I'm thinking of buying a CO2 cartridge bike pump to take with me on trips. I'm looking for opinions, I don't have any experience with them. Thanks!

#bike #BikeTooter #TrekBikes

@stfn Don't not bring your minipump if you're going on a long trip. You don't want to end up popping a tube and then being stuck without enough air to finish your trip. Yes you can bring multiple cartridges, but CO2 can pass through the valve a lot easier compared to regular air so you'll end up with a flat in the morning anyway

@brandon @stfn

Why can CO2 leak (I guess that's what you mean) through a valve easier than air?

@robryk @stfn I can't remember all the science but something about the differences in permeability and size of the molecule, as well as the thermal properties between the two

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@brandon @stfn

A set of random people on the internet (after excluding ones that say things that can't be real) is reasonably unanimous in claiming that it's because co2 is in some way "soluble" in solid rubber. See e.g. madsci.org/posts/archives/may9

Thank you, I learned something new.

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