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Chain Games 5: For want of a tool...

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Chain Games 5: For want of a tool...

Old 06-09-07, 03:47 PM
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Chain Games 5: For want of a tool...

Thinking that the worn-out cassette with the Tourney group on my hybrid tank used a UniGlide (UG) freewheel (it has a UG chain, but see post #2), I determined to remove the lockring and flip the cogs over. What a PITA operation! The only tool I have that fits is a big Park hook spanner. Here are the contestants:



There has got to be a better way! Yet I can find no tool to do this job more easily. Anyone know of one?


Btw, the lockring is conventional, not reverse, threaded.
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Old 06-09-07, 03:48 PM
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Oh yeah, after I got the #^&@ lockring off, I figured out that this is a HyperGlide (HG) freewheel. Any problem using a UG chain with an HG freewheel?
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Old 06-10-07, 06:14 PM
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No takers, eh?

The procedure I finally used might help others. The problem is that you have to hold the chain whip in one hand and the hook spanner in the other. It doesn't take more than a slight wobble to jar the spanner free. I finally clamped the thing in the bench vice which held the spanner on pretty well and braced the whip against the bench top. Then I was able to whack the spanner with a dead-blow hammer.

Even this procedure is problematic. You can't clamp too hard because the spanner is the front surface, so the whole freewheel wants to exit the vice. Only one, maybe two, whacks and you have to remount the whole thing. It also helps to wire the chain whip in place.
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Old 06-10-07, 06:16 PM
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Obtain this tool:

http://adfarm.mediaplex.com/ad/ck/71...QQcmdZViewItem

One pin, hook spanners are garbage.
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Old 06-10-07, 06:21 PM
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Cool! Bet it would work great. Odd it didn't show up when I searched eBag.

Kinda pricey, though. Think I'll try my big vice-grips or a pipe wrench on this one; it's ruined anyway (the cogs, not the lockring).
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Old 06-10-07, 08:22 PM
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Originally Posted by operator
Obtain this tool:

http://adfarm.mediaplex.com/ad/ck/71...QQcmdZViewItem

One pin, hook spanners are garbage.
Oooh!

I feel the sudden "need" for a new tool...
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Old 06-10-07, 08:28 PM
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I'm a little lost on this thread. Please educate me. What kind of freewheel uses a lockring? I've had several Shimano and Suntour varieties, including single speed, but have never used a lockring.
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Old 06-10-07, 08:45 PM
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Originally Posted by vpiuva
I'm a little lost on this thread. Please educate me. What kind of freewheel uses a lockring? I've had several Shimano and Suntour varieties, including single speed, but have never used a lockring.
Originally Posted by DMF
used a UniGlide (UG) freewheel
Yes.
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Old 06-11-07, 06:54 AM
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You mis-read my post. I took the freewheel apart because I thought it was a UG and thus had reversible cogs. In fact it is a HyperGlide (HG) freewheel. Code stamp is MF-HG20. Splined, not screw-on, cogs.

Apparently some used lockrings and some used the small cog in that role (for which you'd use two chain whips). I don't think either UG or HG freewheels were predominately of one type or the other.
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