You are reading a single comment by @ewanmac 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.
ewanmac
Wheel based speed is more accurate than GPS on a garmin. That is why when doing aero testing you are always advised to take readings from a wheel based sensor rather than GPS.