Yesterday, in my haste to leave for work on time, I smacked my bike into my wife's bike behind it. All of the air came rushing out of the rear tire within a matter of seconds. Today I changed the tube, and examined the bad one. As I suspected, I must have struck the other bike with the valve stem, because the result was a tear right where the stem meets the tube. It is about 40% around the base and the stem is Shraeder.
Obviously the glueless patches I have won't fix this, but is there any way to fix this so I have at least an emergency spare tube? I was thinking perhaps with the glue from glue-on patches?
Thanks for any suggestions.