Does this chainring need replacing?
09-23-23 | 06:33 AM
#2
Senior Member
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Bikes: 2015 Workswell 066, 2017 Workswell 093, 2014 Dawes Sheila, 1983 Cannondale 500, 1984 Raleigh Olympian, 2007 Cannondale Rize 4, 2017 Fuji Sportif 1 LE
Is the chain skipping? Every chain ring will need to be replaced eventually if it is used .... (as in, "put to use, ' not "purchased from a prior user,") so yes, in time, it will need replacement. I wouldn't replace a chain ring if it was still performing well, though. If the chain skips off or slips ... get a new right, right away.
Of course, I could be wrong.
Of course, I could be wrong.
09-23-23 | 08:26 AM
#3
Mad bike riding scientist
Joined: Nov 2004
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From: Denver, CO
Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
No. The teeth aren’t supposed to be the same all the way around. Some of the teeth will look flatter than the others but that is a design feature that improves shifting. Your chainring looks fairly fresh and serviceable.
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Stuart Black
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Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
09-23-23 | 08:32 AM
#4
Thread Starter
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Joined: Jul 2023
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Is the chain skipping? Every chain ring will need to be replaced eventually if it is used .... (as in, "put to use, ' not "purchased from a prior user,") so yes, in time, it will need replacement. I wouldn't replace a chain ring if it was still performing well, though. If the chain skips off or slips ... get a new right, right away.
Of course, I could be wrong.
Of course, I could be wrong.
09-23-23 | 08:50 AM
#5
When I worked in bike stores, customers would come in to ask about/complain about the short teeth on the big ring at least a few times per week. We'd just walk them over to the display bikes and point out that the big rings on all the brand new bikes had teeth that looked exactly the same as their ring.
09-23-23 | 09:02 AM
#6
OM boy
Joined: Jul 2005
Posts: 5,316
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From: Goleta CA
Bikes: a bunch
tooth 'shape' is hard to judge on modern chainrings, some have flatten top, others have a sharkfin shape which appears 'worn' but isn't.
way we had checked BITD, with chainline tight on chainring and all the way through jockeywheels and middle cog - pull/lift chainlink off of chainring at the point where a horizontal line bisects the Bottom bracket. This is the point where the chainwrap on the ring is the tightest.
If the chain lifts so much that the chainring teeth are greatly/more than fully exposed - ring may be worn... Total Judgement call !!! I'm not acquainted with any 'hard measure'.
This one looks ok.
IMPORTANT Conidtions
Chain must be in almost new or new condition. Worn chains first thing to check (best with a Park Tools chain checker (there are many poor/cheap substitutes which aren't accurate).
The CC3 and similar from Park Tools are great.
Used Bike? Always check the chain before using...
My visual assessment (which may be wrong) is the chainring looks good.
Ride On
Yuri
way we had checked BITD, with chainline tight on chainring and all the way through jockeywheels and middle cog - pull/lift chainlink off of chainring at the point where a horizontal line bisects the Bottom bracket. This is the point where the chainwrap on the ring is the tightest.
If the chain lifts so much that the chainring teeth are greatly/more than fully exposed - ring may be worn... Total Judgement call !!! I'm not acquainted with any 'hard measure'.
This one looks ok.
IMPORTANT Conidtions
Chain must be in almost new or new condition. Worn chains first thing to check (best with a Park Tools chain checker (there are many poor/cheap substitutes which aren't accurate).
The CC3 and similar from Park Tools are great.
Used Bike? Always check the chain before using...
My visual assessment (which may be wrong) is the chainring looks good.
Ride On
Yuri
09-24-23 | 04:22 AM
#11
Since you weren't referencing a set of Sora cranks/rings, the point you were attempting to make with your "side eye" remark is unclear.
