The Schnapp Dragon is a modular FPV racing quadcopter frame that can be built strong or light: your choice. It's got a unique \interlocking arm system that lets you change an arm by removing only a single screw.
The Aerodyne-RC Rex is the most brilliant or stupid quadcopter frame design I've ever seen. I can't decide which. It puts the camera at the back of the quad, like a dragster, so that it's protected. It's also got unidirectional-carbon arms. It's ridiculously fiddly to build, and probably a nightmare to maintain. But part of me wonders if underneath this nightmare is an actual work of mad genius.
