Originally Posted by
Aeroplane
It doesn't matter how tight you get the lockring if the cog isn't on super-freaking tight to start with. Mash up a hill to get the cog tight. At the top, hop off and tighten the **** out of the lockring. Done.
+1. It is way more important to get the cog Super Freaking Tight first, and mashing up a hill is the way to do that.