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  1. #1
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    is englisg threading compatible with ISO track hub

    im building a fixed gear from a 1920s track frame (it is skip tooth) and i need some advice on the rear hub. i have a fixed/fixed (double sided) origin8 rear hub that i had planned to attach a 8t skip tooth cog. it is english threading and from what i gather the difference is 1.375 as to 1.370. i thought that was fine but a bikeshop at my house swore that a skip tooth cog would not be compatible with the hub soo.....

    help me out, i could use some input

  2. #2
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    iso, english and BSA are the samething. One of the things to consider is that probably that 1920 track frame rear end is 110 mm wide and not 120. For sure the orgin8 hub is 120 mm, besides that and putting a track/bmx chain you should not have big problems with your project.

  3. #3
    Senior Member
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    Quote Originally Posted by ultraman6970 View Post
    iso, english and BSA are the samething.
    That is correct. The designation of 1.37 and 1.375 are identical as they are really 1-3/8". Your LBS needs some better information.

  4. #4
    Senior Member surreal's Avatar
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    your lbs suck$. set yourself free

  5. #5
    Senior Member Grand Bois's Avatar
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    [QUOTE=fixedkicks;11556429] i thought that was fine but a bikeshop at my house swore that a skip tooth cog would not be compatible with the hub soo.....QUOTE]

    I think you should use a bike shop that's not at your house.

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