Originally Posted by
iFixed
That is the tool that I have, and it works perfectly. Not a lot of torque in it if you have a cog that is really stuck, but for the most part it works perfectly for lockrings and cogs.
Use a little bit of liquid wrench or something similar in the gap between the hub thread and cog/lockring. WD-40 should work well enough.
Take utmost care as to no excess would go into bearings. Let it sit for a few minutes ... perhaps a smoke. Then try again with that tool and cog should come free. For me, cogs almost slip off without much more torque than I regularly give.
Correction: You're right, I have to work at it, but I don't jump or hammer on it. That's all I mean by "torque I regularly give". ...