I've got some Tech X2 brakes on my bike. They've been great for a couple of months but on the last couple of rides the rear one has been making a kind of stuttering squeeling noise. Tnere's no pulsing in at out to be felt at the lever as I've experienced on other brakes before.
The rotor is straight, I've realigned the already well aligned caliper, the rotor and caliper bolts are all tight. I've cleaned the back of the pads and the pistons and applied a thin coating of copper grease, the skewer is nice and tight, the wheel is true, there's plenty life in the pads but it STILL makes a very annoying stuttering squeeling sound.
Don't know what else to try?? i wondered if it's something to do with the change f surface area on the rotor where the cut-outs are on the outside of the disc...
sand down he pads and disc and re bed in. Sounds like possible glazed pads or uneven build up of the pad material on the disc
Sounds like glazed pads.
Try riding with muddy water on the pads or take the pads and rub the braking surface with some clean fine grade sandpaper.
They tend to glaze up a bit in dry weather....