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  • What do these numbers mean? Crown Race and Steerer Tube measurements
  • TimothyD
    Free Member

    ''Fits one inch head set of 26.4mm crown race.

    British 1 x 24 steerer tube length 205mm. 55mm threaded section included.''

    What do they all mean basically?

    I know they're for road bike forks which go with headsets which are British one inch and threaded, with 55 mm of thread at the top, but what about 1 x 24, and the 26.4mm crown race mreasurement? Would they be for a standard 1 inch Campagnolo road headset measurement?

    Many thanks

    Tim

    Posted 14 years ago
    TimothyD
    Free Member

    bump for sunday

    Posted 14 years ago
    coatesy
    Free Member

    I believe the 1×24 is the diameter-1" and the thread pitch of 24 threads per inch (standard as I recall).The 26.4mm is probably the diameter of the raised portion that the crown race presses onto.
    Wouldn't hazard a guess if anything by Campag would fit, they seem to have their own standards for other stuff.

    Posted 14 years ago
    TheChunk
    Free Member

    Link to Sheldon Brown

    Sounds like a "1" ISO Standard" with 26.4mm being the I.D. of the crown race.

    Posted 14 years ago
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