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brake disc rotor bobbins griso 1100

Discussion in 'Chat & Tech Info' started by Guzzilife, Feb 8, 2013.

  1. Guzzilife

    Guzzilife Just got it firing!

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    hello guzziones,

    I have a UK griso 1100, 07 model, 13,000 miles
    last week after removing the front wheel to have a new dunlop roadsmart fitted the mechanic said the two discs would need likely need replacing to pass the yearly inspection. He said that the bobbins between the disc carrier and the actual disc were allowed to have sideways float but not back to front. They move by about 2mm but seem secure enough. He also suggested crimping the bobbins up in a vice. There's no noticeable effect on braking.

    Anyone heard of this?

    Where do you get replacements?

    Main dealer quotes £350 uk pounds each

    Regards,

    Andy (UK)
     
  2. GuzziMoto

    GuzziMoto GT Reference GT Contributor

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    Usually the issue people have with the bobbins is they get too tight and need to be loosened. Too tight can cause the disc to run out of true and the brakes pulse.
    I would compare what you have with what others have.
     
  3. Perazzimx14

    Perazzimx14 Cruisin' Guzzisti

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    Your mechanic would fall over if he saw the really floating front discs on my Ducati 900ss. Thy probably had 2mm of fore/aft movement 20,000 miles ago.
     
  4. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    There does come a point when excessive wear on the rotor/bobbins becomes excessive, but 2mm isn't that point. I have replaced rotors on bikes when the play got so great the bobbins were in danger of falling out. Just for a learning exercise I took the rotors apart and found the bobbins has been worn through is places. Not exactly what you would want to run.
     
  5. draidt

    draidt GT Reference GT Contributor

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    Does your mechanic do the yearly inspection for you ?
     
  6. Guzzilife

    Guzzilife Just got it firing!

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    hi guzziones,
    thanks for all the interest
    i passed the mot inspection
    different mechanic
    satisfying chink from the rotors reminds me they are still there
    just waiting for the snow to bugger off!
     

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