lulubel
Über Member
- Location
- Malaga, Spain
I'm getting really fed up with the buzzing/rattling that comes from the Surly's cassette. I've tried everything I can to eliminate it, including:
It's OK on the small chain ring using sprockets 1-5, although there's a slight rattle on sprocket 2 that I'd rather wasn't there.
It's OK on the middle chain ring using sprockets 7-9. As you move towards sprocket 1, it starts to get progressively noisier, moving from buzzy on sprockets 5-6 to rattly as you get to sprocket 4 and below.
It's noisy on any sprocket on the big chain ring, although it's noisiest on sprocket 5 and gradually gets quieter as you move towards sprocket 9. (I only use sprockets 5-9 on the big ring.)
Indexing, such as it is, is a delicate art. If I have the cable a fraction of a turn too loose, it sticks when changing from sprocket 7 to 6, or sprocket 6 to 5. If I have it a fraction of a turn too tight, there is a regular "ping" on sprocket 2 as the chain starts to catch on sprocket 1, but doesn't quite move onto it.
Cassette and chain are both the same age, the chain isn't showing any sign of stretching, and I've had this problem since they were both new.
I took a photo of the rear mech this morning because the only thing I'm left with is a bent rear mech hangar, although the bike has never been crashed, dropped, knocked or laid down on that side. (I'm very careful with the rear mech.) I'm aware that Surly's manufacturing process lacks some accuracy, however - I had to file the left rear dropout because it was too tight for the wheel hub to fit - so it's entirely possible the hangar was bent from new.
It doesn't look obviously bent to me, but something looks seriously not right in this photo.
Any thoughts?
- Make sure the cassette is tight
- Make sure the cassette and chain are compatible
- Make sure the cassette and derailleur are compatible
- Make sure the chain is the correct length
- Make sure the cables are clean, lubricated, not to short (Jagwire cables)
- Make sure the derailleur (limit and b screws) is adjusted correctly
- Index the damn gears - over and over again, with the same result
It's OK on the small chain ring using sprockets 1-5, although there's a slight rattle on sprocket 2 that I'd rather wasn't there.
It's OK on the middle chain ring using sprockets 7-9. As you move towards sprocket 1, it starts to get progressively noisier, moving from buzzy on sprockets 5-6 to rattly as you get to sprocket 4 and below.
It's noisy on any sprocket on the big chain ring, although it's noisiest on sprocket 5 and gradually gets quieter as you move towards sprocket 9. (I only use sprockets 5-9 on the big ring.)
Indexing, such as it is, is a delicate art. If I have the cable a fraction of a turn too loose, it sticks when changing from sprocket 7 to 6, or sprocket 6 to 5. If I have it a fraction of a turn too tight, there is a regular "ping" on sprocket 2 as the chain starts to catch on sprocket 1, but doesn't quite move onto it.
Cassette and chain are both the same age, the chain isn't showing any sign of stretching, and I've had this problem since they were both new.
I took a photo of the rear mech this morning because the only thing I'm left with is a bent rear mech hangar, although the bike has never been crashed, dropped, knocked or laid down on that side. (I'm very careful with the rear mech.) I'm aware that Surly's manufacturing process lacks some accuracy, however - I had to file the left rear dropout because it was too tight for the wheel hub to fit - so it's entirely possible the hangar was bent from new.
It doesn't look obviously bent to me, but something looks seriously not right in this photo.
Any thoughts?