You are reading a single comment by @moth and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@moth
165 to 170 is 10 mm more diameter, 31.4159... mm more pedal movement per revolution, or your feet moving about 3% faster for the same rpm, which means your feet would have 6% more kinetic energy.