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  1. #1
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    Bought a new 7 speed sprocket

    for my old Specialized Hard Rock and a removal tool. The removal tool was the wrong size (I thought it was supposed to fit all shimano casettes) but I managed to get the old cassette off with my home made chain whip and a hammer. Once I removed the old sprockets, turns out my new ones were the wrong size. Is it possible to get a new hub that will fit my new sprocket or should I just get an entire new rear wheel?

  2. #2
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    sounds like you dissembled a freewheel

  3. #3
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    I think so. Problem is the new one doesn't have a big enough hole. Won't fit on the hub.

  4. #4
    SE Wis dedhed's Avatar
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    '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400
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    http://bicycletutor.com/replace-freewheel/

    Cassettes and freewheels are two different animals
    '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400

  5. #5
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    Quote Originally Posted by taos07 View Post
    for my old Specialized Hard Rock and a removal tool. The removal tool was the wrong size (I thought it was supposed to fit all shimano casettes) but I managed to get the old cassette off with my home made chain whip and a hammer. Once I removed the old sprockets, turns out my new ones were the wrong size. Is it possible to get a new hub that will fit my new sprocket or should I just get an entire new rear wheel?
    There are two sizes of shimano splined freewheels. There's the big size, which is by far the most common, and a smaller splinned size that shimano used briefly in the 80s. if you've got the later, take the wheel to a bike shop that's been around 20 years or more, and have them pull it. Unless your a vintage freak, you may never see another, and it's not worth trying to buy the tool.

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