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@dglshrn
'Suiciding' is where you glue the cog onto the thread.
Track hubs have two threads. One for the cog, and one for the lockring that locks in the opposite direction, meaning that when there's a force on the cog from slowing down with legs that tries to untighten it, the lockring keeps it on.
In a 'suicide' set up, the only thing keeping the cog on is glue. The forces involved are quite strong, so it's not a good plan, unless you're planning to do very little leg braking.