Re: [RBW] Outside article on CF
Dang, that's a bad crack. Hey, we have the same year and color Trek Fuel Ex. I have a Niner Sir9 which hasn't shown a crack but the frames have been known to develop issues in the seat stays near the seat tube. I keep an eye on it. Hopefully if it ever does crack, bend, or otherwise show signs of failure Niner will do me right. On Thursday, July 26, 2018 at 12:29:31 PM UTC-5, Eric Daume wrote: > Somewhat germane to this topic, I recently discovered that my steel Niner > mtb frame was nearly cracked through at head tube, while the generic > Chinese carbon fork was fine. > > https://bikingtoplay.blogspot.com/2018/07/rip-ros.html?m=1 > > Though to the frame’s credit, I did find the crack before the head tube > sheared off. > > Eric > > On Thursday, July 26, 2018, jack loudon > > wrote: > >> Like Joe and Patrick, I also think CF *can* be safe but the buyer/owner >> needs to do a lot more due diligence than when buying steel. Because the >> consequences of CF failure are so great, sloppy design and construction >> simply can't be tolerated. I would tend to trust company like Salsa (for >> instance) because their CF frames seem to emphasize strength over extreme >> light weight. Their Cutthroat has had plenty of testing on the Tour Divide >> and other races, and if Salsa has had CF frame or fork failures, I haven't >> heard of them. OTOH, Salsa had a steel fork recall awhile back. IMO it's >> not the material but the integrity and expertise of the designer/builder. >> >> Jack >> Seattle >> >> On Thursday, July 26, 2018 at 8:36:48 AM UTC-7, Joe Bernard wrote: >>> >>> Patrick, I think the answer is maybe. If you buy a high-end CF bike from >>> someone like Calfee who knows what they're doing, I think it would be safe >>> IF you don't bang it on something and IF it's inspected regularly. But it's >>> still not going to be a race car that, if it fails, spins around and clouts >>> a tire wall while you're belted in with a full-face helmet. For me I would >>> definitely ride a Calfee frame, but the steering system has to be metal. I >>> need those bars in my hands, and that front wheel in its proper location >>> and rolling. I don't trust carbon to do that. >> >> -- >> 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. >> > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Outside article on CF
Somewhat germane to this topic, I recently discovered that my steel Niner mtb frame was nearly cracked through at head tube, while the generic Chinese carbon fork was fine. https://bikingtoplay.blogspot.com/2018/07/rip-ros.html?m=1 Though to the frame’s credit, I did find the crack before the head tube sheared off. Eric On Thursday, July 26, 2018, jack loudon wrote: > Like Joe and Patrick, I also think CF *can* be safe but the buyer/owner > needs to do a lot more due diligence than when buying steel. Because the > consequences of CF failure are so great, sloppy design and construction > simply can't be tolerated. I would tend to trust company like Salsa (for > instance) because their CF frames seem to emphasize strength over extreme > light weight. Their Cutthroat has had plenty of testing on the Tour Divide > and other races, and if Salsa has had CF frame or fork failures, I haven't > heard of them. OTOH, Salsa had a steel fork recall awhile back. IMO it's > not the material but the integrity and expertise of the designer/builder. > > Jack > Seattle > > On Thursday, July 26, 2018 at 8:36:48 AM UTC-7, Joe Bernard wrote: >> >> Patrick, I think the answer is maybe. If you buy a high-end CF bike from >> someone like Calfee who knows what they're doing, I think it would be safe >> IF you don't bang it on something and IF it's inspected regularly. But it's >> still not going to be a race car that, if it fails, spins around and clouts >> a tire wall while you're belted in with a full-face helmet. For me I would >> definitely ride a Calfee frame, but the steering system has to be metal. I >> need those bars in my hands, and that front wheel in its proper location >> and rolling. I don't trust carbon to do that. > > -- > 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 https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Outside article on CF
What about a carbon fiber frame with a steel fork? You'd shore up the part that arguably has the highest consequence were it to fail, but you could still have all the manufacturing flexibility one gets with carbon fiber, i.e., making frames in strange shapes and so forth. Not to say I'd buy one, I'm happy with my fully steel bikes, but it seems like it would improve on the safety of a bike that was otherwise mostly carbon fiber. -Jim On Wed, Jul 25, 2018 at 2:24 PM Leslie wrote: > Given our perspectives on steel, carbon fiber, and bicycles, I thought > this was a relevant article to share here: > > https://www.outsideonline.com/2311816/carbon-fiber-bike-accidents-lawsuits > > > > > -L > > > > > -- > 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 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. 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Outside article on CF
Well another anecdote, but a guy I know was cresting on a big climb (up Coleman Valley here in the SF Bay Area) and his carbon fork fell apart. Needless to say, his ride was ruined, but if the fork failed on the steep descent a few meters ahead, then his life might have been ruined. Needless to say, he doesn't ride with a carbon fork anymore. No doubt it is nice to go faster up a hill on a light bike, but is going a few seconds faster here and there worth it? Toshi On Wed, Jul 25, 2018 at 12:24 PM Leslie wrote: > Given our perspectives on steel, carbon fiber, and bicycles, I thought > this was a relevant article to share here: > > https://www.outsideonline.com/2311816/carbon-fiber-bike-accidents-lawsuits > > > > > -L > > > > > -- > 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 https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Outside article on CF
And let's not even talk about the inspections. Do you even know anyone who does inspections of carbon fiber bicycles? On 07/25/2018 03:51 PM, Joe Bernard wrote: Man that's a depressing article. CF works if it's used exactly correctly to demanding standards, as seen in jet airliners and Formula One cars. Which is not even remotely how it's handled in most mass production bicycles. -- Steve Palincsar Alexandria, Virginia USA -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
[RBW] Outside article on CF
Man that's a depressing article. CF works if it's used exactly correctly to demanding standards, as seen in jet airliners and Formula One cars. Which is not even remotely how it's handled in most mass production bicycles. -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
[RBW] Outside article on CF
Given our perspectives on steel, carbon fiber, and bicycles, I thought this was a relevant article to share here: https://www.outsideonline.com/2311816/carbon-fiber-bike-accidents-lawsuits -L -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
