Floating Rotors

Discussion in 'Technical & Maintenance' started by Wayne, Aug 17, 2019.

  1. Wayne

    Wayne Well-Known Member

    What’s the deal with floating rotors? I have these on my Varadero with almost 70,000klms and no issues at all.

    On my KTM I’ve been having grabby issues on the front.

    Many have mistakenly claimed warped rotors, but I don’t believe this is the case.

    I hate the thoughts of having to deal with Fun n Fast for warranty. But I think I might.
    Last edited: Aug 17, 2019
  2. HunterSon

    HunterSon Active Member

    The only issue I had was getting the bushings the rotors float on clogged with dirt. Caused a really bad pulsing in the front brakes under hard braking until I freed them up again.
  3. Dougger

    Dougger Member

    I agree with HunterSon. I had them on my Versys and thought the rotors were warped. The "buttons" used to get clogged up. I got into the habit of cleaning them with a bit of brake cleaner and then putting a little fine oil on them. I would then wipe off the rotors with brake cleaner in case I got some oil on them. I had even bought replacement rotors. They went with the bike when I sold it. Not sure if they were installed after that or not.
  4. Wayne

    Wayne Well-Known Member

    Interesting about the bobbins. However the video below explains what the bobbins actually do. The internet is full of videos about ‘cleaning’ these and making sure they ‘spin’. Internet myth?
    Mine on my varadero are tight, with 70,000klms and no issues. That’s because they are not suppose to be loose and spin.

  5. RossKean

    RossKean Active Member

    Agreed. Mine are tight and never an issue. Internet "wisdom" has all sorts of articles on cleaning and loosening them up.
    I certainly won't attempt anything unless there is a problem.
    Wayne likes this.
  6. HunterSon

    HunterSon Active Member

    I never said anything about spinning freely. They obviously have to have some tension. The rotor is supposed to be able to float to some degree (some movement) to keep it centred in the calliper. If some of the bobbins are blocked with dirt and offer less float than the rest then you will feel a pulsing in the brakes. Mine was pretty bad. I cleaned them all and the problem went away. Worked for me.
  7. Wayne

    Wayne Well-Known Member

    I never said that you said 'spinning'. From what I see in that video, they have nothing to do with 'centering' either. They are simply a way to stitch the rotor to the hub and allow them to expand outward as opposed to keeping them fixed which would make it easier for the heat to warp them.
  8. HunterSon

    HunterSon Active Member

    Sorry, I read your response as spinning. My bad. It did seem like centering was an issue with mine as cleaning took all the pulsing effect out of my front brake.

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