I am making my winter SS bike into a fixed bike, and I will need to do this via the 'bumbike' loctite method of attaching the cog to the hub. I know the limitations of this setup, and that i'm putting my self at risk, etc.
I want as much room as possible for a BB lockring, so I need a thin-ish cog.
Anyone know the widths of the threaded part of:
Surly Cogs? Old/New?