I'd say it was a bit risky if you are only going to have 25mm of seatpost in the tube before the crack but that's just me I guess Others might risk it but going round Richmond isn't exactly flat.
@Webof started
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.
I'd say it was a bit risky if you are only going to have 25mm of seatpost in the tube before the crack but that's just me I guess Others might risk it but going round Richmond isn't exactly flat.