My best shot at a square double-ring offset top in LEGO...
Got the least wobble with studded LEGO construction, but that meant square rings far from wire frames. The squares' median diameter ratio (halfway between inner and outer edges) might arguably have been the one to "goldenize" in that case, but keeping the top to a reasonable size and stiffness ruled that out, too.
So I goldenized the squares' outer diameter ratio as best I could, coming as close as 16/10 = 1.60 in the top above. That meant inner and median diameter ratios of 12/6 = 2.00 and 14/8 = 1.75, respectively -- both far from golden.
Balancing trade-offBefore paving the rings with studless decorative tiles, I'd all but eliminated visible wobble by adding extra parts to the bottom of the rotor with the help of a knife-edge static balancing rig. And this despite the couple unbalance introduced in the process.
Unexpectedly, adding the tiles made wobble reduction much, much harder. As with my stab at a
Cylon raider top, all attempts to improve static balance just made the couple unbalance worse, and vice versa. The trade-off above was the best I could find.
Also tried some studless triangular solutions, but the necessary couple unbalance and resulting wobble were much worse than above.