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The faceplate of the thing (which is a lovely brass colour) is engraved with a ‘this way to undo arrow’ so that’s the way this is removed?
That's the way that plate is removed (it's the outer cone of the freewheel bearing): it has a left hand thread. The block itself has a righthand thread onto the hub - otherwise it would unscrew under pedal pressure!
If you hope to re-use the block you will have to find a removing tool that is a near perfect fit to those slots. Any old established bike shop should have one.
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Yeah, take off the plate, eveything comes out for a service! To remove the block, use 2 small allen-heads to fill in where the main part of the pawl sits, and lock the assembly in a vice so that those heads provide an anchor while you rotate the wheel to undo. I use it all the time, it's better than a 2 prong tool, which always destroys the body, and usually the tool too. I think Sheldon may nave explained the technique better than me.
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clubman
The.Gren
@crossedthread
Also, Cyclo freewheels.
It has two ‘slots’ which I guess means a two pronged sprocket to remove it? I’ve two but neither fit as my tools are likely 50 years to new. Is there a specific one?
The faceplate of the thing (which is a lovely brass colour) is engraved with a ‘this way to undo arrow’ so that’s the way this is removed?