lulubel
Über Member
- Location
- Malaga, Spain
Following on from my last posts on this subject, I'm still getting noises from my new rear cassette, and I'm pretty much at a loss now.
The indexing is spot on now. Gear changes are smooth and crisp, the chain isn't rubbing on the front cage in any of the acceptable gear combinations.
I'm still getting a buzzing noise from the cassette in practically every gear, and rattling (similar to the sound the chain would make if rubbing on the front cage, but it isn't that) using the biggest 2 sprockets and either the small or middle chain ring. It's worse on the biggest sprocket, and that's where it started first, but has spread to the second one as well.
It's been suggested to me that the cassette may not have been tightened properly, and that's what I was moving towards. I read up on this a bit, and "wiggled" the cassette to see if there was any lateral movement. There was a tiny bit, but no more than on any of the other 4 bikes in the garage, none of which are making similar noises.
The rear wheel is also secure - seems obvious, but I checked it anyway - so not causing any lateral movement.
In addition to this, on my ride today, it started making a new noise. When I pedal under load - and I'm a small, not particularly fit woman, so my idea of "load" is probably not the same as many people's - I'm getting a scuffing/scraping noise when pressing downwards on the right pedal. It sounds like brake pads rubbing on dusty rims, but I've checked, and I'm confident it isn't that - and I don't think I'm strong enough to create enough flex to cause that, anyway! My concern is the bottom bracket may not have been greased properly. Is that a likely cause of that kind of noise?
I don't have any of the tools to check the cassette tightness or take the BB apart. Does Decathlon stock those kind of tools? We have one about 45 minutes drive away that I could try if there's a good chance they might stock what I need. (I could also order tools from Wiggle, but it will be the end of next week before they arrive here, and I'm not sure if I should be riding the bike as it is.)
I'm reluctant to take it back to the same LBS that did such a poor job in the first place because, based on prior experience, they're not likely to improve on their past performance. I'm trying to find another LBS to try, but haven't had any luck yet.
Help!
Edit: Should have said, it had a new chain and cassette, new cables, and a service (presumably a service would include taking everything apart and regreasing) 10 days ago.
The indexing is spot on now. Gear changes are smooth and crisp, the chain isn't rubbing on the front cage in any of the acceptable gear combinations.
I'm still getting a buzzing noise from the cassette in practically every gear, and rattling (similar to the sound the chain would make if rubbing on the front cage, but it isn't that) using the biggest 2 sprockets and either the small or middle chain ring. It's worse on the biggest sprocket, and that's where it started first, but has spread to the second one as well.
It's been suggested to me that the cassette may not have been tightened properly, and that's what I was moving towards. I read up on this a bit, and "wiggled" the cassette to see if there was any lateral movement. There was a tiny bit, but no more than on any of the other 4 bikes in the garage, none of which are making similar noises.
The rear wheel is also secure - seems obvious, but I checked it anyway - so not causing any lateral movement.
In addition to this, on my ride today, it started making a new noise. When I pedal under load - and I'm a small, not particularly fit woman, so my idea of "load" is probably not the same as many people's - I'm getting a scuffing/scraping noise when pressing downwards on the right pedal. It sounds like brake pads rubbing on dusty rims, but I've checked, and I'm confident it isn't that - and I don't think I'm strong enough to create enough flex to cause that, anyway! My concern is the bottom bracket may not have been greased properly. Is that a likely cause of that kind of noise?
I don't have any of the tools to check the cassette tightness or take the BB apart. Does Decathlon stock those kind of tools? We have one about 45 minutes drive away that I could try if there's a good chance they might stock what I need. (I could also order tools from Wiggle, but it will be the end of next week before they arrive here, and I'm not sure if I should be riding the bike as it is.)
I'm reluctant to take it back to the same LBS that did such a poor job in the first place because, based on prior experience, they're not likely to improve on their past performance. I'm trying to find another LBS to try, but haven't had any luck yet.
Help!
Edit: Should have said, it had a new chain and cassette, new cables, and a service (presumably a service would include taking everything apart and regreasing) 10 days ago.
