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?
Updated: 08/11/2018. Explanation of all the important facts related to bicycle front derailleurs. Contents: 1. How does the front derailleur work? 2. FD mounting to the bicycle frame …2.1. Direct mount system known as H0, or DM …2.2. E-type (also known as low direct mount, E2-type, S3, Spec 3) …2.3. SRAM S2 (Spec 2) …2.4. … Read moreFront derailleur
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
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