Quote Originally Posted by Rakekay
How do you use that CO2 thing anyway?
rakekay... you buy a CO2 dispenser... there are 2 kinds that I know of... one has a threaded (so you screw it in) air cartridge and is pretty small but the cartridges are expensive, the other is a non-threaded dispenser and you can get the CO2 at Walmart... cheap!

You put the cartridge into the dispenser and screw the top on which punctures the cartridge allowing air to flow out when you're ready. Then you put the dispenser onto your valve just like you do a bike pump... push down and wahlah! Instant air! Much easier than pumping... I actually carry both. The reason is that I usually carry ONE CO2 for a flat BUT heaven help me if I flat more than once, or pinch the tube when I changed it... then I have the pump as a backup... also if I flat and use my CO2 and then come upon another rider with a flat I have a pump if needed...

hope that helps!