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#21
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In article ,
Mark Hickey wrote: Tom Sherman wrote: Peter Chisholm wrote: ... As for the crank, I think the ALUMINUM crank of either Chorus and Record, at MUCH less $ than DA or ultegra, with a really simple, very effective proven BB design is the way to go. SO MANY are swayed by the outside of the BB bearing crank, which answerts no \question, solves no problem with regard to the square taper BB/crank setup. PLEASE don't claim it is stiffer...it is when tested by a gorilla machine that exerts much more force than any human.... Peter, Are you saying that Chalo Colina is not human? I think we've been intimating that for years... his size alone pretty much disqualifies him. It's getting cold in here! But...equipment which is designed for Chalo's size and power is likely to be overdesigned for the majority of cyclists. He's so big and strong that he (or possibly Shaquille O'Neal, who is known to have a really big custom mountain bike) personally may be the extreme limit of size and strength among serious cyclists. Put more bluntly, there may be heavier cyclists than Chalo, but they're probably riding a lot less vigorously than him. Below average, -- Ryan Cousineau, http://www.wiredcola.com Verus de parvis; verus de magnis. |
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#22
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Tom Sherman wrote:
Peter Chisholm wrote: ... As for the crank, I think the ALUMINUM crank of either Chorus and Record, at MUCH less $ than DA or ultegra, with a really simple, very effective proven BB design is the way to go. SO MANY are swayed by the outside of the BB bearing crank, which answerts no \question, solves no problem with regard to the square taper BB/crank setup. PLEASE don't claim it is stiffer...it is when tested by a gorilla machine that exerts much more force than any human.... Peter, Are you saying that Chalo Colina is not human? I'm saying that he is certainly at the fringe of the rider bell curve. I don't think amnufacturers should build to his example. |
#23
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O5 Chorus sure is.
Get your own break. |
#24
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Qui si parla Campagnolo wrote:
As for the crank, I think the ALUMINUM crank of either Chorus and Record, at MUCH less $ than DA or ultegra, with a really simple, very effective proven BB design is the way to go. SO MANY are swayed by the outside of the BB bearing crank, which answerts no \question, solves no problem with regard to the square taper BB/crank setup. Outboard bearings address a major shortcoming in the threaded-shell BB, which is that there is not enough room for both an adequately large spindle and adequately large bearings inside the shell. The regular square taper spindle is just TOO SMALL, though you have yet to admit it. If a stem (or a seatpost, or a fork steerer, or a crank arm) had to be made from 1/4" thick forged and hardened steel to function without breaking, you would admit it was sized way too small for its job. Well, that's the way a square taper spindle is made, because it's way too small for the job. And it can't be made bigger without compromising the bearings' durability. Those thinks are bunk, Peter, just like cottered cranks are bunk, even though they were conventional at one time. There was a time when bike frames were made of solid steel bars, but in due course they were improved. BBs are being improved now, despite the complaints of those who for whatever reason prefer the old stuff. FWIW, I expect that square taper cranks and BBs are going to be an increasingly cheap bargain for a while as more and more folks get acquainted with the benefits of a better system. So count your blessings. You'll be able to pick up lightly used and NOS square taper cranks for a song after Campy changes over to tubular spindles. Just like with the slant pantograph derailleur and index shifting, their adaptation to a superior paradigm will be late, but they will catch up. PLEASE don't claim it is stiffer...it is when tested by a gorilla machine that exerts much more force than any human. Of course a large diameter spindle running in outboard bearings is stiffer, but "stiffer" does not necessarily equal "better" in every case. Excessive flex is just a side effect of the real structural problem, and whether it is a problem itself is a matter of taste. Chalo Colina |
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