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Chain wear and cassette question
To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5%
stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 -- Regards, Joerg http://www.analogconsultants.com/ |
#2
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Chain wear and cassette question
On Saturday, November 10, 2018 at 12:51:38 PM UTC-8, Joerg wrote:
To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 -- Regards, Joerg http://www.analogconsultants.com/ With the Sunrace, the big cogs are not on a carrier, so you can talk it apart. It looks like it has one torx screw. http://www.sunrace.com/en/products/detail/csm680 |
#3
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Chain wear and cassette question
On 2018-11-10 14:49, jbeattie wrote:
On Saturday, November 10, 2018 at 12:51:38 PM UTC-8, Joerg wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 -- Regards, Joerg http://www.analogconsultants.com/ With the Sunrace, the big cogs are not on a carrier, so you can talk it apart. It looks like it has one torx screw. http://www.sunrace.com/en/products/detail/csm680 Cool. Thanks, then in can be done. I wonder why they often sell derailer hanger adapters for that. Maybe even the long cage derailers aren't long enough for 40T? Should work on my road bike though because it has adjustable slot drop-outs and I already had to scoot it forward to make the Shimano 600 derailer handle 32T (it's normally limited to 28T). -- Regards, Joerg http://www.analogconsultants.com/ |
#4
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Chain wear and cassette question
On Sat, 10 Nov 2018 12:51:48 -0800, Joerg
wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 My rather limited experience has been that the cassettes with the larger cogs usually have the largest 3 or 4 cogs riveted to a hub that connects them to the free hub so yes you can hack them if you accept the size and spacing of the largest three, or so, cogs. Some time ago I think you talked about using friction shifters and if you do that then the spacing of the cassette is no longer relevant as the friction shifters will shift any cassette. cheers, John B. |
#5
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Chain wear and cassette question
On 2018-11-10 14:53, John B. slocomb wrote:
On Sat, 10 Nov 2018 12:51:48 -0800, Joerg wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 My rather limited experience has been that the cassettes with the larger cogs usually have the largest 3 or 4 cogs riveted to a hub that connects them to the free hub so yes you can hack them if you accept the size and spacing of the largest three, or so, cogs. Yes, some cassettes are like that, such as the one on my MTB. I never saw an 8-speed like that though. Some time ago I think you talked about using friction shifters and if you do that then the spacing of the cassette is no longer relevant as the friction shifters will shift any cassette. It will but I'd like to stay with the sturdier 5-6-7 speed chains for the road bike. That reduces maintance. -- Regards, Joerg http://www.analogconsultants.com/ |
#6
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Chain wear and cassette question
On Saturday, November 10, 2018 at 2:53:28 PM UTC-8, John B. slocomb wrote:
On Sat, 10 Nov 2018 12:51:48 -0800, Joerg wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 My rather limited experience has been that the cassettes with the larger cogs usually have the largest 3 or 4 cogs riveted to a hub that connects them to the free hub so yes you can hack them if you accept the size and spacing of the largest three, or so, cogs. Some time ago I think you talked about using friction shifters and if you do that then the spacing of the cassette is no longer relevant as the friction shifters will shift any cassette. cheers, John B. I was repairing a friend's bike yesterday and he uses a 10 speed 12-34 and the lower 8 speeds of the Deore cassette were all rivetted together. I didn't like the cassette or the long arm derailleur that goes with it. |
#8
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Chain wear and cassette question
On Tuesday, November 20, 2018 at 7:24:13 AM UTC-8, Joerg wrote:
On 2018-11-18 10:17, wrote: On Saturday, November 10, 2018 at 2:53:28 PM UTC-8, John B. slocomb wrote: On Sat, 10 Nov 2018 12:51:48 -0800, Joerg wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 My rather limited experience has been that the cassettes with the larger cogs usually have the largest 3 or 4 cogs riveted to a hub that connects them to the free hub so yes you can hack them if you accept the size and spacing of the largest three, or so, cogs. Some time ago I think you talked about using friction shifters and if you do that then the spacing of the cassette is no longer relevant as the friction shifters will shift any cassette. cheers, John B. I was repairing a friend's bike yesterday and he uses a 10 speed 12-34 and the lower 8 speeds of the Deore cassette were all rivetted together. I didn't like the cassette or the long arm derailleur that goes with it. Yesterday I received the big Sunrace cassette, including new derailer and derailer extender. The cassette has only one screw and it almost fell into pieces when I dragged it out of its box. Not a problem, just strange. It's huge, almost the diameter of a dessert plate. This week's ride got smoked out (literally) and then it's suposed to begin to rain on Wednesday. So maybe some time to do the cassette hack unless something on the honey-do lits wins. Like the pool sweep that just quit. Told you it just looked like single screw and some locating pins -- if any pins. My tale of woe (stupidity): the Vuelta Corsa SLX disc rear that I got from Nashbar dirt-cheap suffered a broken spoke -- rear drive side. The wheel is amazingly robust for an el-cheapo prefab wheel, and the break is totally my fault. I threw on an old rear derailleur last year because the previous old rear derailleur finally wore out. The bike has been the sump for all my old, used parts. Anyway, I was in a hurry, threw it on, took off and overshifted into the spokes. Deja vu 1978. I scarred up the outbound spokes badly and one finally broke. Now I have to find a suitable replacement(s), which will be difficult from my vast used spoke collection because they are all too long. I'll probably have to buy a few from Universal. -- Jay Beattie. |
