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Strange problem with new chain
Okay here's the deal, I took the old and worn out chain was 1/16 past
the inch mark. Pretty well worn. And cleaned the wheels on the rear derailer. After cleaning the factory gunk they put on the chain to protect it while waiting to be sold, off the chain. Rinseing(sp) with water. Spaying with wd-40 to diplace the water letting the new chain dry, I tried the "hot wax" method using paraffin wax. Then let the chain cool, installed the new chain, using a KMC Missing Link I think it's called. And then test riding the bike. I noticed that the chain "skipped" like crazy when I tried to use the 4th and 5th gear! I thought to myself what did I do wrong?!? I stopped the ride looked it all over saw no obvious problems. So I thought well maybe the chain was just assembled a bit on the "tight" side and it just needs to be "worked" in a bit, so I shifted to 3rd and spun like crazy! Just before I got back home I tried to use 4th and it was doing the skipping thing still! So i brought it into the garage and spun the freewheel backwards and noticed nothing unusual. So then I thought maybe I did something wrong with the hot wax, I came in checked the website (sheldons) and it didn't seem like I did anything wrong. So then I got to thinking maybe my idler / jockey wheels are worn. I went and looked at them. They look a little worn but I don't think that they are worn enough to cause the skipping. The freewheel is okay I just cleaned and inspected and lubed it all about 450-500 miles ago when I replaced the rear wheel. So after all of that I thought maybe it's just the wax!! So I cleaned what wax I could off / out of the chain. And went back to my wet lube (2 stroke engine oil) Just a drop on the center rollers. Took the bike for another "test" ride. Still skipping under a load! Only does it when pushing harder than I normally do! So the bike went back into the workshop. And I went 1 step further and lubed the sideplates of the chain. And that is where the problem is at! I have not riden the bike with the lubed sideplates. Any ideas, comments or suggestions?? Ken |
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#2
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Strange problem with new chain
On 1 Jul 2005 15:43:15 -0700, "Ken M"
wrote: Okay here's the deal, I took the old and worn out chain was 1/16 past the inch mark. Pretty well worn. And cleaned the wheels on the rear derailer. After cleaning the factory gunk they put on the chain to protect it while waiting to be sold, off the chain. Rinseing(sp) with water. Spaying with wd-40 to diplace the water letting the new chain dry, I tried the "hot wax" method using paraffin wax. Then let the chain cool, installed the new chain, using a KMC Missing Link I think it's called. And then test riding the bike. I noticed that the chain "skipped" like crazy when I tried to use the 4th and 5th gear! I thought to myself what did I do wrong?!? I stopped the ride looked it all over saw no obvious problems. So I thought well maybe the chain was just assembled a bit on the "tight" side and it just needs to be "worked" in a bit, so I shifted to 3rd and spun like crazy! Just before I got back home I tried to use 4th and it was doing the skipping thing still! So i brought it into the garage and spun the freewheel backwards and noticed nothing unusual. So then I thought maybe I did something wrong with the hot wax, I came in checked the website (sheldons) and it didn't seem like I did anything wrong. So then I got to thinking maybe my idler / jockey wheels are worn. I went and looked at them. They look a little worn but I don't think that they are worn enough to cause the skipping. The freewheel is okay I just cleaned and inspected and lubed it all about 450-500 miles ago when I replaced the rear wheel. So after all of that I thought maybe it's just the wax!! So I cleaned what wax I could off / out of the chain. And went back to my wet lube (2 stroke engine oil) Just a drop on the center rollers. Took the bike for another "test" ride. Still skipping under a load! Only does it when pushing harder than I normally do! So the bike went back into the workshop. And I went 1 step further and lubed the sideplates of the chain. And that is where the problem is at! I have not riden the bike with the lubed sideplates. Any ideas, comments or suggestions?? Ken Dear Ken, The instant skipping with a new chain when you pedal hard in higher gears suggests that your smaller rear gears are worn and need to be replaced, even though the tooth wear may not be obvious at a glance. Those gears tend to wear faster and skip first. Carl Fogel |
#3
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Strange problem with new chain
And I went 1 step further and lubed the sideplates of the
chain. And that is where the problem is at! I have not riden the bike with the lubed sideplates. Any ideas, comments or suggestions?? Ken Sounds likely that your rear cogs are worn out (4th and 5th gear)... a new chain will skip on worn cogs under heavy load. -Ron |
#4
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Strange problem with new chain
Ken M wrote:
