Picked up a Son 28 secondhand for a fair price. Having never owned a dynamo hub before I was, I think just expecting a slight constant resistance when turning the axle by hand compared to a non-dynamo hub. This one feels much more like a cup and cone hub with a pitted bearing surface, very regular clunk clunk feeling (not sound!) when turning the axle. Is that the norm?
Yep. That is the magnets moving between the different coils on the hub. Very normal. Most son hubs are smoother in this regard than others brands however.
Picked up a Son 28 secondhand for a fair price. Having never owned a dynamo hub before I was, I think just expecting a slight constant resistance when turning the axle by hand compared to a non-dynamo hub. This one feels much more like a cup and cone hub with a pitted bearing surface, very regular clunk clunk feeling (not sound!) when turning the axle. Is that the norm?