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#22
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True Temper calling it quits
On 12/30/2016 3:05 PM, AMuzi wrote:
On 12/30/2016 1:46 PM, DATAKOLL MARINE RESEARCH wrote: the aforementioned posters are shoveling **** getting yawl into THEIR post. while steel is real in a custom bike Ti is more real...and equally endangered. at what level $$$$$ for custom does an extra shovel of $$$$ interfere with surreality ? CF gives me a headache. In kayak canoe and bicycle. neurotic ... Ima gonna get an aspirin. what CF malfunctions ? we have looked hi and lo for reports n found barely a handful with a couplah fork disasters....also finding malfunction reports go back to the factory not to liability insurance adjusters n the State Board Dear Gene- https://images.devilfinder.com/go.ph...carbon+bicycle everything breaks. For a while there it seemed like we were seeing fairly-regular stories of road bike carbon fork failures, even among amateurs not trying to break them. This was around the time the companies making them stopped using steel steerer tubes and went to full-carbon construction, IIRC. 'Course, steel probably went through this phase also. But it was 100-odd years ago.... I still get flack online for suggesting that CF bike parts are disposable, and shouldn't be repaired. Others insist it's okay since Calfee and a couple other places will take your money and put more plastic goop on it for you, but no other endeavor elsewhere does that (planes, cars, boats, other sporting goods equipment, ect). With everything else--any time you suffer structural damage in a composite part, you throw it away and you go buy a new one. |
#23
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True Temper calling it quits
? All composites are repairable from Stealth tO Kayak ....
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#24
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True Temper calling it quits
On Fri, 30 Dec 2016 21:35:34 -0600, DougC
wrote: On 12/30/2016 3:05 PM, AMuzi wrote: On 12/30/2016 1:46 PM, DATAKOLL MARINE RESEARCH wrote: the aforementioned posters are shoveling **** getting yawl into THEIR post. while steel is real in a custom bike Ti is more real...and equally endangered. at what level $$$$$ for custom does an extra shovel of $$$$ interfere with surreality ? CF gives me a headache. In kayak canoe and bicycle. neurotic ... Ima gonna get an aspirin. what CF malfunctions ? we have looked hi and lo for reports n found barely a handful with a couplah fork disasters....also finding malfunction reports go back to the factory not to liability insurance adjusters n the State Board Dear Gene- https://images.devilfinder.com/go.ph...carbon+bicycle everything breaks. For a while there it seemed like we were seeing fairly-regular stories of road bike carbon fork failures, even among amateurs not trying to break them. This was around the time the companies making them stopped using steel steerer tubes and went to full-carbon construction, IIRC. 'Course, steel probably went through this phase also. But it was 100-odd years ago.... I still get flack online for suggesting that CF bike parts are disposable, and shouldn't be repaired. Others insist it's okay since Calfee and a couple other places will take your money and put more plastic goop on it for you, but no other endeavor elsewhere does that (planes, cars, boats, other sporting goods equipment, ect). Not true. I have a good friend who's business is essentially repairing and rebuilding composite boats, the EAA has rather extensive instructions for repairing damaged composite home built aircraft and Chevrolet Corvette's have been made with composite bodies since the early 50's and I doubt that the owners threw them away when they dinged a fender. With everything else--any time you suffer structural damage in a composite part, you throw it away and you go buy a new one. -- cheers, John B. |
#25
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True Temper calling it quits
Repairing a "part' as the fork is not a reasonable idea.
