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Offline rick_lee

  • S1000R Member
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  • Bike: 2015 BMW S1000R
  • City / Town: Cave Creek, AZ
Re: Brake fade
« Reply #20 on: February 22, 2019, 04:28:36 PM »
*Originally Posted by Fistuk [+]
My brakes are working perfectly since the MC was replaced - so they obviously analyzed the issue correctly.

My brakes worked perfectly after my last bleed too.  Felt like a whole new bike.  The problem is that, well, the problem returned after about 500 more miles.

Offline rick_lee

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  • Bike: 2015 BMW S1000R
  • City / Town: Cave Creek, AZ
Re: Brake fade
« Reply #21 on: March 04, 2019, 03:38:32 PM »
Bled it again on Saturday.  Lever did not change at all after bleeding at the calipers, but got a little better once I did the master cylinder.  I went riding for a bit yesterday and it just wasn't the way it had been.  So I bled only the MC again, saw a few tiny bubbles and the lever got a lot stiffer.  What the hell is causing this and how to fix?  No point in replacing the MC if there is a design flaw with the stock one.  Bike isn't old enough to have worn seals.

Offline beech

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  • Bike: S1000R, K1300S
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Re: Brake fade
« Reply #22 on: March 04, 2019, 05:35:43 PM »
Vibration can foam the oil in the reservoir. The K1300S series had to add a open cell foam pad to the reservoir and a weight under the cap.

 


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