Facebook Twitter LinkedIn Pinterest Bluesky Threads I'm not sure whether I should replace my chainring as well as my chain. The chain sometimes falls of when I pedal hard, but I'm very sure that my limit screws are fitted correctly. by wrede1337 Bicycling Bike Bike Repair Biking Cycling Repair
theyellowdart89 on May 16, 2025 8:41 am It’s worn in good, It’s a Shimano fine for a couple generations
Wolfy35 on May 16, 2025 8:44 am That stopped being a chainring some time ago its now a decorative piece of scrap metal. If your chainring is that bad I would bet that your chain and cassette are toast as well.
MrRichardH on May 16, 2025 8:54 am Yes. Very. The ‘shark fin’ shape of the teeth is the giveaway. Unless you have changed them very recently, your chain and cassette will also need to be replaced.
Emyr42 on May 16, 2025 9:02 am https://preview.redd.it/lxesvwv7041f1.png?width=1096&format=png&auto=webp&s=fefa870ec3517ea6ce1fe11cc2b428ad5ea1b26b Notice how the rollers don’t align with the toothgaps? This is an ex-drivetrain, it is pining for the fiords.
8 Comments
It’s not worn. It’s obliterated.
Yep, chain + chainring + cassette as well(judging by the wear)
Sharkfinned = done for.
It’s worn in good, It’s a Shimano fine for a couple generations
That stopped being a chainring some time ago its now a decorative piece of scrap metal.
If your chainring is that bad I would bet that your chain and cassette are toast as well.
Yes. Very. The ‘shark fin’ shape of the teeth is the giveaway.
Unless you have changed them very recently, your chain and cassette will also need to be replaced.
Yes. extremely. Replace it and chain.
https://preview.redd.it/lxesvwv7041f1.png?width=1096&format=png&auto=webp&s=fefa870ec3517ea6ce1fe11cc2b428ad5ea1b26b
Notice how the rollers don’t align with the toothgaps? This is an ex-drivetrain, it is pining for the fiords.