I know we're getting in the weeds here, but has anyone ever rebuilt one of these headsets with loose bearings? That seems like it might be a good way to avoid upside down cage bearings while also increasing bearing contact surface?
Yes, it’s definitely a better way to go, but more of a pain during assembly.
I use the green Park bicycle grease, and it’s got a good consistency for holding the balls in place while screwing everything together.
I get the fork crown bearings seated nicely, then turn the assembly upside down, so that I can see that the bearings in the top cup don’t move or wander off.
Once it’s all together and adjusted properly, it’s as smooth as glass.
The only down side to loose balls in the headset, is if it’s allowed to get loose and sloppy down the road, you can lose ball bearings, that aren’t being retained.
So, my advise would be to keep the retainers just for assembly and poor maintenance issues.
All the high end performance bikes use loose balls throughout the assembly.
The Paramount headsets, are unreal?
Something like 32 balls per cup.
You haven’t lived until you’ve unscrewed the headset on an old paramount, and seen 64 little BB’s disappear across your garage floor. Lol!