Daylight between chain and chainring
alomac
Posts: 189
I've noticed that I there is a visible gap between the chain and some of the 'valleys' of my chainring as in this Sheldon Brown illustration of a new chain on a worn sprocket:
The chain is new (c. 300mi, less than 0.75% on my chain checker), but I don't think the chainring has seen enough use to be worn. I'd say it's done around 3100mi, in which time I've gone through one chain and cassette.
The crankset is a low-end Shimano Tourney (FC-M151) unit. There isn't any effect on the way the bike rides, so I'm guessing there probably isn't a problem.
The chain is new (c. 300mi, less than 0.75% on my chain checker), but I don't think the chainring has seen enough use to be worn. I'd say it's done around 3100mi, in which time I've gone through one chain and cassette.
The crankset is a low-end Shimano Tourney (FC-M151) unit. There isn't any effect on the way the bike rides, so I'm guessing there probably isn't a problem.
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Comments
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If the chainring has done 3100 mi then i would imagine it is junk like the chain you've just replaced. With that amount of millage i would have done both at the same time.0
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The Tourney crankset used riveted or spot-welded chainrings so replacing a ring means replacing the whole crankset. I assumed that the steel rings would last through several cassettes. I dunno, everything still _seems_ fine...0
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if it works leave it. the rings need to be very worn to cause many issues."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0
