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Help! Removing rear shimano cassette??

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Help! Removing rear shimano cassette??

Old 07-10-14, 07:13 PM
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PIZZ
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Help! Removing rear shimano cassette??

Anyone know a quick way to get this outer lockring off an old 26" wheel? I've been banging the hell out of it with a hammer and flathead with no luck and my lockring tool will take 4 weeks for delivery
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Old 07-10-14, 08:03 PM
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peterw_diy
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MF-HG20 is a thread-on freewheel, *not* a cassette.
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Old 07-10-14, 08:42 PM
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No way to remove that without a lockring tool - which is also a freewheel removal tool BTW.

Yes, let me repeat - it's not a cassette.

Freewheels are a PITA to remove since they get screwed in real tight from pedaling. I've used 15" spanners and banging it with a mallet. Whatever you do, DO NOT DISASSEMBLE THE WHEEL. You will need the rim/wheel to provide leverage when removing the freewheel. You can also clamp the removal tool onto a bench vise and use the entire wheel to turn counter-clockwise.

Good luck.
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Old 07-10-14, 09:01 PM
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Originally Posted by e_guevara View Post
No way to remove that without a lockring tool - which is also a freewheel removal tool BTW.

Yes, let me repeat - it's not a cassette.

Freewheels are a PITA to remove since they get screwed in real tight from pedaling. I've used 15" spanners and banging it with a mallet. Whatever you do, DO NOT DISASSEMBLE THE WHEEL. You will need the rim/wheel to provide leverage when removing the freewheel. You can also clamp the removal tool onto a bench vise and use the entire wheel to turn counter-clockwise.

Good luck.
I agree. Get the correct tool. Nothing else will work.

If you're trying to remove it in order to put the "cassette" on a new wheel, forget it. They are completely different and not interchangeable.

Good info: Freewheel or Cassette?
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Old 07-10-14, 10:15 PM
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Ok tnx. now that clears it up, thought it was a loose cassette. Ive been stuck in the modern age too long. Just ordered the right tool!
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Old 07-10-14, 10:20 PM
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WHile you're waiting for the tool to arrive, read what Sheldon has to say about removing freewheels.
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Old 07-10-14, 10:36 PM
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Thanks I know the site, ill read up some more!

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Old 07-11-14, 10:54 AM
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One thing im not sure on is can you fit a single speed freewheel in place of this freewheel cassette? This wheel is from an older 90's mtb.
Seems from what ive read you can but might be difficult lining up the chain line...
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Old 07-11-14, 11:03 AM
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Sheldon to the rescue again...

The cheapest way to convert a multi-speed bicycle into a fixed gear is to use the original rear hub, assuming that it is made for a conventional threaded freewheel. A fixed sprocket will thread right on, but there is no provision for a left threaded lock ring.If you go this route, it is a good idea to use LocTite or a similar thread adhesive. You can use an old lock ring from a British-threaded bottom bracket as an additional safety measure, it is the same thread.Although you can just screw on the sprocket and put everything together, the chain line will probably be incorrect. If you go this route, you will usually need to re-arrange spacers on the axle to correct the chain line, then re-dish the wheel so that everything will track correctly.
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Old 07-11-14, 02:00 PM
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single speed freewheels i have used (shimano, ACS) fit on an oldschool thread on freewheel hub. (there are some BMX, i think, hubs that have a smaller attachment.) they also fit on a hub designed for a track cog with a reverse threaded lockring.
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Old 07-12-14, 09:28 AM
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Originally Posted by PIZZ View Post
One thing im not sure on is can you fit a single speed freewheel in place of this freewheel cassette? This wheel is from an older 90's mtb.
Seems from what ive read you can but might be difficult lining up the chain line...
The freewheel will thread on, but the chainline will be wonky. You can modify the rear wheel by moving spacers around and then adjusting spokes to change the dish of the wheel, but that's fairly advanced mechanically. I've done this and it works OK if you know what you're doing.
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Old 07-12-14, 01:29 PM
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Ditto on freewheel tool and bench vise. It will come off easily. I also agree to what anyone says positively about Sheldon Brown and Harris Cyclery pages.
sheldon's site got me through a lot of pain when I took my beloved '86 Cilo out of storage earlier this century and started riding it again.
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