Just installed Ultegra R8010 brakes, juddering only at slow speed
09-25-18, 06:33 PM
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Just installed Ultegra R8010 brakes, juddering only at slow speed
Hi! I just installed Ultegra R8010 brakes front and rear from Tektro direct mount brakes. I never had a pulse or a judder with the Tektros, but now on my front R8010 brake it judders, but only at slow speed. I torqued all the bolts down with a torque wrench to Shimano's specifications and toed in the pads as recommended. Any idea what could be causing the judder?
09-25-18, 08:32 PM
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Assuming all caliper pivots are not sloppy loose then I'd look at the rim/pad interface. Try the old pads as an experiment. Andy
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AndrewRStewart
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09-28-18, 10:33 AM
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At least on cheaper bicycles, I have come across rotors with a variation of thickness due to manufacturing defect. Pulsation of this type generally is much less noticeable at higher speeds.
Firstly I would spray a little water on the rotor and ride/drag the brake until dry, in case some surface condition exists on the rotor faces.
Some break-in period may help, but ditch or return the rotor if it's bad for more than a couple of dozen stops after wetting it down once.
Firstly I would spray a little water on the rotor and ride/drag the brake until dry, in case some surface condition exists on the rotor faces.
Some break-in period may help, but ditch or return the rotor if it's bad for more than a couple of dozen stops after wetting it down once.
09-28-18, 11:07 AM
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At least on cheaper bicycles, I have come across rotors with a variation of thickness due to manufacturing defect. Pulsation of this type generally is much less noticeable at higher speeds.
Firstly I would spray a little water on the rotor and ride/drag the brake until dry, in case some surface condition exists on the rotor faces.
Some break-in period may help, but ditch or return the rotor if it's bad for more than a couple of dozen stops after wetting it down once.
Firstly I would spray a little water on the rotor and ride/drag the brake until dry, in case some surface condition exists on the rotor faces.
Some break-in period may help, but ditch or return the rotor if it's bad for more than a couple of dozen stops after wetting it down once.
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mtnbikerva1
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09-22-19 02:27 PM
