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  1. #1
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    KCNC BB30 to Shimano Hollowtech BB adaptor

    Does anyone have any experience with the KCNC BB30 to Shimano 24mm crank adaptor? This gadget includes the bearings with the 42mm dimension BB30 surface and 24mm Hollowtech crank surface all in one unit.

    I have a BB30 road frame coming that I need to run a DA7900 crank in, and have been looking at the various adaptors available. I like the look of this unit, if for no other reason than that the press-fit is achieved by screwing the two cups together with the regular Hollowtech tool. Neat. But that's a moot point if it's a poor design or is unreliable or the bearings only last a month or something.

    Appreciate comments. Thanks.


  2. #2
    Have bike, will travel Barrettscv's Avatar
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    My KCNC BB adapter failed at 2000 miles. My first BB failure ever, however, I'm not sure what caused the failure.
    2014 Trek DS.1: "Viaggiatore" A do-it-all bike that is waiting in Italy
    2012 Pedal Force CG2: "Secolo Bicicletta" the modern carbon fiber road bike
    2012 Pedal Force CX2: "Carbone CX" the carbon fiber CX bike
    2010 Origin 8 CX 700: "Servizio Grave" Monstercross/29er bike
    1997 Simoncini Special Cyclocross: "Little Simon" lugged Columbus steel CX bike
    1987 Serotta Nova Special X: "Azzurri" The retro Columbus SPX steel road bike

  3. #3
    pmt
    pmt is offline
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    What's failed about it?

  4. #4
    Have bike, will travel Barrettscv's Avatar
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    The anti-friction bearings are producing plenty of friction. I'm getting a better opinion tomorrow.
    2014 Trek DS.1: "Viaggiatore" A do-it-all bike that is waiting in Italy
    2012 Pedal Force CG2: "Secolo Bicicletta" the modern carbon fiber road bike
    2012 Pedal Force CX2: "Carbone CX" the carbon fiber CX bike
    2010 Origin 8 CX 700: "Servizio Grave" Monstercross/29er bike
    1997 Simoncini Special Cyclocross: "Little Simon" lugged Columbus steel CX bike
    1987 Serotta Nova Special X: "Azzurri" The retro Columbus SPX steel road bike

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