Freewheel question.........- Mtbr.com
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  1. #1
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    Freewheel question.........

    I am having problems with a freewheel I salvaged from a friend's bmx. I have a standard 32 tooth chainring and a 9sp chain and the problem is that the chain does not sit on the freewheel properly. It is as if the tooth spacing on the bmx freewheel is slightly wider than the chainring. I thought that I could pretty much use any bmx freeweel but obviously this isn't working. Any thoughts? Do I need a specific type of freewheel?

  2. #2
    bon vivant
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    Quote Originally Posted by FrontRanger
    Do I need a specific type of freewheel?
    the tooth spacing is the same, but your chain is too narrow for the BMX fw. get a 1/4 inch chain or a 9spd compatible freewheel.

  3. #3
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by truman
    the tooth spacing is the same, but your chain is too narrow for the BMX fw. get a 1/4 inch chain or a 9spd compatible freewheel.
    That would be a 1/8" chain. Derailleur chains are 3/32" wide (or narrower).
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  4. #4
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    Thanks for the info guys. Picked up a 1/8" chain and all is good. There does seem to be some play on the front chainring but this is obviously due to it being narrow for a 3/32" chain. Will this be a problem? I assume once I get a dedicated SS chainring it will be thicker.

  5. #5
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by FrontRanger
    Thanks for the info guys. Picked up a 1/8" chain and all is good. There does seem to be some play on the front chainring but this is obviously due to it being narrow for a 3/32" chain. Will this be a problem? I assume once I get a dedicated SS chainring it will be thicker.
    No worries. A wider chain on narrow rings/cogs works just fine.
    mtbtires.com
    The trouble with common sense is it is no longer common

  6. #6
    'r you some kinda ssissy?
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    chainging width

    the dedicated ss chainring wont be any wider unless you use bmx chainring and cranks. you migh condider sticking with 3/32 compatable parts as much as possible. when the freewheel and chain die use a 3/32 chain and freewheel.

  7. #7
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    Quote Originally Posted by ssissy
    the dedicated ss chainring wont be any wider unless you use bmx chainring and cranks. you migh condider sticking with 3/32 compatable parts as much as possible. when the freewheel and chain die use a 3/32 chain and freewheel.
    Makes sense. Now I just need to find a freewheel that specifies 3/32". None that I have found seem to specify one way or the other. Thanks for all the help guys. Build pics to follow shortly.

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