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Brake judder and vibration

  #1  
Old 09-12-2016, 05:07 PM
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Default Brake judder and vibration

Hello guys
After replace the front brake pads (original pads) of my F4i, I get a strong vibration and judder when the brake system get hot.
I already replace head set but the problem remains.
The issue only happens if after a strong or long brake...

Thanks for your help
 
  #2  
Old 09-12-2016, 09:42 PM
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did you bed the pads in properly?

did you use proper double sintered pads, or...

are the rotors past wear limits?

its really hard to warp these rotors, but a dial gauge would help to determine that...
 
  #3  
Old 09-13-2016, 07:23 AM
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I only get the issue after 500 km with the new pads
I have the original pads from Honda
I already try with another complete wheel (inclunding rotors) but the problem remains

Thanks for your help
 
  #4  
Old 09-13-2016, 03:27 PM
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Are you feeling this In the brake lever or is the steering head jumping. If 1 then when was the last time you've flushed the brake fluid. If 2, check the steering head bearing.
 
  #5  
Old 09-13-2016, 06:03 PM
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No I don't feel it in the brake lever.
I replaced the steering head and the fork oil a week ago.
I replaced the brake fluid 2 month ago but is already very dark.

Thanks for your help
 
  #6  
Old 09-13-2016, 10:35 PM
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I've heard of brake lines expanding but you shouldn't get vibration. I used to bleed my F4i brakes often. I switched to EBC HH sintered pads and I used Valvoline fluid and steel braided lines. Be sure you're getting all the air out of the system.

Come to think of it, I have a complete F4i brake system setup for sale with Speedbleeders installed. I was happy with the functionality but went with the 954 system for looks and functionality. See the classified section.

Sorry I couldn't help diagnose. This is strange that it's only when hot. But water in fluid boils and rubber lines do expand but your description sounds extreme like warped rotors.
 
  #7  
Old 09-14-2016, 04:31 AM
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I have steel braided lines
 
  #8  
Old 09-14-2016, 04:55 AM
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Have you checked for any loose components? Can you take a video?
 
  #9  
Old 09-14-2016, 06:02 AM
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All the components have the correct torque.
Video?
 

Last edited by jaymeferreyra; 09-14-2016 at 06:56 AM.
  #10  
Old 09-19-2016, 07:26 PM
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Last weekend I removed the cover of brake fluid, and I see some condensation in the rubber part inside (the rubber part under the cover).
Is this normal or can this make the judder symptoms?

Thanks
 

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