Okay here's the deal, I took the old and worn out chain was 1/16 past the inch mark. Pretty well worn. And cleaned the wheels on the rear derailer. After cleaning the factory gunk they put on the chain to protect it while waiting to be sold This is a perfectly good lubricant. Bike shops don't do anything to the chains on new bikes. , off the chain. Rinseing(sp) with water. Spaying with wd-40 to diplace the water letting the new chain dry, I tried the "hot wax" method using paraffin wax. You forgot to wave the dead chicken over it ;-) Then let the chain cool, installed the new chain, using a KMC Missing Link I think it's called. And then test riding the bike. I noticed that the chain "skipped" like crazy when I tried to use the 4th and 5th gear! I thought to myself what did I do wrong?!? I stopped the ride looked it all over saw no obvious problems. So I thought well maybe the chain was just assembled a bit on the "tight" side and it just needs to be "worked" in a bit, so I shifted to 3rd and spun like crazy! Just before I got back home I tried to use 4th and it was doing the skipping thing still! So i brought it into the garage and spun the freewheel backwards and noticed nothing unusual. So then I thought maybe I did something wrong with the hot wax, I came in checked the website (sheldons) and it didn't seem like I did anything wrong. So then I got to thinking maybe my idler / jockey wheels are worn. I went and looked at them. They look a little worn but I don't think that they are worn enough to cause the skipping. Check the top one doesn't rock out of plane excessively. It should slide sideways but remain vertical at all times. The freewheel is okay I just cleaned and inspected and lubed it all about 450-500 miles ago when I replaced the rear wheel. This is quite hard to do, as the kind of wear you're looking for is minimal. Chainrings can go really shark-toothed and still work OK (the state of Jobst's has been the subject of discussion here recently), but rear sprockets can't. So after all of that I thought maybe it's just the wax!! So I cleaned what wax I could off / out of the chain. And went back to my wet lube (2 stroke engine oil) Just a drop on the center rollers. Took the bike for another "test" ride. Still skipping under a load! Only does it when pushing harder than I normally do! So the bike went back into the workshop. And I went 1 step further and lubed the sideplates of the chain. And that is where the problem is at! I have not riden the bike with the lubed sideplates. Any ideas, comments or suggestions?? Yup. Get a new cassette/freewheel, as the old one has worn to match the old chain. I had the same problem recently - the chain had gone that tiny bit too far and the bike was noisy in the most-used 17T sprocket. Shame Shimano don't sell individual ones :-( |
#5
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Strange problem with new chain
Well I took the suspect freewheel off the wheel, put it next to another
I happened to have and when side by side the wear could easily be seen. The teeth didn't look that worn but the "valley" between the teeth was defiantely wider and deeper in on the smaller (higher) gears than on the lower (larger) cogs. But now I have a better idea what too look for the next time I inspect a freewheel. Ken |
#6
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Strange problem with new chain
On 2 Jul 2005 12:41:40 -0700, "Ken M"
wrote: Well I took the suspect freewheel off the wheel, put it next to another I happened to have and when side by side the wear could easily be seen. The teeth didn't look that worn but the "valley" between the teeth was defiantely wider and deeper in on the smaller (higher) gears than on the lower (larger) cogs. But now I have a better idea what too look for the next time I inspect a freewheel. Ken Dear Ken, Pretty much if you can see wear on small cogs, they'll slip when you pedal hard. For some years, I rode an old Schwinn 52-front-sprocket that ate a Sachs-Aris 12-tooth cog every 3 to 6 months. The edges of the tooth would mush slightly outward. Once I learned about this, I never bothered to inspect a cog again--I just replaced it when the chain began to skip. This led to over a dozen worn-out 12-tooth gears. I was pleasantly surprised when I switched to a 53x11 Schwinn that used Shimano cogs--despite being smaller and more likely to wear, they last two years or more on the same daily ride. But I still don't bother to inspect them. If they skip, they're trash. Carl Fogel |
#7
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Strange problem with new chain
I knew I was forgetting something! The chicken! Yeah you and Carl were
right on I took the old one off, put it next to a much newer, but still slightly used one that I had hanging around, and the wear could easily be seen. Seems to me that having a spare hanging around is a pretty good idea. From what I have read most of the freewheels and or cassettes don't have much of a lifespan. Which doesn't really make much sense seeing as how they are steel. Makes me wonder how much longer these 5 sp freewheels will be available! Ken |
#8
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Strange problem with new chain
On 2 Jul 2005 15:44:35 -0700, "Ken M"
wrote: I knew I was forgetting something! The chicken! Yeah you and Carl were right on I took the old one off, put it next to a much newer, but still slightly used one that I had hanging around, and the wear could easily be seen. Seems to me that having a spare hanging around is a pretty good idea. From what I have read most of the freewheels and or cassettes don't have much of a lifespan. Which doesn't really make much sense seeing as how they are steel. Makes me wonder how much longer these 5 sp freewheels will be available! Ken Dear Ken, They'll probably be available for a long time, since bike shops keep buying them to fix old bikes. Here are a few mail order places that sell 5-speed freewheels: http://www.yellowjersey.org/cgi-bin/...em_ id=783350 http://www.sheldonbrown.com/harris/freewheels.html#5 http://www.biketoolsetc.com/index.cg...m_id =SU-HG5A http://www.loosescrews.com/index.cgi...d=971679431663 http://www.loosescrews.com/index.cgi...d=971679431663 Carl Fogel |
#9
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Strange problem with new chain
Well that is true, they are still pretty commonly available. And they
are still being used on some new x-mart bikes. Like this one: http://www.walmart.com/catalog/produ...4#long_de scr So you are probably right about being around for some time to come. Ken |
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