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#1
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Source for older style Campy chainring?
I need an older style campy 8 speed chainring, but all I see on the popular
mail order websites are the new thinner 9/10 rings. I'm guessing it would work, but since it's an inner ring I need I'm guessing it will shift poorly. Does anyone have suggestions? - Patrick |
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#2
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Source for older style Campy chainring?
Patrick W wrote: I need an older style campy 8 speed chainring, but all I see on the popular mail order websites are the new thinner 9/10 rings. I'm guessing it would work, but since it's an inner ring I need I'm guessing it will shift poorly. Does anyone have suggestions? - Patrick Yeah- read: http://sheldonbrown.com/speeds.html#chainrings Jeff |
#3
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Source for older style Campy chainring?
"Patrick W" writes:
I need an older style campy 8 speed chainring, but all I see on the popular mail order websites are the new thinner 9/10 rings. I'm guessing it would work, but since it's an inner ring I need I'm guessing it will shift poorly. Everything you need to know about 5-10 speed drivetrains is contained on one magical, indispensible web page maintained by Sheldon Brown : http://www.sheldonbrown.com/k7.html study it carefully. The "Sprocket Spacing" table gives you all the information you need to know. What matters the most is Sprocket (and therefore chainring) Thickness. While the outside of chains has been getting more narrow since Suntour invented the Ultra-6 freewheel in about 1974, Sprocket thickness has hardly budged, dropping from 1.85 mm in 1960 to 1.75mm for Campagnolo 10 in 2002. Shimano 10-speed at 1.6mm is an aberration - possibly they are trying to invalidate 50 years of backwards compatability - and you probably want to avoid Shimano 10-speed parts if at all possible. What CAN go wrong is that a late-model narrow chain can get stuck between the front chainrings on a vintage (5-6-7 speed) crankset - as these chainrings are spaced widely apart. In terms of the front spider on an 8-speed, perhaps in some cases, the take-up ramps/pins delay the shift briefly. As a previous message/url stated, this seldom happens in practice. Even if it happened in practice you could probably file down the flats of your spider to move the chainrings barely closer together, use a more narrow chain, and solve the problem. - Don Gillies San Diego, CA |
#4
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Source for older style Campy chainring?
Patrick W wrote: I need an older style campy 8 speed chainring, but all I see on the popular mail order websites are the new thinner 9/10 rings. I'm guessing it would work, but since it's an inner ring I need I'm guessing it will shift poorly. Does anyone have suggestions? - Patrick Inner rings didn't change for 10s, outers did. Niothing changed for 9s in terms of spacing. Use any inner 135mm inner ring, it will work fine. |
#5
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Source for older style Campy chainring?
Donald Gillies wrote:
"Patrick W" writes: I need an older style campy 8 speed chainring, but all I see on the popular mail order websites are the new thinner 9/10 rings. I'm guessing it would work, but since it's an inner ring I need I'm guessing it will shift poorly. Everything you need to know about 5-10 speed drivetrains is contained on one magical, indispensible web page maintained by Sheldon Brown : http://www.sheldonbrown.com/k7.html study it carefully. The "Sprocket Spacing" table gives you all the information you need to know. What matters the most is Sprocket (and therefore chainring) Thickness. While the outside of chains has been getting more narrow since Suntour invented the Ultra-6 freewheel in about 1974, Sprocket thickness has hardly budged, dropping from 1.85 mm in 1960 to 1.75mm for Campagnolo 10 in 2002. Shimano 10-speed at 1.6mm is an aberration - possibly they are trying to invalidate 50 years of backwards compatability - and you probably want to avoid Shimano 10-speed parts if at all possible. What CAN go wrong is that a late-model narrow chain can get stuck between the front chainrings on a vintage (5-6-7 speed) crankset - as these chainrings are spaced widely apart. In terms of the front spider on an 8-speed, perhaps in some cases, the take-up ramps/pins delay the shift briefly. As a previous message/url stated, this seldom happens in practice. My 1008 Wipperman Connex chain shifted (while downshifting) in between the chainrings on my 8-speed 105 cranks/chainrings. No damage but I was going at quite a clip. -- Phil, Squid-in-Training |
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