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  1. #1
    <3s bikes Re-Cycle's Avatar
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    Can you use a Arai drum brake on a flip-flop hub?

    The manual states it can be used on tandem hubs or any other type with right handed threads on the left side. Isn't that what a flip flop hub uses?

    Scope it:

    http://www.qbp.com/diagrams/Manuals/arai/arai_drum.pdf

  2. #2
    Iguana Subsystem dolface's Avatar
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    well, when the ss side is on the left, the threads are left-handed

    so i'm guessing that the drum would unthread

  3. #3
    Cornucopia of Awesomeness baxtefer's Avatar
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    Quote Originally Posted by dolface
    well, when the ss side is on the left, the threads are left-handed

    so i'm guessing that the drum would unthread
    no they're still right handed while on the left

    The largest manufacturer of this type is Arai, whose brakes are screwed onto hubs with conventional freewheel threading on the left side of the rear hub and operated via Bowden cables.
    you can thread it on, but do you have the required chainstay clearance to accomodate it?
    aren't tandem rears usually 140 mm?
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  4. #4
    <3s bikes Re-Cycle's Avatar
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    Well daing, you are right. But what about if you used the drum brake on the right side, and did a left side fixed drive. At least that way you'd have a lock ring holding things together.


    Any other suggestions on making a rear drum brake on a fixed hub?

    Danka

  5. #5
    Iguana Subsystem dolface's Avatar
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    Quote Originally Posted by baxtefer
    no they're still right handed while on the left

    hi, my name's dolface and i'm an idiot.

    thank you.

  6. #6
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    Quote Originally Posted by Re-Cycle
    Well daing, you are right. But what about if you used the drum brake on the right side, and did a left side fixed drive. At least that way you'd have a lock ring holding things together.
    If the brake is on the left side and you use it, the brake would tighten, not loosen. No lockring needed (Unless you were using the brake while riding backwards, really fast).

    If it was on the right side, braking would loosen it.

  7. #7
    Cornucopia of Awesomeness baxtefer's Avatar
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    Quote Originally Posted by dolface
    hi, my name's dolface and i'm an idiot.

    thank you.

    well it's left threaded if it's on the right and you're looking at it from the left.
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  8. #8
    i am sure that i hate you spud's Avatar
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    Quote Originally Posted by dolface
    hi, my name's dolface and i'm an idiot.

    thank you.
    didnt you recently put some cranks on incorrectly too?
    putting the pi back in pirate!
    Itís an upstanding member of the solar system
    Apply the laws of earth and make it a victim
    Of Proposition 187

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