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  1. #1
    Junior Member
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    Can i use a fixed cog on a hub for a freewheel?

    Can i use a fixed cog on a hub for a freewheel sprocket?

    i mean i have a wheel with the threaded good for a freewheel, but i was wondering if i can put a cog on it and a lockring, bigger, than the lockring i have for my fixie..is it dangerous? why i cant? or can i?

    thankd
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    Vincent Van Cog

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  2. #2
    Senior Member
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    a lockring for a fixed hub is left hand threaded, so when back pressure is applied to the cog, it doesn't turn the lockring off. People put fixed cogs on freewheel threads with bottom bracket lockrings and use some form of 'adhesive' like JB Weld to keep them on, but it's not 100% safe.

  3. #3
    Villainous huerro's Avatar
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    Sep 2006
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    If you rotafix it on and use a threadlocker you will be ok, but you will need to use your brakes to slow down and stop. No skipping or skidding.

  4. #4
    Senior Member
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    Tempe AZ
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    Mondonico Road, Novaro Randonee Touring
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    Do a search for "suicide" - what you are suggesting is usually called a suicide hub. Some say is is fine and was the norm for years, others say no way, never do it. It is of course the cheapest way to go fixed if you have an old freewheel bike to use...

  5. #5
    Junior Member
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    yeah, in fact i have and old road bike with semi horizontal droput and i removed the cassette and the hub has the same thread as a single speed bike... but yes i forgot the track bike has a anti-clokwise thread...sob... i'll buy new wheelset..even better.!
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    Vincent Van Cog

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  6. #6
    Senior Member SingleSpeeDemon's Avatar
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    Jun 2006
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    Columbia, SC
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    Schwinn Peloton Pro, Colnago Master, Vision R40, Volae Club, Raleigh Record
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    Case closed.
    My Current Bikes:

    • 1993 Giant Kronos
    • 1974 Zeus (in restoration)
    • Cruzbike Silvio

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