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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 04-27-06, 02:49 PM   #1
Re-Cycle
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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
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Old 04-27-06, 03:06 PM   #2
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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
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Old 04-27-06, 03:18 PM   #3
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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

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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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Old 04-27-06, 03:23 PM   #4
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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
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Old 04-27-06, 03:27 PM   #5
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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.
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Old 04-27-06, 03:36 PM   #6
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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.
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.
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Old 04-27-06, 04:07 PM   #7
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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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Old 04-27-06, 04:11 PM   #8
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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?
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