Originally Posted by
_ForceD_
can you get just plane compressed air (threaded) cartridges? And also...how many CO2 and/or compressed air cartridges are needed to inflat a single road tire?
A compressed air cartridge the same size as a CO₂ cartridge would not hold much compressed air. I estimate a 12-gram CO₂ cartridge would hold less than a gram of air at the same pressure. Practically worthless.
A single CO₂ cartridge is enough to inflate one road tire.