Hey Patrick, Just glad you didn't get hurt during your recent experience. Isn't it amazing? Mechanical objects are quite impressive. They take a lot of abuse, they may not receive the care they deserve and yet they still keep on keepin' on. Only when they fail do we step back and see what happened and why (I am as much to blame).
Since I now have time to actually spend working on things I have found that I probably should have spent more time (maybe priority?) inspecting and making the hard decision to stop, remove from service and replace or seek a professional opinion. I realize bike shops were there all along to provide that service, but human nature being what it is, we probably assumed their recommendations were only to benefit them, not us. I am as much to blame for that mentality and I do need to re-visit and possibly modify that behavior. I would rationalize the lack of action by saying in my head 'its only a bike.' Take care, Jeff On Saturday, March 3, 2018 at 4:57:49 AM UTC-8, Patrick Cronin wrote: > > @Jeff, I appreciate your story especially as the owner of two tandems. I, > too, am surprised that your front wheel was more impacted than your rear > wheel. In years of racing and now un-racing, I've never checked/inspected > rims before *every* ride and I still don't see any need with rim brakes. > If I were running disc brakes I'd be inclined to check rims more often. As > soon as I saw my cracked rim I cut out the Phil hub and shipped it off to > be rebuilt. However, Chris Murray's rim failure story has me thinking that > I should have inspected the rim more often after discovering the bulging > rim and possibly replaced it sooner. If I have a similar experience on a > front wheel I will certainly retire it sooner. That is the whole reason I > posted in the first place--to noodle on the experience and seek input from > others. Thanks for yours! > > Cheers, > Patrick > > On Saturday, March 3, 2018 at 2:12:47 AM UTC-5, Jeffrey Arita wrote: >> >> Patrick, I have to agree with what Jim Bronson kindly suggests/advises. >> >> My wife and I ride tandem. Late last year I built up a set of wheels >> with new rims (Velocity Dyads). We were on a night ride with our local >> cycling club. We were headed downhill on a decent hill and struck a very >> large dip in the road which I, as the Captain, did not see (my bad). It >> was quite severe and jolted the heck out of us. We have a good headlight >> too. We immediately had a pinch flat on the front and I was able to >> fortunately keep us up and stop in a calm manner. Whew! Caught our >> breaths and fixed the flat and got going. >> >> I took both wheels off to check. I found a very large bulge on the front >> rim (36 hole). I took the tube and tire off and checked the spokes. All >> the spokes were amazingly intact. The rim took the brunt of the force >> absorbing most of the energy. The rear wheel was not nearly as bad (which >> is interesting) with a much less pronounced bulge. The rear is 40 hole, >> but most of our weight was on it. BUT, I have in the garage two (2) brand >> new Velocity Dyad rims, ready to be re-laced up. >> >> Maybe reconsider eventual replacement of parts that take normal wear and >> tear. Enough said. >> >> Best regards, >> >> Jeff >> >> >> >> On Wednesday, February 28, 2018 at 12:32:51 PM UTC-8, Jim Bronson wrote: >>> >>> Rivendells are great bikes and the owners are usually experienced >>> cyclists, which has me all the more scratching my head about this thread. >>> >>> You'd be better off not ignoring signs of impending rim failure, like an >>> obvious and severe rim braking surface crack, than making any sort of moral >>> equivocation about what brake types are best for safety. >>> >>> I'm sorry, but riding this for 1000 miles was not a good idea. If it >>> were me, the first time I noticed it, I would have nursed the bike home and >>> immediately replaced it. >>> >>> I replaced one of my back rims a while ago for some barely noticeable >>> surface cracks, and another one more recently when the eyelets started >>> pulling through. There's no way I would have ridden with the damage that >>> you depict in your picture. >>> >>> Does anyone remember "ABC Quick Check every time you ride"? It's a good >>> idea. >>> >>> On Wed, Feb 28, 2018 at 8:33 AM, Patrick Cronin <patrick...@gmail.com> >>> wrote: >>> >>>> >>>> After riding a bulging 40-spoke Velocity Dyad rim on my Hunqapillar for >>>> too long it finally cracked. The only way I knew about the bulge is >>>> because >>>> once per rotation the wheel rubbed *both* brake pads. The wheel was >>>> never out of true, so I kept riding it ~1000 miles. I decided to rebuild >>>> the wheel only because I hit a sand/salt patch on the road, skidded about >>>> ten feet when the rim hit the brake pads and I nearly went down. Most >>>> notable is that I never flatted, as in not once since this wheel was built >>>> in 2011. I'm curious if I would have known about the issue had I been >>>> running disc brakes. That got me thinking more: I wonder if rim brakes are >>>> safer for this reason. Had I been running discs I likely would have had a >>>> catastrophic rim failure because, other than cosmetic, there would have >>>> been no indication of a problem. Thoughts? >>>> >>>> >>>> -Patrick >>>> >>>> >>>> >>>> >>>> >>>> <https://lh3.googleusercontent.com/-7YsTmvCvYnY/Wpay8RfsJeI/AAAAAAAAsrY/azDpm_9nqTgfXd0uBXN694VubKvvY9K9wCLcBGAs/s1600/IMG_0002.jpg> >>>> >>>> -- >>>> 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-bun...@googlegroups.com. >>>> To post to this group, send email to rbw-owne...@googlegroups.com. >>>> Visit this group at https://groups.google.com/group/rbw-owners-bunch. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> >>> -- >>> ------------------------------------------------------------------ >>> signature goes here >>> >> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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