co2 pump question

[recycle613]

One 16oz cartridge will inflate one road bike tube to about 100 psi. I think it will fill a mtn bike tube with a little left over.

I think you need the mega 25g cartridge for mt bike tubes. I think 16g gets you to 30-40 psi only (depending on size of tire) ... that might be fine, but if you want in the 60s you'd need more. 12g should take a roadish tube to 90 psi and 16g closer to 120 psi I think.

I love CO2 ... they work like magic! I carry a combo ... I can pump a little to shape my tube then blast it. It also is insurance for the 2+ flat ride ... or the stranger too far out to get my CO2.