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glang · 12-02-18, 05:41 PM

youre right its just that, as I say, Ive found the new sprocket has slightly different pitch compared to the partially worn chain so the load instead of being spread is taken on individual teeth. This drastically accelerates the wear on the new front sprocket (and maybe the chain) until its pitch matches the chain and then the wear rate returns to normal. Effectively you have gained very little and may even have reduced the life of the chain....

12-02-18, 05:41 PM	#17
glang Member Join Date: Oct 2007 Posts: 537	Re: Is this sprocket too worn? youre right its just that, as I say, Ive found the new sprocket has slightly different pitch compared to the partially worn chain so the load instead of being spread is taken on individual teeth. This drastically accelerates the wear on the new front sprocket (and maybe the chain) until its pitch matches the chain and then the wear rate returns to normal. Effectively you have gained very little and may even have reduced the life of the chain....