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#101
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Why is Shimano so hated by some?
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#102
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Why is Shimano so hated by some?
The first time I snapped off a Shimano bottom bracket spindle, I
weighed 240 lbs. or so. I figured maybe there was something wrong with the particular part I had; clearly for a BB spindle to just snap off is not an acceptable failure mode under ordinary use, right? I was advised to replace it with a Deore XT spindle, which was generally acknowledged by the bike shop guys I knew as the strongest and best available. I fitted Deore XT bottom brackets to both my bikes, keeping to the type even after cartridge BBs came available, because neither I nor the most experienced bike shop guys I knew considered the cartridge kind to be as strong as the older loose-ball type. When I snapped one of those, I weighed about 270 lbs. I broke my nose and maxilla and lost several teeth in the process. I began to recognize that my size made me part of the population that Shimano with their thorough engineering had intentionally opted not to serve. hey chalo you definitely have reason not to like shimano, but let's do some analysis: following one of your comments yesterday, i did a quick google for broken shimano bb's on this group - not much showed up except for references to old ball-style campy spindles of the same style you've just described. i would expect this because, theoretically, the modern larger diameter shimano spindles should be better in both bending and torsion. i don't have the tools to measure without cutting it open, but the ultegra bb i have has an axle of 22.0mm o/d and 5.0mm wall thickness as best as i can tell. with a pedal torque of 100N/m, my rusty math gives a shear stress on the axle exterior surface of 52GPa. with a 16.0mm solid axle, the same pedal torque will give 124GPa at the surface. neither are excessively high, but clearly the larger diameter spindle is the way to go. what do you ride today? have you tried one of these larger diameter axles? jb |
#103
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Why is Shimano so hated by some?
Tim McNamara wrote:
A Muzi writes: Even after the Euro increase, Campagnolo is still cheaper at every level than Shimano for new equipment. The $600 gap from Chorus to DA will be $450 next year. If you factor maintenance costs there's a wider gap. Except that Chorus and Dura-Ace are not in equivalent positions in their respective product lines. The Campy equivalent of Dura-Ace is Record; Chorus is the equivalent of Ultegra, etc. That said, I races on 1993 Chorus for 5 years and 1998 Chorus for 2 years, and found both superior to the Ultegra that preceded them. I personally think that Chorus is the equivalent in quality of Dura-Ace, but the Campy and Shimano groups should really be compared by equivalent position. So because Campagnolo's cheapest kit is Xenon, we should compare it to Tourney?? That's equally ridiculous. -- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971 |
#104
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Why is Shimano so hated by some?
Tim McNamara wrote:
Why not? Top of the line is top of the line, second in line is second in line. Dura-Ace is Shimano's professional class group, and Record is Campy's professional class gruppo. Ultegra is Shimano's amateur class group; Chorus is Campy's amateur class gruppo. And so down each product line. You are counting from the wrong direction: 105 = Veloce, Ultegra = Centaur, Dura-Ace = Chorus, Nothing = Record. Makes more sense because quality is about equal while yours is a mis-match. |
#105
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Why is Shimano so hated by some?
wrote in message et... Tim McNamara wrote: Why not? Top of the line is top of the line, second in line is second in line. Dura-Ace is Shimano's professional class group, and Record is Campy's professional class gruppo. Ultegra is Shimano's amateur class group; Chorus is Campy's amateur class gruppo. And so down each product line. You are counting from the wrong direction: 105 = Veloce, Ultegra = Centaur, Dura-Ace = Chorus, Nothing = Record. Makes more sense because quality is about equal while yours is a mis-match. This may be true, but in actuality, most consumers will do an analysis similar to Tim's and compare how the groups line up: Record to DA, Ultegra to Chorus, etc. Further, now that DA 10 is out, Shimano has decided to align its top-line group and price it at about the same price as Record, about $1500-1600 for the DA 10 group.... |
#106
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Why is Shimano so hated by some?
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#107
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Why is Shimano so hated by some?
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#108
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Why is Shimano so hated by some?
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#109
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Why is Shimano so hated by some?
A Muzi writes:
Tim McNamara wrote: A Muzi writes: Even after the Euro increase, Campagnolo is still cheaper at every level than Shimano for new equipment. The $600 gap from Chorus to DA will be $450 next year. If you factor maintenance costs there's a wider gap. Except that Chorus and Dura-Ace are not in equivalent positions in their respective product lines. The Campy equivalent of Dura-Ace is Record; Chorus is the equivalent of Ultegra, etc. That said, I races on 1993 Chorus for 5 years and 1998 Chorus for 2 years, and found both superior to the Ultegra that preceded them. I personally think that Chorus is the equivalent in quality of Dura-Ace, but the Campy and Shimano groups should really be compared by equivalent position. So because Campagnolo's cheapest kit is Xenon, we should compare it to Tourney?? That's equally ridiculous. That's why I started at the top- it makes more sense to compare Record and Dura-Ace, as they are competitors at the top of their respective lines. It just makes more sense to me to start from the top down. At the bottom end, Shimano simply has no competition- no one else wants to serve the Wal-Mart market. Xenon would probably compare to, what, Sora? Both Campagnolo and Shimano have changed their lines enough in the past 2-3 years that I no longer know which group follows which. I've got one bike with Campy Chorus Ergo (1998), and since then I've pretty much stopped paying attention to new stuff. The rest of my bikes have Sun Tour derailleurs (Cyclone GT on the touring/randonee bikes, Cyclone II on the 'cross bike, XC Pro on the All-Rounder; mainly Phil hubs with a couple of odd ones thrown in; mainly Ritchey 110/74 cranks with a Campy Athena from about 1993 and a new Truvativ/ISIS road crank on the folding bike replacing the original Dotek). If you buy well and maintain reasonably attentively, this stuff just about never wears out. |
#110
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Why is Shimano so hated by some?
David wrote:
Would you like to elaborate on the unusual requirements people need that Shimano does not offer? Shimano does not make MTB components while Campy does! Campy rulez!!! -- |
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