I recently had a new front brake rotor installed, as I was getting a high frequency pulse when I applied the brakes at high speed, a sign of a warped rotor. The new rotor has solved the high frequency pulse problem, but now when I slow down gently as I approach an intersection, holding a light but steady pressure on the front brake, it feels as if the rotor is really warped, with the wheel turning most of a rotation at one speed, but the rest of the rotation feels as if I've momentarily squeezed the brake lever harder, and then returned to the original pressure. This on-again, off-again braking continues until I come to a complete stop.
My local bike shop test rode the bike, and confirmed what I was experiencing. Upon inspection the new rotor doesn't look warped. The mechanic said it might be a "pedal" rotor that is designed to create this effect because it also increases braking power by giving the brake pads more to grab on to. I've Googled "pedal rotors" with no success. Has anyone else experienced this? It's not unsafe (I don't think), but it prevents me from bringing the bike to a slow stop in a steady manner.
My local bike shop test rode the bike, and confirmed what I was experiencing. Upon inspection the new rotor doesn't look warped. The mechanic said it might be a "pedal" rotor that is designed to create this effect because it also increases braking power by giving the brake pads more to grab on to. I've Googled "pedal rotors" with no success. Has anyone else experienced this? It's not unsafe (I don't think), but it prevents me from bringing the bike to a slow stop in a steady manner.