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glang · 12-02-18, 09:34 AM

I think everything wears together so if you put a new sprocket on the teeth spacing will be slightly closer than the original so the old chain will only really be in contact with one tooth at a time. Then instead of the load being shared by all the teeth it will be concentrated on each one individually so wearing them rapidly until they reach the same spacing as the chain (and old sprocket) when the load will once again be shared and the wear rate slows. Unfortunately I think that during this process the chain is also temporarily more stressed so increasing its wear rate until it all settles down again.

12-02-18, 09:34 AM	#11
glang Member Join Date: Oct 2007 Posts: 537	Re: Is this sprocket too worn? I think everything wears together so if you put a new sprocket on the teeth spacing will be slightly closer than the original so the old chain will only really be in contact with one tooth at a time. Then instead of the load being shared by all the teeth it will be concentrated on each one individually so wearing them rapidly until they reach the same spacing as the chain (and old sprocket) when the load will once again be shared and the wear rate slows. Unfortunately I think that during this process the chain is also temporarily more stressed so increasing its wear rate until it all settles down again.