Bicycle – how many speeds?

Bicycle - how many speeds is the best to have on a bicycle? How many different gearing ratios is needed for cycling?

Updated: 16/11/2018. There’s been a long trend of ever increasing number of speeds on bicycles. From single speeds, “tenspeeds”, over 18 speeds (bicycles with 3×6 chainring setups), to modern “1X” trends with only one front chainring and 10 to 12 rear chainrings (“sprockets”). This post will try to answer the question: how many speeds are … Read moreBicycle – how many speeds?

Rear derailleur

Bicycle rear derailleur - chain wrap capacity, top and low normal, rapid rise, max sprocket capacity...

Updated: 08/11/2018. This post explains important facts about bicycle rear derailleurs. From construction and parts, to important characteristics such as chain wrap capacity etc.   1. How does the bicycle rear derailleur work? Rear derailleurs (often refferd to as RD) are used on bicycles with external gearing and multiple sprockets at the rear hub. They … Read moreRear derailleur

Bicycle gear ratios – gear inches

Bicycle gear ratios - what they are, what a gear-inch is, what gear ratios are needed, what to look out for

Updated: 16/11/2018. This post explains what bicycle gear ratios are (often expressed in gear-inches), how they work, what are the needed gear ratio ranges etc.   1. How do bicycle gear ratios function? Bicycle is driven by transferring pedaling force to the rear wheel. When pedals are turned, front chainring draws the chain, which goes … Read moreBicycle gear ratios – gear inches