So recently ive noticed that when i apply a lot of force while riding on the small chainring the chain keeps skipping. The chainring seems very worn down, so my question is would replacing the chainring resolve that problem? The big chainring is not as worm down and I dont have that issue there. However, while making these pictures I have noticed that the chain does not properly sit on the big chainring. Would would be the cause of that? Do I need to replace the chain aswell?
by seargantgsaw
24 Comments
Maybe your chain is old and streched.
Go to a bike shop and just ask them to measure the chain (takes 1 minute and they should do it for free)
it’s cheap to replace.
The small ring isn’t too bad, but the big one is completely f***ed.
These teeth could be put in a shark’s mouth with how sharp they are…
You need to replace the chainrings
Replacing the chain and cassette would probably be a good idea too…
Chainrings, chain and cassette need to be replaced at the same time.
Replace them both. The chain may be cooked too.
You need to replace the chain, chainrings, and cassette. You waited too long to replace the chain, which stretched, and now it’s all worn. Replacing the chain, or chainrings on their own will no longer solve your issue.
It could be that your chain is incompatible with your chainrings. For example a 7 speed chain won’t work properly with a 12 speed chainring.
It could also be that your chain is worn and needs to be replaced.
…how long ago did you last change the chain? I would guess, very, very long ago.
Odds are everything is shot. Chain, cassette, chainrings. Everything needs to be replaced.
is that a new chain? (Doesn’t look like one) If not, Change the chain, if the issue persists or if that is a new chain, you need to change the chainrings as well. Oh, and I recommend cleaning the chain more often, that thing is filthy.
As others have said, replace the chain, chainring, and likely your cassette.
Also, if you want a friendly tip on how to avoid this in the future, clean your bike and chains. Leaving muck and grime caked on your bike causes really abrasive wear and tear and will cause your components to wear out quickly. It’s the equivalent of not doing an oil change on your car.
Clean and properly lubed drivetrains will last a long long time. Dirty ones wear out like this one did.
Chains stretch and wear out over time and once the chain wears out, it starts taking the rest of the drivetrain with it.
PSA- Unless you want to dump money on parts, clean and lube your chain and sprockets at least once a week. White Lightning Epic Ride lube is cheap and available at Walmart.
Wow. Where even to begin here. As has already been said, then your drivetrain is totally toast. I have worked in a bikeshop and never recall seeing something so worn before.
Given your chainring is this worn, your chain must be super worn too, and hence this will have affected you cassette too, and therefore ALL needs replacing at the same time to not destroy other parts. It will be pricy but there is no way around it.
Additionally, your drivetrain is filthy. If you want to get more life out of your drivetrain in the future then keep it clean and lubed (ideally waxed) investing time and money in this will cost you less long term as drivetrains are not cheap to replace.
Just like how you would change your oil in your car regularly to not change the engine.
That dirt looks as old as the drivetrain. When you replace everything it would be a good idea to clean it to extend the life of the new drivetrain.
Really is this even a question, yes it is worn out just like your chain and probably your cassette too.
you let this go too far. The chain wore out and you kept using it and now it’s all worn. Replace chain, cassette and big chainring for sure. I would replace small chainring too if it were me, but it doesn’t “look” that bad.
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On top of the things already said, the fact that you consumed a lot the big chainring and not much the small one means that you always use the big one and that the small one is rarely used.
Since you are replacing the chainrings I would consider getting 2 bigger ones that are more suitable for your style of cycling.
Or you could consider getting only one bigger one (that’s what I did) and get rid of the front derailleur and front shifter and its cable.
There is no point in carrying weight on your bike if you.dont need it.
Invest in a chain wear indicator and you’ll save on drivetrain replacements.
Replace everything and keep it clean!
These are classic drivetrain wear symptoms.
The chain doesn’t sit right because it is too worn out. Chains wear out at the pins and bushings – more play there means that average space between links gets longer. This causes the chain not to fit the gears well, so more force gets focused on individual teeth, causing them to wear out faster too.
I think the old owner never used the small chain ring. So the chain and big one got worn together. You can still keep using the bike just don’t use the small chain ring.
You need to buy all three together. They wear to match each other. I usually buy a second chain and rotate them regularly. This will maximize your investment as the chain is the item that will fail. I have had friends that use three chains, but two has been enough for me. If I buy a new bike I will buy a chain at 300 miles and rotate it in. I like to wax my chains so this works good for me and will keep your drive train running for a long time.
The big ring and chain are worn out.
As it wears the chain slightly increases in length and if the chain is not changed it causes the teeth to wear out into a ‘shark fin’ shape
The small ring is not worn but the chain can’t engage the teeth properly because the chain is too long.
It’s fine on the big ring because the chain has worn away the teeth to fit.
The entire drivetrain needs to be replaced. Chain, rear cassette, front chainring, and probably derailleur jockey wheels.
Buy a chain wear indicator and when you come to replace the chain I suggest replacing the rear cassette as well.