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#11
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SRAM Red BB Disassembly
damyth wrote:
Just to be clear, I'm no fan of ceramic myself, In an article in TOUR about resistance in the drivetrain, the author stated that ceramic bearings really bring you next to nothing and are a waste of money. It was also said that ceramic bearings belong where other bearings fail, because of extreme heat or very high RPM. Derk |
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#12
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SRAM Red BB Disassembly
On May 26, 5:41 am, "Qui si parla Campagnolo-www.vecchios.com"
wrote: BTW-I think the Centaur design for 2007 was a huge mistake. You mean the downgrade of the hubs and shifters in exchange for a few carbon bits? I like how the 2007 Centaur RD, with its carbon outer link is actually HEAVIER than the prior model, because it has the solid top knuckle, instead of the 2-beam one. And how the Centaur carbon UT crank has the cheap stamped "Exa-Drive" chainrings of Veloce and below, while the aluminum crank still has the good forged "Ultra- Drive" rings. That's why my Guerciotti is equipped with old Centaur, except for the aluminum UT crank. I wouldn't turn down a set of the skeleton brakes, but the old ones were $35 on closeout. An excellent, no-nonsense group with all the best features of the top groups (especially the adjustable bearings on the hubs), just made of cheap 'n' cheerful alloy instead of carbon. |
#13
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SRAM Red BB Disassembly
damyth wrote:
Just to be clear, I'm no fan of ceramic myself, Derk wrote: In an article in TOUR about resistance in the drivetrain, the author stated that ceramic bearings really bring you next to nothing and are a waste of money. It was also said that ceramic bearings belong where other bearings fail, because of extreme heat or very high RPM. Steel balls almost never shatter when overly tightened. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 ** Posted from http://www.teranews.com ** |
#14
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SRAM Red BB Disassembly
In article
, Hank wrote: On May 26, 5:41 am, "Qui si parla Campagnolo-www.vecchios.com" wrote: BTW-I think the Centaur design for 2007 was a huge mistake. You mean the downgrade of the hubs and shifters in exchange for a few carbon bits? I like how the 2007 Centaur RD, with its carbon outer link is actually HEAVIER than the prior model, because it has the solid top knuckle, instead of the 2-beam one. And how the Centaur carbon UT crank has the cheap stamped "Exa-Drive" chainrings of Veloce and below, while the aluminum crank still has the good forged "Ultra- Drive" rings. That's why my Guerciotti is equipped with old Centaur, except for the aluminum UT crank. I wouldn't turn down a set of the skeleton brakes, but the old ones were $35 on closeout. An excellent, no-nonsense group with all the best features of the top groups (especially the adjustable bearings on the hubs), just made of cheap 'n' cheerful alloy instead of carbon. IT WAS ALL DOWNHILL AFTER RECORD-9 Ti! I HAVE THE LAST, BEST GROUPO EVER MADE! No, seriously, I feel the pain of those who like last year's model the best, but it's funny. On one hand, I really like brifters (and I prefer Campy's design to Shimano's, though not enough to not have STI-bikes), and on the other hand, I ride a commuter bike with friction shifting across 5 rear cogs. The dirty secret is how simple and pleasant that bike is. With 5 widely-spaced cogs, friction shifting is no big deal. It doesn't have nice ramps, pins, missing teeth, or hyper-shaped cogs, so sometimes the shifting is a little slow, especially since I don't lube the derailers much and thus they sometimes are dirty and balky about the small cog and ring. Oh well. They just work, and they cause no fuss. Like I said, I like brifters a lot, but only when I'm racing. For actual riding around town, The old two-DTs-and-no-fuss has much to recommend it. I'm also experimenting with an Alfine 8 hub, and it's...really cool! I'm not sure it's cool enough to take over from Sora as the commuter geartrain of choice, but it's fun. -- Ryan Cousineau http://www.wiredcola.com/ "In other newsgroups, they killfile trolls." "In rec.bicycles.racing, we coach them." |
#15
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SRAM Red BB Disassembly
