Originally Posted by
VegasJen
Actually, this is the one bike I don't have a pump on. I do on my other two. But this tube is the correct size for this tire. Both are 23c, tube and tire, so that's not it. The more I think about it, the more I have to believe I must have pinched the tube the last time I mounted the tire and just not realized it. Surprised that it went that long without failing though. What's even more scary is that only about 30 minutes before this failure, I was descending a long hill and my Velo showed a max speed of 36.2mph. I can't imagine what would have happened if I had this blowout at that speed.
Even with the proper sized tube, it could still be related to the way the tube expands into the rim channel. If the failure were related to something embedded in the rim strip, it would have punctured far earlier. If it were due to sharp edges on rim strips, the same would have occurred. If you pinched it during an install, the tube wouldn’t hold air, especially given the size of the slice in your tube. I’ve had many of these and have gone through all of these steps. I’ve had many that have occurred after many, many miles on the bike. The size of the puncture…in your case slices…isn’t something that would occur in all of the above cases.
23mm tubes are usually light weight and rather small. You are also putting a lot of stress on the tube itself during cornering. If the tube is thinned…and it is…it is more prone to tearing. Try a slightly larger tube…say a 25/28mm so that you have more rubber on the rim side.