Originally Posted by
well biked
No, loose-ball hubs for example should have as many balls as will fit in the cup without jumbling. Bottom brackets, too. Headsets are different in that they tend to bind and not be smooth unless you remove an extra ball.
Hmm... maybe it has to do with the fact that the headset doesn't rotate completely like hubs and BBs and the bearings sort of settle into an optimal place for short movements?