In my opinion, the sidewall was not cut. It appears to have delaminated. The fibers are layered in cross hatch pattern and the layers separated allowing the blowout to occur. There was no brake contact with the side wall and no sign of any abrasion or cutting of the sidewall. The blowout was not preceded by any unusual impact and (in hindsight) the delamination occurred over several miles. (Speaking of which, the incident taught me that if a tire starts to develop a once a rotation thump. Stop immediately and find the cause.)
On a related point, one concern with riding a 650 B tire is that it is not a standard size and is therefore hard if not impossible to replace on the road. If this were a 26" or 700C any bike shop or sporting good store could provide a (temporary) replacement but with 650B that is not an option. Since this occurred I swiched to SOMA B (with Kevlar) and carry a tire patch. No tire is slower than a tire with a blown sidewall. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/groups/opt_out.
