EISTO
Well-Known Member
I've clocked around a 1000 km on my second-hand GenII this summer and quickly noted a faint low-pitch wooshing/grinding noise that seems to disappear when I pull the clutch handle. The low pitch -and the fact that it seems to follow speed rather than engine rpm- got me thinking of chain and/or sprocket wear. Some facts:
-The chain seems well maintained and has no tight spots
-The rear sprocket has no wear visible to the naked eye
-Chain adjustment seems correct
-The noise is difficult to describe. The water pump of my washing machine makes a noise of similar nature and pitch when it runs dry, i.e. has finished pumping out the water. Slightly grinding. Roughly 1-2 beats per second at 40 km/h. Gets on your nerves like nothing else.
-I forgot to ask the previous owner if he ever replaced the chain and sprockets. The bike has clocked about 18000 km in total.
At 40 km/h the chain does a full round about twice per second, so this got me thinking that the chain could be the culprit. However, all online discussions regarding chain/sprocket wear tend to focus on measuring chain length, sprocket teeth etc rather than noise. Still, for a 530 chain I guess the margins are so small that even the slightest wear would cause noise...?
Has anyone else experienced this type of noise in relation to worn chains and sprockets?
Einar
-The chain seems well maintained and has no tight spots
-The rear sprocket has no wear visible to the naked eye
-Chain adjustment seems correct
-The noise is difficult to describe. The water pump of my washing machine makes a noise of similar nature and pitch when it runs dry, i.e. has finished pumping out the water. Slightly grinding. Roughly 1-2 beats per second at 40 km/h. Gets on your nerves like nothing else.
-I forgot to ask the previous owner if he ever replaced the chain and sprockets. The bike has clocked about 18000 km in total.
At 40 km/h the chain does a full round about twice per second, so this got me thinking that the chain could be the culprit. However, all online discussions regarding chain/sprocket wear tend to focus on measuring chain length, sprocket teeth etc rather than noise. Still, for a 530 chain I guess the margins are so small that even the slightest wear would cause noise...?
Has anyone else experienced this type of noise in relation to worn chains and sprockets?
Einar
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