Can I conver 9-speed rear wheel to single-speed?- Mtbr.com
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  1. #1
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    Can I conver 9-speed rear wheel to single-speed?

    Hello:

    I can get hold of a good quality 9-speed rear wheel.
    Can I remove the black plastic-like covering on the freehub and fit a single-speed sprocket there?
    The picture is at Sheldon Brown's Bicycle Glossary Ca--Ce and the direct link for the picture is

    Thanks for your help.

  2. #2
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    You can use it as a SS wheel by using spacers, a SS cog, and a lockring
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  3. #3
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    there should be a good explanation of how to do this in the FAQ section link at the top-right of this page.

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  5. #5
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    No. You cannot run a freewheel on a cassette body. As posted above though, you can use cassette spacers and a single speed cog to run your geared wheel as a singlespeed.

  6. #6
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    Thanks guys--I did read the FAQ before posting.
    Th question is "Can I remove the black plastic-like covering on the freehub and then fit a single-speed sprocket (not free-wheel) there"

  7. #7
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    You don't need to remove anything. Just get a singlespeed cog with splines to fit on the freehub, like this. There are lots of SS freehub cogs in a wide range of prices. Any local bike shop or online shop should have some.

    The freehub body is made of either steel, aluminum, or titanium and the outside shell is not removable on its own. It is a structural part that holds the bearings and parts of the ratcheting engagement mechanism (details of the design vary between different hubs)

  8. #8
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    It will look like this (yes is the answer)

  9. #9
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    Just get the spacers like umarth says and run a SS cog. Just make sure to match up the correct chain size - 1/32" or 1/8" etc. If you are running a crank that takes a 1/32" chain then you will need a SS cog that matches up to a 1/32" chain.
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  10. #10
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    Quote Originally Posted by anga View Post
    Thanks guys--I did read the FAQ before posting.
    Th question is "Can I remove the black plastic-like covering on the freehub and then fit a single-speed sprocket (not free-wheel) there"
    No. Without the freehub your hub would look something like this:


  11. #11
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    Quote Originally Posted by AGrant View Post
    Just get the spacers like umarth says and run a SS cog. Just make sure to match up the correct chain size - 1/32" or 1/8" etc. If you are running a crank that takes a 1/32" chain then you will need a SS cog that matches up to a 1/32" chain.
    As Boomn said. And about four others. It is a 3/32(ish) by the way.

  12. #12
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    Quote Originally Posted by ianick View Post
    No. Without the freehub your hub would look something like this:

    Thanks--got it!!
    So, the free wheel mechanism is inside the splined part.

  13. #13
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    Quote Originally Posted by anga View Post
    Thanks--got it!!
    So, the free wheel mechanism is inside the splined part.
    Yes. Newer hubs have the free wheel mechanism inside the freehub body. The cassette slides on to the freehub body. This design is (supposed to be) simpler and cheaper to replace than a free wheel and cassette all in one.

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