K
Kooner
Guest
Hello,
I just bought a 2004 GT I-Drive 2.0 bike and I believe there is
something wrong with the front rotor. This bike has mechanical disc
breaks.
The brake pads rub the rotor ever so slightly in the same spot as the
wheel rotates. I spent a few hours adjusting the whole brake assembly
but, the pad still rubs. I can see a slight wobble in the front rotor
as is spins. I took the bike back to where I bought it. The bike
mechanic agreed the rotor was slightly warped so he bent/flexed it a
little with his hands! The rotor wobbles less but, the pad still rubs.
The rear pad and rotor is perfect. I mean, there is a hair of a gap
between the rotor and pads and there is absolutely no rubbing on the
rear rotor. So, my questions are:
1. Is there a flatness or wobble specs for bike rotors?
2. Is in normal for the front pads to rub? What if the bike is
turning?
3. What is the annoying vibration sound coming from the front
rotor/pad assembly when I'm riding? Is it something to do with the
floating or sliding caliper?
4. What else can I do or try?
Any help would be appreciated.
Kooner
I just bought a 2004 GT I-Drive 2.0 bike and I believe there is
something wrong with the front rotor. This bike has mechanical disc
breaks.
The brake pads rub the rotor ever so slightly in the same spot as the
wheel rotates. I spent a few hours adjusting the whole brake assembly
but, the pad still rubs. I can see a slight wobble in the front rotor
as is spins. I took the bike back to where I bought it. The bike
mechanic agreed the rotor was slightly warped so he bent/flexed it a
little with his hands! The rotor wobbles less but, the pad still rubs.
The rear pad and rotor is perfect. I mean, there is a hair of a gap
between the rotor and pads and there is absolutely no rubbing on the
rear rotor. So, my questions are:
1. Is there a flatness or wobble specs for bike rotors?
2. Is in normal for the front pads to rub? What if the bike is
turning?
3. What is the annoying vibration sound coming from the front
rotor/pad assembly when I'm riding? Is it something to do with the
floating or sliding caliper?
4. What else can I do or try?
Any help would be appreciated.
Kooner