NSK issue. I had gone into depth with @MarkD as well as several others about this. NSK makes a tighter ID bearing (specifically the Platinum line from what I recall) than the standard bearings. Economy bearings should still be fine
Typically I will avoid NSK platinum bearings unless a yoyo ships with them from factory, meaning the designer has already adjusted the seat for the tighter ID.
As for my testing with the Aspen, NSK Plats are not bearings I typically have on hand so the issue didnt make itself known till a much later date. From our testing, other bearings should be ok and I have not seen any issues using CT’s, Duncan/Diff-e-yo Konkaves, ds economy, etc
@yoyodoc your response is very much appreciated (as are all the others). Far from being clear as mud, it’s clarified things simply.
One question I have, as per @Tempura commenting that some bearings ruin bearing seats, how does that happen?
Say you have a seat that is milled to the spec of the ID of the bearing with coating thicknesses accounted for (so push fit, but not tight), how can this ruin the seat? In my head, that is what you want.
Or is it the fact that the ID of the bearing is too tight or too loose?
And on another note, Ive been adding a really thin smear of silicone grease to the seat of some yoyo’s - not enough to spread into the bearing, but enough to coat it and hopefully prevent any galvanic corrosion/make them easier to remove in the future.
Good idea or bad? It’s probably overkill, but I like fettling and the enjoyment is in the education.
