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?
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