Sprite, coaxial helicopter

Remember Sprite? The clever coaxial ardupilot helicopter. On Kickstarter 532 backers pledged $406,061 to bring it too life. A new video has hit YouTube. Dimensions & Performance Length: 13.2 inches (350mm) Diameter: 3.8 inches (100mm) Weight: 2.6 lbs. (1,200g) with battery and standard camera Displacement: 215 cu. in. (3,520 cc) Endurance: approximately 10-12 minutes on"

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