What we found in the past CF discussion was 'stories' of broken forks did not generate incident evidence tho the search was clouded by lack of accessible data. That is, forks may have cracked but stories of fork failures at speed leading to extensive plasting surgery did not play out. At that time consensus here was CF fork use was unnecessarily risky, evidence or not. |
#26
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True Temper calling it quits
On 12/31/2016 12:02 AM, John B. wrote:
On Fri, 30 Dec 2016 21:35:34 -0600, DougC wrote: For a while there it seemed like we were seeing fairly-regular stories of road bike carbon fork failures, even among amateurs not trying to break them. This was around the time the companies making them stopped using steel steerer tubes and went to full-carbon construction, IIRC. 'Course, steel probably went through this phase also. But it was 100-odd years ago.... I still get flack online for suggesting that CF bike parts are disposable, and shouldn't be repaired. Others insist it's okay since Calfee and a couple other places will take your money and put more plastic goop on it for you, but no other endeavor elsewhere does that (planes, cars, boats, other sporting goods equipment, ect). Not true. I have a good friend who's business is essentially repairing and rebuilding composite boats, the EAA has rather extensive instructions for repairing damaged composite home built aircraft and Chevrolet Corvette's have been made with composite bodies since the early 50's and I doubt that the owners threw them away when they dinged a fender. Yea but boat hulls, aircraft skin and car body panels aren't highly-stressed structural parts like a bicycle frame is. They make composite aircraft propellers, does anybody repair them if they suffer structural damage? The Corvette uses a fiberglass leaf spring in the rear, does anybody repair them if they crack or split? Composites are a bunch of long interleaved fibers, with some plastic sticking them together. Once you get a crack in one spot, the interleaved fibers are broken in half right there and there's no way to make it back the way it was before it broke. What do these CF bicycle frame companies have to say about trying to repair a cracked frame?....I would bet they'd say it's not a wise idea. .....If it was, they would offer that service, right? Because, you know, they could do it better than anyone else, right?... |
#27
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True Temper calling it quits
gnaw ...the biz runs on selling bikes.
......... fewer failures the better no prob. ......... no repair is best anyway, 2-3 layers of cloth over a fracture is srong enough. the prob maybe with bike frames is the failure occurs near the joint ( one in the Muzi collection ?) a cloth wrap is difficult, unsightly ! yuch ! and idea would arises the crack is a defect manifestation in manufacturing the joint...strongly implying the joint crack is repairable but the joint isnot. |
#28
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True Temper calling it quits
On 12/31/2016 6:55 AM, DougC wrote:
On 12/31/2016 12:02 AM, John B. wrote: On Fri, 30 Dec 2016 21:35:34 -0600, DougC wrote: For a while there it seemed like we were seeing fairly-regular stories of road bike carbon fork failures, even among amateurs not trying to break them. This was around the time the companies making them stopped using steel steerer tubes and went to full-carbon construction, IIRC. 'Course, steel probably went through this phase also. But it was 100-odd years ago.... I still get flack online for suggesting that CF bike parts are disposable, and shouldn't be repaired. Others insist it's okay since Calfee and a couple other places will take your money and put more plastic goop on it for you, but no other endeavor elsewhere does that (planes, cars, boats, other sporting goods equipment, ect). Not true. I have a good friend who's business is essentially repairing and rebuilding composite boats, the EAA has rather extensive instructions for repairing damaged composite home built aircraft and Chevrolet Corvette's have been made with composite bodies since the early 50's and I doubt that the owners threw them away when they dinged a fender. Yea but boat hulls, aircraft skin and car body panels aren't highly-stressed structural parts like a bicycle frame is. They make composite aircraft propellers, does anybody repair them if they suffer structural damage? The Corvette uses a fiberglass leaf spring in the rear, does anybody repair them if they crack or split? Composites are a bunch of long interleaved fibers, with some plastic sticking them together. Once you get a crack in one spot, the interleaved fibers are broken in half right there and there's no way to make it back the way it was before it broke. What do these CF bicycle frame companies have to say about trying to repair a cracked frame?....I would bet they'd say it's not a wise idea. ....If it was, they would offer that service, right? Because, you know, they could do it better than anyone else, right?... Let's not be categorical about that (or any material). There are several good experienced carbon bicycle repair guys besides Calfee. A quick perusal of their web photos might elucidate the range of repairs for you. I assume that just like steel there are jobs they refuse, where cost/risk/value don't align well. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#29
