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#1
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chain stretch question
I was going over my bike today and slight adjusting of the the front
dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. Over 12 inch span the links exact on the mark. It is a shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. -- Deacon Mark Cleary Epiphany Roman Catholic Church |
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#2
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chain stretch question
On Nov 14, 10:15*pm, Mark Cleary wrote:
At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. As I'm sure Jobst will be happy to point out, motorcycle primary chains last tens of thousands of miles: mostly because they run in a protected environment. If, for some reason, your chain sees very little dirt, grit, rain, what-not, that is to say, if the lubricant inside the chain remains reasonably clean and intact, you should get plenty more than 3000 miles out of a chain. Personally, & given that a bicycle is my primary trans- port, a $12 chain now and again is peanuts to use the bicycle any time I please, rather than try to baby it and avoid filth or smut or moth & rust. (Does that above make sense? I'm a couple of drinks in and it scan fine to me, but there's a nagging doubt) |
#3
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chain stretch question
Jobst Brandt wrote:
Mark Cleary wrote: I was going over my bike today and slight adjusting of the the front derailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. Over 12 inch span the links exact on the mark. It is a Shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. The term "chain stretch" is misleading and inaccurate. Chains do not stretch from use, they wear at their pins and this small amount of wear allows the chain to increase its span from pin to pin. No steel on the chain has elongated, only worn away. http://www.sheldonbrown.com/brandt/chain-care.html4 Jobst Brandt Jobst I know that I read your article a long time ago. It appears that dirt is the big factor in chain wear. It is interesting that water is a lubricant and it certainly is but I guess I see it as an enemy of rust. -- Deacon Mark Cleary Epiphany Roman Catholic Church |
#4
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chain stretch question
Mark Cleary wrote:
Jobst Brandt wrote: Mark Cleary wrote: I was going over my bike today and slight adjusting of the the front derailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. Over 12 inch span the links exact on the mark. It is a Shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. The term "chain stretch" is misleading and inaccurate. Chains do not stretch from use, they wear at their pins and this small amount of wear allows the chain to increase its span from pin to pin. No steel on the chain has elongated, only worn away. http://www.sheldonbrown.com/brandt/chain-care.html4 Jobst Brandt Jobst I know that I read your article a long time ago. It appears that dirt is the big factor in chain wear. It is interesting that water is a lubricant and it certainly is but I guess I see it as an enemy of rust. I think it is a friend of rust ;-) |
#5
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chain stretch question
Mark Cleary schreef:
I was going over my bike today and slight adjusting of the the front dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. Over 12 inch span the links exact on the mark. It is a shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. You ride in very mild condition in a very chain friendly manor, so no surpise to me that you didn't measure any chain 'stretch'. I ride when it rains but keep my chain in a good condition and this what I measured over 106 links after 3700 km, hanging the used chain next to a new one: http://picasaweb.google.nl/LoetjeH/ChainAfter3700km# My chain last at least 8000 km on my road bikes. Lou |
#6
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chain stretch question
On Nov 14, 8:15*pm, Mark Cleary wrote:
I was going over my bike today and slight adjusting of the the front dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. * Over 12 inch span the links exact on the mark. It is a shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. -- Deacon Mark Cleary * * * * * * * Epiphany Roman Catholic Church Not unusual for a clean, lubed chain not pushed by some gigantic rider while cross chaining all the time up hill. BUT remember, chain onto cogs is still metal on metal and the cogs will wear with time. |
#7
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chain stretch question
On Nov 14, 9:15*pm, Mark Cleary wrote:
I was going over my bike today and slight adjusting of the the front dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. Check it again after a thousand more miles with a Park chain checker. They're a little more accurate than a ruler as they check the chain with a bit of tension applied. |
#8
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chain stretch question
On 15 Nov, 07:28, Lou Holtman wrote:
Mark Cleary schreef: I was going over my bike today and slight adjusting of the the front dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. *Over 12 inch span the links exact on the mark. It is a shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit.. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. |
#9
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chain stretch question
On 15 Nov, 13:03, Qui si parla Campagnolo wrote:
On Nov 14, 8:15*pm, Mark Cleary wrote: I was going over my bike today and slight adjusting of the the front dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. I did not expect much but this is spot on every link lines up on my metal ruler that goes down in 1/32 inches. * Over 12 inch span the links exact on the mark. It is a shimano 5600 narrow 10 speed chain and I know chains can last depends on how you ride. I have a compact crank and there are no real huge hills I push up in the flat lands. I almost never come up and pedal out of the saddle so I don't stomp on the chain and I keep in clean and lube it all the time. About the worst thing I do is with tailwinds and slight downhills I do try to see about how fast I can go but that is more spinning. I also never ride in the rain or bad conditions other than cold now in central Illinois. At the rate I am going this chain should go many more miles. Is this possible or common given the parameters of my riding? I get all kinds of things about changing the chain and seems about 2000 miles is the limit.. I would say at this point mine will last much longer. What do the experts here think or do some of you get that kind of mileage on a chain. |
#10
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chain stretch question
On 15 Nov, 16:53, landotter wrote:
On Nov 14, 9:15*pm, Mark Cleary wrote: I was going over my bike today and slight adjusting of the the front dérailleur and set up. I then cleaned the chain and decided to get a measurement of the chain. I have precision rulers and after 1300 miles on the chain there is no stretch. Check it again after a thousand more miles with a Park chain checker. They're a little more accurate than a ruler as they check the chain with a bit of tension applied. Accuracy in measurement is not really required and tensioning the chain on the bike and using a steel rule is adequate. The rivet at 12" can be displaced by 1/8" without probleming the mechanicals. How it troubles your mind is a different matter. I measure my chains to make sure that when I swap them I'm not putting on a longer one. They stay on until the one that's on squeaks at which point I swap it for a ready lubricated one. Usually just soaked in oil now. It seems that drowning a chain with oil and leaving it a few months to pickle gives good service without resort to any real effort after cleaning.. |
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