Speed Four Brake Discs - Fully Floating Or Worn Out?

Discussion in 'Technical Help' started by Chris Milne, Oct 8, 2020.

  1. Chris Milne

    Chris Milne Well-Known Member

    Oct 1, 2020
    42
    63
    Oldham, UK
    The brake discs on my recentl purchased 2006 Speed Four have a lot of movement both side to side and forwards and backwards in the direction of rotation.
    The bike has done 29k miles and the bike stops well.
    If this is normal, they are the most 'floating' discs I've had on a bike
    Should I be concerned, particularly with the MOT due on 19th
    Cheers
    Chris
     
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  2. Rocker

    Rocker Elite Member

    May 1, 2016
    1,662
    800
    Suffolk
    Floating discs can seem to have an alarming amount of movement but that's how they work and cause problems if the seize up
     
  3. Chris Milne

    Chris Milne Well-Known Member

    Oct 1, 2020
    42
    63
    Oldham, UK
    Let's hope the MOT man understands that.. :D
     
  4. Rocker

    Rocker Elite Member

    May 1, 2016
    1,662
    800
    Suffolk
    He didn't mind these :) E49AB2AC-7DB5-43EE-9E1D-EE5E8F5CB6C8.jpeg
     
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  5. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
    7,225
    1,000
    Uk
    Do you find you go through pads quicker?
     
  6. Chris Milne

    Chris Milne Well-Known Member

    Oct 1, 2020
    42
    63
    Oldham, UK
    That's some lethal Mad Max stuff right there :skull::joy:
     
  7. Rocker

    Rocker Elite Member

    May 1, 2016
    1,662
    800
    Suffolk
    :joy: not looked lately : unamused:
     
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  8. Easy Tiger

    Easy Tiger Elite Member

    Jan 2, 2020
    1,577
    800
    Wirral England
    Hi Chris my speed four’s front disks move slightly back and forth and side to side but not much. I hadn’t noticed before you posted and I went and checked. The brakes work perfectly and It passed it’s test 2 days ago after it’s 6 months grace.
     
    • Like Like x 1
  9. Chris Milne

    Chris Milne Well-Known Member

    Oct 1, 2020
    42
    63
    Oldham, UK
    The bike passed its MOT on Friday and I had a great ride out yesterday with friends. I will have to swap out the discs as the side to side movement is enough to push the pistons back into the caliper slightly so I’m have to ‘double-pump’ the lever to get full brake power :D
     
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