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Schram cassettes
On Friday, May 14, 2021 at 5:34:01 AM UTC-7, AMuzi wrote:
On 5/13/2021 10:22 PM, Mark J. wrote: On 5/13/2021 6:11 PM, AMuzi wrote: On 5/13/2021 5:41 PM, Tom Kunich wrote: On Tuesday, May 11, 2021 at 4:10:48 PM UTC-7, AMuzi wrote: On 5/11/2021 5:42 PM, Tom Kunich wrote: On Tuesday, May 11, 2021 at 12:23:39 PM UTC-7, AMuzi wrote: On 5/11/2021 1:18 PM, Mark cleary wrote: I have never been a Schram person also Shimano. I notice that Schram 11 speed cassettes are cheaper and more easily had these days. I have always used a full shimano drivetrain and shifting for me has always been good. My question is if a schram cassette 11 sp. shifts as well as the Shimano cassette on an all shimano drivetrain. I realize they are compatible but is there any downside on the performance?/ I am not worried about price if peformance is better on Shimano I will gladly pay. My instincts tell me a all Shimano will be that much better? Deacon mark Fits and shifts the same. Ditto SunRace, IRD and S-Ride. Suntour ROC seem to be scarce or gone but they were also fine at a great price last year. Note fancy carriers, rivetted carrier assemblies, one-piece-milled aluminum designs etc may be lighter but won't shift any differently when new. Although expensive, aluminum sprockets wear faster. Maybe it was back at 8 and 9 speeds but isn't the spacing of SRAM cassettes spaced "progressively"? Suntour was spaced that way. For 8, 10 11, 12 Campagnolo is spaced differently from Shimnao/SRAM/SunRace etc. Oddly nines are just nines- either cassette format works well in both systems. So Shimano has different spacing between the cogs of the 8's 9's and 10's? Campy is all the same from 8 to 10. AFAIK all Shimano, SRAM and Campagnolo cassettes are evenly spaced. That is to say the distance between an 11 and a 12 is the same space as between a 28 and a 32 on the same cassette. I don't think that's exactly true, at least not for Campy 10s, see the link below. Though maybe the different-width spacers combine with shaped cogs to result in equal spacing between the cogs at the outer edge / teeth. http://www.rumplefyke.com/downloads/centaursp.jpg (First example I could find, but I've got the same image downloaded direct from campagnolo.com) Had to use that diagram after I cleaned a loose Campy cassette and realized belatedly that the spacers were not all the same as I fished them out of solvent. They do, IIRC, have identifying marks distinguishing them. I think the 9sp Campys had all spacers the same, though. Mark J. Yes sprocket thickness and shape requires different spacers to attain even sprocket spacing in Campagnolo Ten cassettes. BTW an elegant design, in that the low gear overhangs the base of the cassette body. Clever! Rather than elegant I would say it was an easy fix for a difficult problem. |
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#12
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Schram cassettes
On 5/14/2021 5:33 AM, AMuzi wrote:
On 5/13/2021 10:22 PM, Mark J. wrote: On 5/13/2021 6:11 PM, AMuzi wrote: On 5/13/2021 5:41 PM, Tom Kunich wrote: On Tuesday, May 11, 2021 at 4:10:48 PM UTC-7, AMuzi wrote: On 5/11/2021 5:42 PM, Tom Kunich wrote: On Tuesday, May 11, 2021 at 12:23:39 PM UTC-7, AMuzi wrote: On 5/11/2021 1:18 PM, Mark cleary wrote: I have never been a Schram person also Shimano. I notice that Schram 11 speed cassettes are cheaper and more easily had these days. I have always used a full shimano drivetrain and shifting for me has always been good. My question is if a schram cassette 11 sp. shifts as well as the Shimano cassette on an all shimano drivetrain. I realize they are compatible but is there any downside on the performance?/ I am not worried about price if peformance is better on Shimano I will gladly pay. My instincts tell me a all Shimano will be that much better? Deacon mark Fits and shifts the same. Ditto SunRace, IRD and S-Ride. Suntour ROC seem to be scarce or gone but they were also fine at a great price last year. Note fancy carriers, rivetted carrier assemblies, one-piece-milled aluminum designs etc may be lighter but won't shift any differently when new. Although expensive, aluminum sprockets wear faster. Maybe it was back at 8 and 9 speeds but isn't the spacing of SRAM cassettes spaced "progressively"? Suntour was spaced that way. For 8, 10 11, 12 Campagnolo is spaced differently from Shimnao/SRAM/SunRace etc. Oddly nines are just nines- either cassette format works well in both systems. So Shimano has different spacing between the cogs of the 8's 9's and 10's? Campy is all the same from 8 to 10. AFAIK all Shimano, SRAM and Campagnolo cassettes are evenly spaced. That is to say the distance between an 11 and a 12 is the same space as between a 28 and a 32 on the same cassette. I don't think that's exactly true, at least not for Campy 10s, see the link below.Â* Though maybe the different-width spacers combine with shaped cogs to result in equal spacing between the cogs at the outer edge / teeth. http://www.rumplefyke.com/downloads/centaursp.jpg (First example I could find, but I've got the same image downloaded direct from campagnolo.com) Had to use that diagram after I cleaned a loose Campy cassette and realized belatedly that the spacers were not all the same as I fished them out of solvent.Â* They do, IIRC, have identifying marks distinguishing them. I think the 9sp Campys had all spacers the same, though. Mark J. Yes sprocket thickness and shape requires different spacers to attain even sprocket spacing in Campagnolo Ten cassettes. BTW an elegant design, in that the low gear overhangs the base of the cassette body. Clever! That's definitely the case with the "P" spacer in the diagram. The difference between the "Q" and "O" spacers, though, doesn't seem to fit that explanation. IIRC from hand assembly, the relevant cogs there are flat, not dished like the biggest cog. Mark J. |
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