I came across this unique Shimano cassette where the smallest cog is also the lockring and the threads are on the outside of the freehub.
What are these called? I guess it was one of those short-lived Shimano inventions?
It's Shimano Uniglide, which preceded Hyperglide, the current standard.
Originally Posted by slopvehicle
Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.