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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: TX brick on November 18, 2018, 11:43:56 AM

Title: Rotor pulse
Post by: TX brick on November 18, 2018, 11:43:56 AM

After using nothing but oem BMW pads I decided to try EBC organic pads on the rear 5000 miles ago. All was well until a month ago when I noticed the rear brake pulsing. There is no runout on the rotor and I am wondering if the pads have transfered material to the rotor causing the pulsing?

Title: Re: Rotor pulse
Post by: Martin on November 18, 2018, 12:48:51 PM

How did you determine that there was no runout? Try cleaning the rotor and pads with a brake cleaning spray. Allow it to dry thoroughly and test. If it is still pulsing sometimes a light sanding followed by a cleaning will resolve the problem.
Regards Martin.

Title: Re: Rotor pulse
Post by: TX brick on November 18, 2018, 03:30:03 PM

I used an improvised runout gage.  Allowable is  .0079 in and there is nowhere near that.
I saw on another site that they used a flex hone in a drill to clean and deglaze motorcycle rotors. I tried cleaning and sandpaper with no result.

Title: Re: Rotor pulse
Post by: TX brick on November 24, 2018, 12:08:50 PM

I deglazed the rotor with a rotary hone and the brake is smoother.

Title: Re: Rotor pulse
Post by: Martin on November 24, 2018, 03:30:20 PM

 :2thumbup: