This is about paintball, but basically answers the question.
Reading that, it seems that the problem with compressed air is that it needs a regulator to control the flow. But that begs the question, do you need to regulate the air flow for filling up a bike tire?
Originally Posted by
Carbon Unit
I asked this same question to some guy at Geniune Innovations and he told me that Co2 can be compressed more. If they used air, the cartridges would be bigger. He also told me that a person would exhale more Co2 pumping up a tire by hand than a Co2 cartridge holds. Not sure if this is true and I have no way of testing it.
That would make sense as to why they would prefer Co2