Originally Posted by
nesyouth
yeah, i mean, you would thnk that, and i felt something weird about four seconds before the blow out, so something blew out, but i'm pretty sure it was all inside the tire because it was all contained in the tire when i got off and looked at it, wouldn't it have exploded and had something at least hanging outside from under the bead had it burst outside?
And the tear itself is along the side above the bead, which from what i can tell doesn't seem to be in a position where it would come out from under the bead and blow out.
But again, i'm not an expert, this is just what i can take from seeing it right after it blew out and taking the tube out.
I know it seems otherwise but Waterrockets is correct. Whether the tube ends up still in the tire or not, whether the split is on the side or not, tubes do not blow out without at least partially escaping the confines of the tire/rim. You (and anyone else with a blowout) should ignore any advice to look at things that would cause a puncture. The tube simply will not blow out from that. Once again, blowouts (kablam!) have only two causes:
1. The tube pushes the tire off the rim enough for a portion of the tube to explosively expand. Caused by a weak/broken bead, mis-sized tire or poor installation technique.
2. The tube escapes through a defect or damaged area on the tire, typically a preexisting long glass cut or a split sidewall.
If it is not a true blowout and merely a very, very fast leak (some of them may have been) then other causes may be the culprit.
In over 20 years of mechanic work and over 50 years of riding I don't believe I saw an exception to the above.