Originally Posted by
Brian Ratliff
CO2 is nice and all but has it's problems.
3) The only advantage of CO2 over a pump is how it can speed up flat changing. Thus, I only use it on group rides where nobody wants to wait 10 minutes for someone to change a tube.
I've never timed it, but it seems that most of the time is taken up by tube replacement. The actual inflation, even with a pump, is pretty quick. I've never used a mini pump, so maybe those take forever.