Probably a dumb question, but after a spot of fettling, my brakes squeal like a dying pig. I THOUGHT I cleaned them, but they still squeal. Does that mean that I didn't clean them properly (so I need more alcohol and elbow grease on the rotor and maybe new pads) or is there another reason they might be squealing?
Glazed. Try sanding them down with a Dremel. Worked a treat for me today.
Could need bedding in again of you've been adjusting stuff or cleaning the discs.
Sram? My Shimano organic brakes used to squeal a bit initially when wet (or just after a clean with isopropyl) but a couple of squeezes and it stopped until they got wet again 5 mins later - the rest of the time they were fine and no issues swapping between wheelsets. My Sram, as supplied on my road bike squealed all the time until I changed the pads (organic ones labelled "quieter") and rotors (swapped paceline for centreline rotors). I have 2 sets of wheels with the same rotors on; I swapped to the other set yesterday and one of them started squealing (front I think) it would go away after a couple of pulls but then return next time I applied the brakes. Tried getting them a bit hot to see if that would sort it but it didn't seem to - will have another go this week.....
Sram seem to be worse for it than Shimano IME.
Shimano
i’ll try some sanding
by the way - the little clip that goes on the end of the bolt that holds the pads on - what’s it called and where do I get a new one when (not if) I lose the one that’s on now?
Got a few on my garage floor if you can find one, I sure as hell can’t…
Snap Retainer or Snap Ring - example part no https://www.sjscycles.co.uk/brakes/shimano-xtr-brm985-pad-axle-snap-ring-y8j798060/
Snap Retainer or Snap Ring – example part no> https://www.sjscycles.co.uk/brakes/shimano-xtr-brm985-pad-axle-snap-ring-y8j798060/
Great. Thanks 🙂
I contaminated mine with some laissez-faire GT85 spraying.. cleaned discs and pads with isopropyl alcohol and then got them hot on a longish descent.
They still complain a bit in the wet until they get some heat into them..
I've just solved squealing of my Deore 4-pots by a huge clean of rotor and pads, sand of pads, then repeatedly rising in boiling water. After that I toasted in the oven for 10 mins at 150*c.
Silent and powerful still a month and 6 rides later. 🤞
where do I get a new one when (not if) I lose the one that’s on now?
I've never bothered to replace them and am yet to have a set of brake pads eject themselves from the caliper (as a result of that bolt falling out - I did once lose a set when I forgot to put the bolt back in after being interrupted while finishing a brake bleed then going for a quick test...)
I’ve never bothered to replace them and am yet to have a set of brake pads eject themselves from the caliper
That's sort of what I suspected - it's hard to imagine a safety-critical component depending on a tiny bit of loose wire.
You can always put a split pin in instead of the bolt anyway if you lose the Snap Ring. Does the same job.
the little clip that goes on the end of the bolt that holds the pads on – what’s it called
In this household it's a ping****it
(along with various other split rings and springs and stuff)