But if they're not squeaking or grinding, there's no need for them to be super smooth and spin forever. I believe the friction they'll give when under load is not necessarily related to the friction when you spin them with your hands - external bottom brackets are like this too.
But if they're not squeaking or grinding, there's no need for them to be super smooth and spin forever. I believe the friction they'll give when under load is not necessarily related to the friction when you spin them with your hands - external bottom brackets are like this too.