Originally Posted by
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Should I tighten a lock ring very tight or just a little. And also does rotafix work?
I'd recommend you always use a proper chain whip to put on/take off cogs. You'll get varying opinions on lock rings. I always use them, and they do not need to be anywhere near as tight as the cog. You have a lot fewer threads to deal with there, and it might be easy to strip them.