This LEGO top does 8-fold rotational symmetry the hard way -- and it's not an easy symmetry to begin with. I like this original rotor color scheme the best...
The 140 g, 160 mm top easily tolerates 1,000 RPM starts with a best spin time of 75 s. Since the chassis allows a bit of (stiff) relative motion between adjacent rotor panels, it takes some fiddling to get the rotor balanced. But wobble's minimal when you do.
As a color-mixing experiment, replaced the rotor's inner yellow ring with red, green, and blue parts adjusted to mix to dark gray at speed, with the goal of matching the adjoining dark gray ring already there...
In person, the color-mixing version looks like this at speed...
But in a photo or video with automatic cameras settings, it looks more like this...
The flat 8-fold rotor is a simplified version of a SNOT (studs not on top) building technique some call the "magic circle". Nothing magic, though. Since 360° / 8 = 45°, you just have to get the 8 identical wedge-shaped panels to meet at 45° angles at every step from the center outward.
The good news: The rotor has a very smooth, low-drag upper surface.
The bad news: You still get a lot of drag from the chassis underneath the rotor. But so be it. Pointing studs inward or outward is a recipe for catastropic centrifugal failure in any LEGO top, and the chassis has to prevent that.