On Sunday, December 9, 2012 2:45:59 PM UTC-8, Michael wrote: > > My LBS mechanic said he doesn't think cracks are just specific >> to Velocity/Synergy. He says he has seen cracks elsewhere, including his >> Mavic rim that cracked when he went to true it up. > > Rims cracking at the spoke hole have been around for a long time. Jobst Brandt use to complain about them back in the late 80s/early 90s. He did an analysis and blamed it on hard anodizing. The old Mavic MA40 was very susceptible. In contrast, polished MA2 rarely cracked. In fact, Jobst wrote a Bicycle FAQ on it:
http://www.sheldonbrown.com/brandt/anodized-rims.html Cracking can also occurred when rims are overtensioned and probably not properly stressed relieved. I had this happened on a Ritchey OCR rear rim. Yes, the rim was anodized, but it had probably less than 1000 miles on it. I think the builder overtensioned the rim and it caused cracking at the spoke holes. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/cieezCsNPfMJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
