@@nickwilson4165VTEC is kind of a valve thing, when a motor with VTEC is at high rpm (around 6k) they open more the valve that controls the oxygen, making more oxygen get into the engine, therefore making more power at a higher rpm, normally up to 8k
So apparently the outer diameter of a CD is 120 mm inner diameter 15 mm, and its weight is 16 grams. I just figured out that the g forces on the CD spinning at 30 thousand RPM are... just over 30 thousand g's, and the total outward force is almost a thousand pounds. Wow. It's amazing it can withstand being spun up to that level. Also amazing that electric motors can spin that fast.
It is a vacuum cleaner motor, and those things sound like jet engines, so it isn't suprising. I mean, mass produced server hard drives from decades were going at 15 thousand RPM with much heavier platters of spinning rust, and more than one, and they had to do that 24/7 for a decade I would guess.