On May 26, 10:29*am, Hank wrote:
On May 26, 5:41 am, "Qui si parla Campagnolo-www.vecchios.com" wrote: BTW-I think the Centaur design for 2007 was a huge mistake. You mean the downgrade of the hubs and shifters in exchange for a few carbon bits? I like how the 2007 Centaur RD, with its carbon outer link is actually HEAVIER than the prior model, because it has the solid top knuckle, instead of the 2-beam one. And how the Centaur carbon UT crank has the cheap stamped "Exa-Drive" chainrings of Veloce and below, while the aluminum crank still has the good forged "Ultra- Drive" rings. Yep, the innards of the shifters are ala Xenon. They took Veloce bits, added carbon and called it Centaur. That's why my Guerciotti is equipped with old Centaur, except for the aluminum UT crank. I wouldn't turn down a set of the skeleton brakes, but the old ones were $35 on closeout. An excellent, no-nonsense group with all the best features of the top groups (especially the adjustable bearings on the hubs), just made of cheap 'n' cheerful alloy instead of carbon. We still can get most of the 2006 Centaur stuff altho prices for ERGO and hubs have skyrocketed. |
#16
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SRAM Red BB Disassembly
On May 26, 1:29*pm, Ryan Cousineau wrote:
In article , *Hank wrote: On May 26, 5:41 am, "Qui si parla Campagnolo-www.vecchios.com" wrote: BTW-I think the Centaur design for 2007 was a huge mistake. You mean the downgrade of the hubs and shifters in exchange for a few carbon bits? I like how the 2007 Centaur RD, with its carbon outer link is actually HEAVIER than the prior model, because it has the solid top knuckle, instead of the 2-beam one. And how the Centaur carbon UT crank has the cheap stamped "Exa-Drive" chainrings of Veloce and below, while the aluminum crank still has the good forged "Ultra- Drive" rings. That's why my Guerciotti is equipped with old Centaur, except for the aluminum UT crank. I wouldn't turn down a set of the skeleton brakes, but the old ones were $35 on closeout. An excellent, no-nonsense group with all the best features of the top groups (especially the adjustable bearings on the hubs), just made of cheap 'n' cheerful alloy instead of carbon. IT WAS ALL DOWNHILL AFTER RECORD-9 Ti! I HAVE THE LAST, BEST GROUPO EVER MADE! Nope I have the best made, 1989 C-Record/Delta and also 1987 Suoper Record. No, seriously, I feel the pain of those who like last year's model the best, but it's funny. On one hand, I really like brifters (and I prefer Campy's design to Shimano's, though not enough to not have STI-bikes), and on the other hand, I ride a commuter bike with friction shifting across 5 rear cogs. The dirty secret is how simple and pleasant that bike is. With 5 widely-spaced cogs, friction shifting is no big deal. It doesn't have nice ramps, pins, missing teeth, or hyper-shaped cogs, so sometimes the shifting is a little slow, especially since I don't lube the derailers much and thus they sometimes are dirty and balky about the small cog and ring. Oh well. They just work, and they cause no fuss. Like I said, I like brifters a lot, but only when I'm racing. For actual riding around town, The old two-DTs-and-no-fuss has much to recommend it. I'm also experimenting with an Alfine 8 hub, and it's...really cool! I'm not sure it's cool enough to take over from Sora as the commuter geartrain of choice, but it's fun. -- Ryan Cousineau / "In other newsgroups, they killfile trolls." "In rec.bicycles.racing, we coach them." |
#17
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SRAM Red BB Disassembly
On May 26, 6:50*am, Derk wrote:
damyth wrote: Just to be clear, I'm no fan of ceramic myself, In an article in TOUR about resistance in the drivetrain, the author stated that ceramic bearings really bring you next to nothing and are a waste of money. It was also said that ceramic bearings belong where other bearings fail, because of extreme heat or very high RPM. Derk 'Worth' is a big word and the money spent on ceramics, by the 'why train when you buy speed' crowd, may seem worth it to them. Placebo is another big word. As I have said more than once, significant performance gains come from 4 things, all starting with 'F' and none of them involve the bike -bike Fit -Fat, lackthereof on you(Lemond called it being 'artificially light, Lance found out too) -Fitness-being fiy -Finese-riding/racing smart |
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