Rotor Adaptors

NW Postie
NW Postie Posts: 51
edited June 2014 in MTB workshop & tech
Hi Guys,

Just bought myself some new wheels for my hardtail mtb and need some advise re: adaptors to convert my Centre lock wheels to 6 bolt IS Standard. I'm currently running Shimano XT with RT76 rotors. Is there an adaptor on the market that would allow me to use these or would i be best off getting new rotors of centre lock type?

Any advise would be greatly received.
MTB - Claud Butler Olympus XT
MTB - Cannondale Jekyll 3 2012
Road - Ribble Sportive Bianco/Ultegra 6800
TT - Retro 80's Argos steel Beast

Comments

  • The Rookie
    The Rookie Posts: 27,812
    You can get adapters easily enough, ebay is a good place to start.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • NW Postie
    NW Postie Posts: 51
    Cheers, will check that out. Was curious as an Amazon seller listed the Shimano ones as not compatible with the floating type rotors I've currently got fitted.
    MTB - Claud Butler Olympus XT
    MTB - Cannondale Jekyll 3 2012
    Road - Ribble Sportive Bianco/Ultegra 6800
    TT - Retro 80's Argos steel Beast
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Don't think yours are actual floaters.
  • NW Postie
    NW Postie Posts: 51
    edited June 2014
    These are the rotors i'm currently running
    prod39007_IMGSET?wid=500&hei=500
    MTB - Claud Butler Olympus XT
    MTB - Cannondale Jekyll 3 2012
    Road - Ribble Sportive Bianco/Ultegra 6800
    TT - Retro 80's Argos steel Beast
  • cooldad
    cooldad Posts: 32,599
    They're not.
    Superstar sell them as well I think.
    I don't do smileys.

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  • NW Postie
    NW Postie Posts: 51
    Cheers for all the advise, emailed a few suppliers this morning and they've confirmed that the RT86 and RT76 rotors are not compatible with these adapters. So looks like this weekends purchase is some new rotors.
    MTB - Claud Butler Olympus XT
    MTB - Cannondale Jekyll 3 2012
    Road - Ribble Sportive Bianco/Ultegra 6800
    TT - Retro 80's Argos steel Beast
  • The Rookie
    The Rookie Posts: 27,812
    If the adapters mount the disc in the same place then there should be no compatibility issues UNLESS the 'form' in the middle wraps it back behind the mounting face and that isn't possible on the adapters.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • cobba
    cobba Posts: 282
    The extra thickness of the 6 bolt floating rotor means that there will be less thread on the adapter for the lockring to tighten onto.
  • njee20
    njee20 Posts: 9,613
    FWIW, although they're frequently described as floating, they aren't, they're two piece, but they don't float.
  • stubs
    stubs Posts: 5,001
    edited June 2014
    I used 1 of these on a centrelock rear wheel to mount a RT76 160mm disc.

    http://www.superstarcomponents.com/index.php/en/centrelock-adaptor.htm

    Still got one left I am just down the road from you if you want it its a red one.

    Edit: Just remembered I had to make the holes in the RT76 disc slightly larger to let the pins of the adaptor slip in two of the holes were slightly undersize.
    Fig rolls: proof that god loves cyclists and that she wants us to do another lap
  • stubs
    stubs Posts: 5,001
    cobba wrote:
    The extra thickness of the 6 bolt floating rotor means that there will be less thread on the adapter for the lockring to tighten onto.

    The RT76 centre is the same thickness as a normal solid rotor, as njee says they arent floating if the OP has posted the right picture.
    Fig rolls: proof that god loves cyclists and that she wants us to do another lap

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