#9
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Chain wear and cassette question
On 11/20/2018 10:36 AM, jbeattie wrote:
On Tuesday, November 20, 2018 at 7:24:13 AM UTC-8, Joerg wrote: On 2018-11-18 10:17, wrote: On Saturday, November 10, 2018 at 2:53:28 PM UTC-8, John B. slocomb wrote: On Sat, 10 Nov 2018 12:51:48 -0800, Joerg wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 My rather limited experience has been that the cassettes with the larger cogs usually have the largest 3 or 4 cogs riveted to a hub that connects them to the free hub so yes you can hack them if you accept the size and spacing of the largest three, or so, cogs. Some time ago I think you talked about using friction shifters and if you do that then the spacing of the cassette is no longer relevant as the friction shifters will shift any cassette. cheers, John B. I was repairing a friend's bike yesterday and he uses a 10 speed 12-34 and the lower 8 speeds of the Deore cassette were all rivetted together. I didn't like the cassette or the long arm derailleur that goes with it. Yesterday I received the big Sunrace cassette, including new derailer and derailer extender. The cassette has only one screw and it almost fell into pieces when I dragged it out of its box. Not a problem, just strange. It's huge, almost the diameter of a dessert plate. This week's ride got smoked out (literally) and then it's suposed to begin to rain on Wednesday. So maybe some time to do the cassette hack unless something on the honey-do lits wins. Like the pool sweep that just quit. Told you it just looked like single screw and some locating pins -- if any pins. My tale of woe (stupidity): the Vuelta Corsa SLX disc rear that I got from Nashbar dirt-cheap suffered a broken spoke -- rear drive side. The wheel is amazingly robust for an el-cheapo prefab wheel, and the break is totally my fault. I threw on an old rear derailleur last year because the previous old rear derailleur finally wore out. The bike has been the sump for all my old, used parts. Anyway, I was in a hurry, threw it on, took off and overshifted into the spokes. Deja vu 1978. I scarred up the outbound spokes badly and one finally broke. Now I have to find a suitable replacement(s), which will be difficult from my vast used spoke collection because they are all too long. I'll probably have to buy a few from Universal. http://www.yellowjersey.org/fiberfix.html I had two of those in my winter fixie wheel* for 5~6 years until the volume of dents reached a point where a new wheel made sense. *other damage prevented sprocket removal -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#10
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Chain wear and cassette question
On 2018-11-20 08:36, jbeattie wrote:
On Tuesday, November 20, 2018 at 7:24:13 AM UTC-8, Joerg wrote: On 2018-11-18 10:17, wrote: On Saturday, November 10, 2018 at 2:53:28 PM UTC-8, John B. slocomb wrote: On Sat, 10 Nov 2018 12:51:48 -0800, Joerg wrote: To my amazement a Sachs-Sedis chain will absolutely not exceed 0.5% stretch after more than 5000mi, despite some hills where one has to stand in the pedals. Never had a chain last this long. However, the rollers have developed a lot of play, about 0.040" or 1mm. How much is too much? I guess it's almost finished because of those rollers. Getting older, I'd like to increase the large cog to at least 40T from my current 32T. Of course, that will require me to retire the trusty old Shimano 600 derailer. I don't want the cassette to become ever wider and also need to maintain 7-speed spacing so I can use the more robust old-style 7.3mm pin length chains such as KMC Z50 (can't find the Sachs anymore). In the past I hacked cassettes, installed the cogs I wanted and re-used the old spacers. Can the larger cassettes like in the link below still be hacked apart? I don't mind drilling or dremeling stuff to get them apart. If memory serves me correctly I've installed a Shimano STX-RC freehub on the road bike after the last UG freehub had croaked. https://www.ebay.com/itm/SunRace-CSM...k/132325285327 My rather limited experience has been that the cassettes with the larger cogs usually have the largest 3 or 4 cogs riveted to a hub that connects them to the free hub so yes you can hack them if you accept the size and spacing of the largest three, or so, cogs. Some time ago I think you talked about using friction shifters and if you do that then the spacing of the cassette is no longer relevant as the friction shifters will shift any cassette. cheers, John B. I was repairing a friend's bike yesterday and he uses a 10 speed 12-34 and the lower 8 speeds of the Deore cassette were all rivetted together. I didn't like the cassette or the long arm derailleur that goes with it. Yesterday I received the big Sunrace cassette, including new derailer and derailer extender. The cassette has only one screw and it almost fell into pieces when I dragged it out of its box. Not a problem, just strange. It's huge, almost the diameter of a dessert plate. This week's ride got smoked out (literally) and then it's suposed to begin to rain on Wednesday. So maybe some time to do the cassette hack unless something on the honey-do lits wins. Like the pool sweep that just quit. Told you it just looked like single screw and some locating pins -- if any pins. There are two more locations, seems they just didn't put them in. Oh well. However, a pump broke so I've got some other work cut out for me first :-( My tale of woe (stupidity): the Vuelta Corsa SLX disc rear that I got from Nashbar dirt-cheap suffered a broken spoke -- rear drive side. The wheel is amazingly robust for an el-cheapo prefab wheel, and the break is totally my fault. I threw on an old rear derailleur last year because the previous old rear derailleur finally wore out. The bike has been the sump for all my old, used parts. Anyway, I was in a hurry, threw it on, took off and overshifted into the spokes. Deja vu 1978. I scarred up the outbound spokes badly and one finally broke. Now I have to find a suitable replacement(s), which will be difficult from my vast used spoke collection because they are all too long. I'll probably have to buy a few from Universal. Though shalt not ride off without properly adjusting the limit screws, even with index shifters. -- Regards, Joerg http://www.analogconsultants.com/ |
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