Rear derailleur

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

Updated: 20/05/2019. 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 moreRear derailleur