http://gizmodo.com/dont-blink-or-youll-miss-the-worlds-fastest-drone-flyin-1796917699
"Pushing the technology that goes into the DRL’s Racer3 to its limits,
those same engineers recently designed and built a high-performance
racing craft called the DRL RacerX. Weighing just 800 grams (1.7
pounds), the RacerX is powered by a pair of 1,300 mAh batteries and four
electric motors that can each hit speeds of up to 46,000 RPMs."
Yow, I wouldn't want to get hit by one of those!
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