You are reading a single comment by @fredtc 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.
Zane
@fredtc
I'm fairly sure helium molecules are smaller than oxygen so escape through rubber more easily and the wheels don't stay inflated.