Racing Drone Sets Guinness Speed Record at 163 MPH

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#5453199
https://forums.guru3d.com/data/avatars/m/248/248721.jpg
How the hell such a small drone can grab so much air with those tiny propellers to be able to achive these insane speeds!? On what rpm motors are working on those, 30K, 50K, more?
#5453210
https://forums.guru3d.com/data/avatars/m/215/215435.jpg
How the hell such a small drone can grab so much air with those tiny propellers to be able to achive these insane speeds!?
Negative pressure, inertia and a lot of electrical current!
#5453233
https://forums.guru3d.com/data/avatars/m/243/243702.jpg
I am into RC and electronics. But I prefer slow as hell bi-plane. It is more enjoyable to control. And can stay in air much longer with same battery.