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  1. #1
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    Oversized (36t-38t) 9 speed cogs with wide base (Al carrier friendly)?

    I have been toying with the idea of modifying my 9 speed cassette by adding a single oversized cog. Something in the 36t-38t range. My concern is that I have an aluminum cassette carrier, and a typical single cog (as opposed to cogs on a carrier) of that size is going to dig into the carrier pretty good. I've leaned this the hard way with a loose 32t cog, and I assume a larger cog will only be worse.

    What I am looking for is a single cog that has a wide base, like some Single Speed cogs I have seen. They flare out and get thicker where they interface with the carrier. Anybody know of one?

    If I were running 9 speed I'd be looking at the General Lee Wide Range adaptor, but it looks like it only comes in 10 speed. Might be too much $ though.

    Thanks
    15mm is a second-best solution to a problem that was already solved.

  2. #2
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    Quote Originally Posted by kapusta View Post
    I have been toying with the idea of modifying my 9 speed cassette by adding a single oversized cog. Something in the 36t-38t range. My concern is that I have an aluminum cassette carrier, and a typical single cog (as opposed to cogs on a carrier) of that size is going to dig into the carrier pretty good. I've leaned this the hard way with a loose 32t cog, and I assume a larger cog will only be worse.

    What I am looking for is a single cog that has a wide base, like some Single Speed cogs I have seen. They flare out and get thicker where they interface with the carrier. Anybody know of one?

    If I were running 9 speed I'd be looking at the General Lee Wide Range adaptor, but it looks like it only comes in 10 speed. Might be too much $ though.

    Thanks
    Why not use the Shimano 12-36 9 speed, isn't that 36 spider/unit a couple cogs wide?

  3. #3
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    Oversized (36t-38t) 9 speed cogs with wide base (Al carrier friendly)?

    Quote Originally Posted by Deerhill View Post
    Why not use the Shimano 12-36 9 speed, isn't that 36 spider/unit a couple cogs wide?
    No. The 12-36 9-sp is individual cogs.
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  4. #4
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    There is this one from MTB Tools on eBay.
    36 Tooth Cog for Mountain Bike Cassette 36T Sprocket | eBay

    Otherwise, what hub are you running? Maybe there is a steel freehub body available for your hub that would allow you to use the Shimano 12-36 tooh 9 speed cassette.

    Hope and King for instance offer steel freehub bodies.

  5. #5
    Bicyclochondriac.
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    Quote Originally Posted by Nater View Post
    There is this one from MTB Tools on eBay.
    36 Tooth Cog for Mountain Bike Cassette 36T Sprocket | eBay

    Otherwise, what hub are you running? Maybe there is a steel freehub body available for your hub that would allow you to use the Shimano 12-36 tooh 9 speed cassette.

    Hope and King for instance offer steel freehub bodies.
    I did see that one, but it does not look to me like it gets thicker at the base. I asked the seller just in case.

    I have a hope pro 2 hub, the first generation. I have considered looking into a steel body, but again that is getting into more $ than I would like to spend.

    EDIT: Just heard back from the seller it is a uniform thickness, NOT flared at the bottom.
    15mm is a second-best solution to a problem that was already solved.

  6. #6
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    Quote Originally Posted by shiggy View Post
    No. The 12-36 9-sp is individual cogs.
    Luckily This thread is here, was about to pick one up for my ss.. thanks shiggy.. You seen if the 10 speeders have a sprocket unit there? May have to mod one of those

  7. #7
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    someone used to make an adapter to mount 4 bolt chainrings onto a shimano freehub. this was a few years back and i couldn't find it via google search so they might not be around anymore.

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