Originally Posted by
Drew Eckhardt
A lot of the Shimano cassettes which don't start with an 11 or 12 have a loose cog on the end.
9 speed 13-23 Ultegra cassettes end in a loose 23
9 speed 13-25 Ultegra cassettes end in a loose 25
9 speed 14-25 Ultegra cassettes end in a loose 23 followed by a loose 25
etc.
There's nothing wrong with a "loose" cog when it's slipped onto a steel freehub. I thought the issue here was avoiding digging in with cogs slipped onto alloy freehub bodies. And my comment was that I'm wary of folks torquing down the lockring to use friction to hold the cog in this specific case. On most everything else, I think we're in agreement.