Originally Posted by
ghettocruiser
Why wouldn't you just use 700C tubes?
They're stupidly light, available everywhere, and even the correct diameter.
700c tubes don't stretch enough, unless perhaps you run too-high pressure, 26inch tubes do stretch enough, unless they are of the ultralight or whatever variety. Anyways, it sounds like the OP just wants to know if he can carry a single 26inch tube, and the answer is yes. That said I prefer 29er tubes. A little bit easier if you're in a hurry.