Hi All!
Just a quick note: If you have a blowout and no spare tube, you can tear the remainder apart, then tie a knot in each end and get home again. Obviously, this is a trick best reserved for skinny (700C) tubes rather than 26x2.0, but it sure beats walking. Makes an awful flat spot and double-bumps thanks to the knots, however.
I don't believe the commercial versions would have the double-bump effect, but I wonder about a possible flat-spot at the ends. Any users out there with personal experience? Just curious.
Best,
Dan. (...who once did this to save a long walk home on a bike that wasn't his)