Looks like your drivetrain is very worn. Try replacing the chain. And if that doesn’t work it’s probably time to change the cassette too.
Drpantsgoblin on
That cassette is definitely worn out. You can see the gaps under the chain links where it doesn’t sit level like it should.
Replace the chain & cassette at the same time, or the single old item will just wear the single new item at a rapid pace and the skipping likely won’t be solved anyway.
ojiTN on
while you’re at it, check the alignment of your derailleur hanger and derailleur cage to make sure they’re not bent out of alignment.
Limit screws – fairly easy to do just awkward if you dont have a bike stand plenty of vods for it on yt.
Prestigious_Carpet29 on
Measure the chain stretch with a steel ruler – it’s almost certainly badly stretched. 24 links should measure 12 inches (rivet to rivet) when new. If they measure more than 1/10th inch over a foot, the chain is expired. If you’re much more than 1/8th inch over, your cassette is toast too
You’ll need a new chain and new cassette.
If you’re lucky you’ll get away without also needing a new front chainring.
8 Comments
Looks like your drivetrain is very worn. Try replacing the chain. And if that doesn’t work it’s probably time to change the cassette too.
That cassette is definitely worn out. You can see the gaps under the chain links where it doesn’t sit level like it should.
Replace the chain & cassette at the same time, or the single old item will just wear the single new item at a rapid pace and the skipping likely won’t be solved anyway.
while you’re at it, check the alignment of your derailleur hanger and derailleur cage to make sure they’re not bent out of alignment.
This is a great video
https://youtu.be/UkZxPIZ1ngY?si=5XnHlF-1yGDEkzaW
Replace the drivetrain, and it’ll ride like new.
Check the b screw
Limit screws – fairly easy to do just awkward if you dont have a bike stand plenty of vods for it on yt.
Measure the chain stretch with a steel ruler – it’s almost certainly badly stretched. 24 links should measure 12 inches (rivet to rivet) when new. If they measure more than 1/10th inch over a foot, the chain is expired. If you’re much more than 1/8th inch over, your cassette is toast too
You’ll need a new chain and new cassette.
If you’re lucky you’ll get away without also needing a new front chainring.