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True Temper calling it quits
On Friday, December 30, 2016 at 10:02:18 PM UTC-8, John B. wrote:
On Fri, 30 Dec 2016 21:35:34 -0600, DougC wrote: On 12/30/2016 3:05 PM, AMuzi wrote: On 12/30/2016 1:46 PM, DATAKOLL MARINE RESEARCH wrote: the aforementioned posters are shoveling **** getting yawl into THEIR post. while steel is real in a custom bike Ti is more real...and equally endangered. at what level $$$$$ for custom does an extra shovel of $$$$ interfere with surreality ? CF gives me a headache. In kayak canoe and bicycle. neurotic ... Ima gonna get an aspirin. what CF malfunctions ? we have looked hi and lo for reports n found barely a handful with a couplah fork disasters....also finding malfunction reports go back to the factory not to liability insurance adjusters n the State Board Dear Gene- https://images.devilfinder.com/go.ph...carbon+bicycle everything breaks. For a while there it seemed like we were seeing fairly-regular stories of road bike carbon fork failures, even among amateurs not trying to break them. This was around the time the companies making them stopped using steel steerer tubes and went to full-carbon construction, IIRC. 'Course, steel probably went through this phase also. But it was 100-odd years ago.... I still get flack online for suggesting that CF bike parts are disposable, and shouldn't be repaired. Others insist it's okay since Calfee and a couple other places will take your money and put more plastic goop on it for you, but no other endeavor elsewhere does that (planes, cars, boats, other sporting goods equipment, ect). Not true. I have a good friend who's business is essentially repairing and rebuilding composite boats, the EAA has rather extensive instructions for repairing damaged composite home built aircraft and Chevrolet Corvette's have been made with composite bodies since the early 50's and I doubt that the owners threw them away when they dinged a fender. With everything else--any time you suffer structural damage in a composite part, you throw it away and you go buy a new one. -- cheers, John B. |
#30
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True Temper calling it quits
On Friday, December 30, 2016 at 10:02:18 PM UTC-8, John B. wrote:
On Fri, 30 Dec 2016 21:35:34 -0600, DougC wrote: On 12/30/2016 3:05 PM, AMuzi wrote: On 12/30/2016 1:46 PM, DATAKOLL MARINE RESEARCH wrote: the aforementioned posters are shoveling **** getting yawl into THEIR post. while steel is real in a custom bike Ti is more real...and equally endangered. at what level $$$$$ for custom does an extra shovel of $$$$ interfere with surreality ? CF gives me a headache. In kayak canoe and bicycle. neurotic ... Ima gonna get an aspirin. what CF malfunctions ? we have looked hi and lo for reports n found barely a handful with a couplah fork disasters....also finding malfunction reports go back to the factory not to liability insurance adjusters n the State Board Dear Gene- https://images.devilfinder.com/go.ph...carbon+bicycle everything breaks. For a while there it seemed like we were seeing fairly-regular stories of road bike carbon fork failures, even among amateurs not trying to break them. This was around the time the companies making them stopped using steel steerer tubes and went to full-carbon construction, IIRC. 'Course, steel probably went through this phase also. But it was 100-odd years ago.... I still get flack online for suggesting that CF bike parts are disposable, and shouldn't be repaired. Others insist it's okay since Calfee and a couple other places will take your money and put more plastic goop on it for you, but no other endeavor elsewhere does that (planes, cars, boats, other sporting goods equipment, ect). Not true. I have a good friend who's business is essentially repairing and rebuilding composite boats, the EAA has rather extensive instructions for repairing damaged composite home built aircraft and Chevrolet Corvette's have been made with composite bodies since the early 50's and I doubt that the owners threw them away when they dinged a fender. With everything else--any time you suffer structural damage in a composite part, you throw it away and you go buy a new one. John, do you have the idea that they stick the crashed front end of a Corvette back together? Or a wing section of a small aircraft? What are these composite boats that you're talking about that are constructed with mostly carbon fiber? |
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