The number of years is irrelevant. Some skinny person who rides upright and gingerly on smooth roads 5 miles per week is going to get 500 years out of the bar.
On Monday, March 18, 2013 4:10:09 PM UTC-5, William wrote: > > You pose two questions: > > 1. Anyone know anything about aluminum bar life? > > I know a little bit about fatigue life of materials. Any metal that is > cyclicly loaded will fatigue and fail eventually. Just about every metal > has a similar look to it on an S-N curve (Wikipedia that for an > explanation). The take home is that almost everything eventually wears out > and fails. It's just a matter of when. Steel is a notable exception. If > steel is cyclicly loaded at a low enough Stress, then it essentially never > fatigues. Incredible stuff. Anyway, Aluminum does fatigue and > fail...eventually. When? It depends on how much you are stressing it and > how many cycles you put on it daily. > > 2. Do I need to throw away the old used set of bars I have? > > Nitto is going to say what they say because they generate these S-N curves > and test the heck out of their products. They do see parts fail after lots > of cycles, and what they recommend is going to be conservative. When Nitto > says 5 years, I think 20. I do not think 50 years. You don't know when > your bars are going to fail unless you know REALLY accurately what the > loading history of your bars is. In other words, you have no idea. > Anybody who decides to buy and ride used equipment assumes some additional > risk because you just don't know for sure what the history is. If you > think you would feel a lot more comfortable replacing your handlebars, then > I'd say do it. > > On Monday, March 18, 2013 12:50:43 PM UTC-7, Michael wrote: >> >> In a cool interview with Nitto exec Mr. Yoshikawa, Grant asks this >> question. Nitto exec leaves it up to consumer. So I was wondering if >> anything to be concerned about. Anyone know anything about aluminum bar >> life? >> Do I need to throw away the old used set of bars I have? Don't want any >> accidents. > > -- 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?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
