Quote Originally Posted by ny biker View Post
I was advised to practice at home first because you're likely to overinflate the new tube and cause it to burst.
That really depends on the kind and size of your tires. A 16g CO2 cartridge has just about enough to take a 700x23c road tire up to pressure.

I carry an inflater head, two cartridges, one tube, a patch kit and a mini-pump. Patching and inflating with a mini-pump are time-consuming ... but not as time-consuming as walking to your destination when you don't have the means to fix a flat.