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The Chogenbo is coaxial coolness - The Brothers Brick
Over the years several people have constructed mechanisms to get coaxial rotors on their helicopters to spin in opposite directions, including Henry Oberholtzer. Recently one of his ingenious creations was successfully adopted by Matt Hacker for his AH-5 “Chogenbo” (Japanese for Kestrel). The end result is one of the coolest and most believable near-future helicopters […]
Ralph