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Opinon needed on chainring wear?

Old 08-21-20, 12:39 PM
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sdmc530
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Opinon needed on chainring wear?

So I rode to my lbs to have some coffee and bs a bit. The mech said to me I should really think about replacing my chainrings. I was thinking about doing it this winter because my power meter has been acting up just a bit but he was telling me I shouldn't wait.

So opinions..should I wait, so I do it now or should I go longer yet and replacing it prematurely all together? Shifting has been ok as far as I can tell but I don't use the small ring very often.. If it wasn't for the power meter starting to act up I probably wouldn't even have noticed it at all.

A few pics:
I hope they are clear enough, I tired to put a white background on them so they can be seen better.





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Old 08-21-20, 05:44 PM
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If you're not having issues with shifting or chain skipping, I can't see much reason to replace them. Are you wearing out chains & cassettes faster than before? That's the only other reason I can see as to why you would want to replace the chain rings. Whenever you decide to replace the chain rings, I would make sure to also change the chain & cassette at the same time, and consider the jockey wheels, too.
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Old 08-21-20, 06:21 PM
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Originally Posted by BoraxKid View Post
If you're not having issues with shifting or chain skipping, I can't see much reason to replace them. Are you wearing out chains & cassettes faster than before? That's the only other reason I can see as to why you would want to replace the chain rings. Whenever you decide to replace the chain rings, I would make sure to also change the chain & cassette at the same time, and consider the jockey wheels, too.
appreciate the response. Nope, no early chain wear and shifting is doing ok as far as I can tel. When I do replace yes, I swap it all out front and rear.

I am really hoping the power meter holds on longer so I don't need to drop that cash. I really like having a power meter.
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Old 08-21-20, 07:23 PM
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That wouldn't blip my radar. Warn chainrings look real pointy on the tops of the teeth. Those are still nice and round.
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Old 08-21-20, 07:40 PM
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Meh, I wouldn’t bother replacing chain rings because of his recommendation. Worn teeth tend to look like shark fins - kinda pointy on top with a slight curve in the tooth.

Definitely replace the chain and cassette as previous posters mentioned as the drivetrain components wear in unison. If you’ve ever installed a new chain on an old cassette, you know what mean.
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Old 08-21-20, 08:42 PM
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Originally Posted by BHG6 View Post
If you’ve ever installed a new chain on an old cassette, you know what mean.
sure do!


Thanks for all the replies! It is a bike shop trying to get me to spend money so I should know better
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Old 08-21-20, 09:00 PM
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Some Chainring and cassette teeth often look more worn than others, but are intentionally cut differently to aid in shifting. The smaller teeth help the chain grab during a shift.
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Old 08-22-20, 06:33 AM
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Don't know it is so much trying to sell parts as just a different level of perceived maintenance.
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