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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 11-21-17, 01:03 PM   #1
12strings
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convert single speed to fixie without new hub?

I'm sure this has been asked before, but is it possible to convert a stock single-speed (like a cruiser or bmx) to fixed gear, without rebuilding the rear wheel around a new hub? Something you can add or remove to make it not spin?

Thanks.
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Old 11-21-17, 01:22 PM   #2
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Old 11-21-17, 01:27 PM   #3
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Originally Posted by 12strings View Post
I'm sure this has been asked before, but is it possible to convert a stock single-speed (like a cruiser or bmx) to fixed gear, without rebuilding the rear wheel around a new hub? Something you can add or remove to make it not spin?

Thanks.
It is highly ill advised to mess about trying to convert a FW hub to a FG, this is known as a "Suicide Hub" for good reasons. Using a Track-style hub w/ the FG cog prevented from backing off by the reverse thread lockring is the only safe set-up. Proper FG rear wheels are inexpensive, and impressively so compared to massive dental re-construction or a stay in the ICU.

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Old 11-22-17, 12:53 PM   #4
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That's a front wheel.
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Old 11-22-17, 01:11 PM   #5
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You can use a bottom bracket lockring on a hub. It works as long as you keep in mind it is right hand threaded just like the cog. If you try to skid, you will probably unscrew both and be in "neutral". Don't do this if you plan to ride brake-less! My first fix gear wheel was a standard 5-speed freewheel wheel with the cog and the BB lockring screwed on. It worked well enough that when I tried to coast, I got shot into the air and dumped unceremoniously on the road. Bike was fine. I never did unscrew that cog and rode that wheel several years. But I always had and used brakes. Skidding to stop was a foreign concept then. We rode fix gears for 1) winter training and 2) winter riding because they were superior in snow, not for showing off.

If you have a single speed wheel, check that you have enough threads for both the cog and the lockring before you do this. I never tried that, just went straight from the road 5-speed freewheel hub to a fix gear hub

Ben
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