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  1. #1
    Nigel nfmisso's Avatar
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    Arai drum - what thread on the wheel?

    What is the thread size, pitch and direction on the hub for mounting an Arai drum brake?

    I have an idea for something a little different to mount in the same location, and would like to know this information to be able to finish my design.

    Thank you

  2. #2
    Senior Member
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    I don't know the specs, but I believe it's the same as freewheel threads, so you could look that up.

  3. #3
    Nigel nfmisso's Avatar
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    thank you !!!

    I will double check using an old freewheel; probably won't be till June due to business trips.

  4. #4
    Nigel nfmisso's Avatar
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    '82 SR Sierra Sport, GT (green), Trek T50 tandem, Jack Taylor tandem, Schwinn World Tourist, Diamondback Pathway
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    confirmed; it is 1.375 inches by 24 threads per inch.

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