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 more Bicycle – how many speeds?
Updated: 09/09/2020. 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 more Front derailleur
Updated: 09/09/2020. 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 work … Read more Rear derailleur
Bicycle gear ratios (“speeds”) explained. What are “gear inches”? What are the needed gear ratios for climbing, downhill. What to pay attention to.