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JR Ninja 400MR

Your 3-D flight experience awaits. Article, photos, and video by Chris Mulcahy Read the full article in the August 2015 issue of Model Aviation. Multirotor is definitely a buzzword these days and most of the time it’s used in reference to high-tech, self-stabilizing, GPS-guided camera platforms. A small percentage of multirotors, however, are used for something slightly different. These aircraft do not have GPS guidance, they don’t carry a camera, and did I mention that they can hover upside down? 3-D quadcopters are incredibly fun and challenging to fly. Although…

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