Get a chain checker, and check chain wear. Replace if needed.
If it still skips, where does it skips? Chainrings or cassette? You could replace just what skips, but usually, the other part isn’t far from done too… Replace both if needed.
RepresentativeKeebs on
Nobody can tell from your photos.
Filthy_Filio on
How many kilometers has the drivetrain seen? I’ve had bikes where the hub was loose and this was the cause.
Otherwise I would recommend changing the chain and cassette.
Xxmeow123 on
Seeing the place where the crank set has rubbed against the frame indicates a bad bottom bracket or a bent crankset on the ring side. See if the crank arms wobble if pushed side to side to see if the bottom bracket is bad. And watch the gear to see if it wobbles when spun with or without the chain on.
lingueenee on
If you have “tons of chain slip” due to wear, and the chain has only been used on the concerned drivetrain, then you’re at the very least going to need new chain and cassette. Possibly chainrings too, but you can determine that afterwards.
But be sure it is wear that’s causing slip and not a deformed or maladjusted derailleur, unseated wheel or something else.
Infinite-Comedian151 on
Have you checked the chain for stretch?
RideFastGetWeird on
Drive train looks fine, I imagine it’s chain stretch. Just measure it.
Mild_Fireball on
How long have you had the chain and cassette? How long has it been slipping? Any chance the hanger is bent?
seankdla on
Those chainrings are pretty worn, to be honest, but not the worst . Get a new chain and cassette and see what it’s like then. You can also fix that broken spoke while the cassette’s off.
mstrshkbrnnn1999 on
Start by cleaning and lubing the chain. Is that isn’t enough check buy a checker and replace the chain if it’s stretched. If it’s stretched past .75 then replace the cassette as well. The chainrings are probably ok for another chain or two
Djcashet on
Your cage positioning looks very high also, wouldn’t hurt to lower it a bit
obaananana on
Chain slips in the rear. New casette.
New cassette new chain. Buy a chain checker. I got a good one from aliexpress.? If you dont want the hassle i would get the BBB one that has the rotor disc checker too.
Available_Rich167 on
Drive train is mint, just get a new chain, boshhhhhhhhh
k2theablam on
Chainring teath look like sharks fins. Id replace that if I was having slip issues.
terrymorse on
Chain slip almost always occurs at the cassette, either from a worn chain or cassette, or both.
​
1. Check the chain for wear, replace if worn.
2. If a new chain slips under load, the cassette needs replacing.
3. If a new chain catches on the front chainring, replace the chainrings.
15 Comments
Get a chain checker, and check chain wear. Replace if needed.
If it still skips, where does it skips? Chainrings or cassette? You could replace just what skips, but usually, the other part isn’t far from done too… Replace both if needed.
Nobody can tell from your photos.
How many kilometers has the drivetrain seen? I’ve had bikes where the hub was loose and this was the cause.
Otherwise I would recommend changing the chain and cassette.
Seeing the place where the crank set has rubbed against the frame indicates a bad bottom bracket or a bent crankset on the ring side. See if the crank arms wobble if pushed side to side to see if the bottom bracket is bad. And watch the gear to see if it wobbles when spun with or without the chain on.
If you have “tons of chain slip” due to wear, and the chain has only been used on the concerned drivetrain, then you’re at the very least going to need new chain and cassette. Possibly chainrings too, but you can determine that afterwards.
But be sure it is wear that’s causing slip and not a deformed or maladjusted derailleur, unseated wheel or something else.
Have you checked the chain for stretch?
Drive train looks fine, I imagine it’s chain stretch. Just measure it.
How long have you had the chain and cassette? How long has it been slipping? Any chance the hanger is bent?
Those chainrings are pretty worn, to be honest, but not the worst . Get a new chain and cassette and see what it’s like then. You can also fix that broken spoke while the cassette’s off.
Start by cleaning and lubing the chain. Is that isn’t enough check buy a checker and replace the chain if it’s stretched. If it’s stretched past .75 then replace the cassette as well. The chainrings are probably ok for another chain or two
Your cage positioning looks very high also, wouldn’t hurt to lower it a bit
Chain slips in the rear. New casette.
New cassette new chain. Buy a chain checker. I got a good one from aliexpress.? If you dont want the hassle i would get the BBB one that has the rotor disc checker too.
Drive train is mint, just get a new chain, boshhhhhhhhh
Chainring teath look like sharks fins. Id replace that if I was having slip issues.
Chain slip almost always occurs at the cassette, either from a worn chain or cassette, or both.
​
1. Check the chain for wear, replace if worn.
2. If a new chain slips under load, the cassette needs replacing.
3. If a new chain catches on the front chainring, replace the chainrings.