You are reading a single comment by @Yukirin 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.
Yukirin
Boyle's Law?
Some assumptions needed regarding air temperature in the tire - say 50C (273+50=323K) for example - and that the internal volume of the tire remains constant.
likely pressure when hot = 140x323/293 = 154psi
or
starting pressure to give 140psi when hot = 140x293/323 = 127psi
The flaw in the argument is an assumed temperature - the real answer would be to check the actual pressure this afternoon. An even bigger problem is I've just noticed the time - you're probably not going to see this until you get back, in which case you'll know the answer...