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Thread: Frame Dimensions and Tolerances

  1. #1
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    Default Frame Dimensions and Tolerances

    As this is my first post, I would first like to say how impressed I am with all of the work and skill I have seen from individuals on this forum. I humbly ask what may be a stupid question:

    I am currently involved in a project involving prototyping composite folding bicycles. After searching online and on this forum, I have been unable to find dimensions for different aspects of a frame. For example, for a head tube to accept press-fit cups for an 1 1/8 headset, what is the nominal ID and tolerance? Is there a readily available resource or documented standard for these types of dimensions (dropouts, BBs, seat tube ID)? I know it's no accident that well made bicycle frames fit together and interface with components well.

    Thanks for any input.
     

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    Default Re: Frame Dimensions and Tolerances

    Chris King supplies dimensions and tolerances for their headsets in their printed owners manuals.

    http://chrisking.com/files/upload/in...oThreadSet.pdf

    Owner's Manuals & Tech Documents | Chris King Precision Components
    steve cortez

    FNG

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    Default Re: Frame Dimensions and Tolerances

    Start with this Sutherland's Bicycle 7th Edition

    It won't answer everything you want to know, but it is the closest thing the industry has to a standard, I think.

    You are in the right place for the rest.
     

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    Default Re: Frame Dimensions and Tolerances

    are you gluing aluminium bits in or molding the fits
     

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    Default Re: Frame Dimensions and Tolerances

    Gluing aluminum bits for now (dropouts, head tube, seat tube, etc.)
     

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