You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
For a while now my front 203 Shimano rotor has sounded like a bunch of turkeys on the trail. However i then generally completely forget to swap it.... Swapped this morning to a SRAM 203 centerline and it's lovely again.
But... can i do anything about the Shimano one ?
It doesn't appear to be an out-of-true issue...
But… can i do anything about the Shimano one
Turn it into a clock for the workshop. Keep using the SRAM.
Did it stop ok?
My experience is that with noise comes lack of performance and contamination of pads and disc.
If the new one doesn't start fading and then screeching soon, maybe it is just that the Shimano one is worn out.
Or could be the Shimano leaky calliper problem if it goes after been stood a while.
I've had this twice and the brakes performed OK*, just squealed like a git.
*Ok until I changed the lot and was given a significant increase in stopping power, so I guess the leaky was not really ok
Did it stop ok?
My experience is that with noise comes lack of performance and contamination of pads and disc.
If the new one doesn’t start fading and then screeching soon, maybe it is just that the Shimano one is worn out.Or could be the Shimano leaky calliper problem if it goes after been stood a while.
I’ve had this twice and the brakes performed OK*, just squealed like a git.*Ok until I changed the lot and was given a significant increase in stopping power, so I guess the leaky was not really o
YEah pretty much fine.
Brakes are now Codes, but it was doing it on the Shimano brakes previously i think.
I'll chuck it in the bin....
Might be worth checking which mounts you have
My Saints are 203mm Shimano rotor with the correct mount
My Codes are 200mm SRAM rotor with the correct mount
If I run the wheel with the Shimano rotor and wheel in the bike with the Codes on it sounds very much like how you describe it. I can make it work with a couple of thin washers
I got this sensation/noise thing on my gravel bike. I changed the rear pads whilst touring in Italy from he original GRX to Uber race matrix. Would stop the bike, but sounded and felt awful. I’m guessing a small leak when pushing the pads back? Seems better since heating the pads up and cleaning the rotor since I’ve got home but haven’t ridden it properly to test it.
Often caused by pad contamination I have found, or from brake mounts not being perfectly aligned. Sometimes you do just get a noisy combo though, and it takes changing a component to make the problem go away, even if on the surface every component in your brake system is perfectly serviceable…
Don’t bin the rotor though, try it on another bike maybe…?
Yeah was silent today when out with new rotor on.
The old will be emergency spares for now
Turn it into a clock for the workshop. Keep using the SRAM.
To be fair, this is a SRAM rotor
Tidy!
Please note: clock still on GMT
I've no experience of better quality ones, but think the cheaper Shimano ones overheat & soften/score very easily.
I had the problem you describe & sanding the disc was the only thing to cure it. I'm not sure that's ideal when they are so thin to start with.
Suspect it’s due to the 203/200mm difference as said above. Without spacing the caliper further out, the pads will likely contact the rotor “spokes”, so the effective braking surface varies giving you the noise, and presumably slightly pulsing brakes.
It’s a sheet of metal. Should be ok if you sandpaper it well.