To clarify, I did change out the wheel, and the creaking stopped, so it's not the bb. Put the wheel back on, and it started again. Rear hub is smooth as glass. There are two cracks at least, still small but noticeable. And the noise is alarming. I'm guessing the two are related, and your friend's experience indicates that it is.
On Monday, June 9, 2014 10:59:31 PM UTC-5, IanA wrote: > > In terms of the creaking, it would be a good idea to find out exactly what > is the cause. If you could try a different wheel on the back and if the > creaking is still there, it could be bottom bracket related, or a pedal or > the saddle or any number of things. It can be difficult to find the cause > of a creak, squeak or rattle, but some investigation is certainly necessary > as damage to threads could occur if the creaking is at the bottom bracket, > for example. That us to say if the BB has partially un-threaded itself. > > Cracks in a wheel can also make a creaking sound, but they should be > reasonably easy to spot. Look for hairline cracks starting at the spoke > hole or eyelet on the rim. A friend of mine rode a rim with cracks in it > for some distance (a few weeks while touring) and it didn't cause problems, > but he described the noises as alarming. > > If the problem is the rim itself, assuming the wheel-builder sourced the > rim for you, he should be able to sort out any warranty stuff. Velocity > have a good reputation for customer service, so it's worth following up. > > IanA. > > > > On Monday, June 9, 2014 8:21:06 PM UTC-6, MobileBill wrote: >> >> I say this recognizing that I might be jumping to conclusions, but I seem >> to have once again had problems with Synergy OC 650B rims. Since so many of >> you have them, I'm asking you to help my analyze whether the problem is the >> rim or something else. >> Here's the issue: A really severe creaking has been rattling through >> the frame and getting worse for some months. I mean howling loud - you >> could hear me creaking from a block away. It was worse when I turned the >> pedals, but it made some noise all the time. I changed saddles, retightened >> bb and chainrings and pedals, reset cassette and checked rear hub and >> finally got the bright idea of changing out the wheel. >> As soon as I did, the noise stopped. Now I'm looking at the rim, and >> I see the same hairline cracks developing around the eyelets that I had >> developing with my first synergy oc rim several years ago. >> This relatively new rim, a replacement for the first cracked synergy >> oc rim, only has a little over 2000 miles on it. It was built by one of the >> best wheelbuilders. I thought that the early problems with oc rims had been >> fixed. >> I don't think it's just me: I weigh 180 pounds and inflate Schwalbe >> marathons to no more than 60 psi. I carry groceries home on my commute, and >> travel occasionally rough city streets, but do not ride this bike off road >> (though I would like to if the danged rims could be trusted). >> Do you think the creaking and the cracking are related? >> How long can I keep riding with cracked rims? >> Is anyone else experiencing this rim cracking? I don't have this >> problem on any other rims, including some less stout Mavic rims ... >> Is this something that should be happening this quickly (my Marathon >> tires last two to three times longer than the rim!)? >> SHould I pester velocity? the wheel builder? >> >> >> > -- 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/d/optout.
