches, gain ratios, and development values for each gear combination. Analyze the results to identify the optimal gear ratios for your specific cycling needs and preferences.
The bike gear calculator shows the tables of gear ratios and gear inches for chosen chainring and cog ranges.
This post explains what bicycle gear ratios are (often expressed in gear inches), how they work, what are the needed gear ratio ranges etc. Table Of Contents (T.O.C.): TL/DR. How do bicycle gear ratios function? Gear ratio – “gear inches” Calculating the needed gearing; Human body limitations; Chain line and cross chaining
Gearing systems are an important component of bicycle design. This article aims to explain what gear ratios are, how they're calculated, and when they're useful. What are gear ratios? Gear ratio is the ratio of the chainring size to the sprocket size, or in other words, it's the ratio of revolutions of the pedals to revolutions of the rear wheel.
1. Introduction to Bike Gears. Why are bike gears important? Bike gears are important because they allow cyclists to adjust their pedaling effort to the terrain they are riding on. By changing the gear ratio between the front chainrings and rear cassette, cyclists can make it easier or harder to pedal, depending on the incline and terrain.
Result: Gear Ratio: Estimated Speed: mph. Understanding Gear Ratios. Gear ratios are like the secret sauce behind the smoothness of your bike ride. Imagine gears as different-sized wheels working together, and the gear ratio is how these wheels compare in size.
THIS CHART: All of the ratios that give you the same distance are effectively the same gear, all you need to know is that the numbers are the numbers of yards per complete revolution, and the bigger the number, the harder the gear.