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Fitted new wheels and brand new discs to my bike yesterday, first ride today and the rear brake has a strange pulse to it under hard braking. Didn't seem to loose any power just felt strange.
Hope tech 3 X2....
Any ideas.
I had this with a rotor that had an area of roughness - it caught each rotation when you braked.
Warped rotor
Had it with sram rotors before. Never managed to fix it.
Warped rotor
Brand new 160mm fresh out of the hope box packet....
Or it could be the pad running over the spokes of the disc. Check caliper alignment and orientation of any adaptors if the pad is not running completely on the braking surface, and also that the design of disc (wavy/straight etc) suits the caliper.
Hope pads, rotor, disc.
The previous disc on my wheels was a Shimano so it could have worn the pads incorrectly. I'll change the pads and see what happens...
Wavey rotors do pulse as you brake.
As the wave goes through the pad you can feel it.
Usualy more noticable on the front than the rear.
I used to swap between a Hope disc and something else, it used to pulse until the pads wore in so I think that might be it.
as spooky mentions, i'd bet it was the pads slightly catching the disc 'spokes'... had that before and had to put some washers under the caliper to move it out 2mm.
So it turns out the brand new hope rotor was bent. A new one has sorted it....
Ye of little faith...