Folding propeller design which rotates around the boom for UAV and RC planes

YOUR LINK HERE:

http://youtube.com/watch?v=-57rHOAdzAI

Recorded on iPhone. Lighting is poor, but clearer in full-screen HD. • Plane demo usage: • 'Boom-prop' design for UAV and R/C pl... • Tricopter demo usage: • The Boomcopter: Not what you first th... • Autoguro demo usage: • Boom-prop powered Autogyro / Gyrocopter • Another assembly video: • Let's make boom-props! (STL files in ... • Turnigy 2217-16T 1050kv (71g) motor • 2:1 gear reduction • 13 x 8 Aeronaut folding props • 14.8V battery, 320 Watts, 21.6 Amps • 1850g thrust, 50 MPH pitch-speed (5.8g/W) • The Boom-prop is a motor-mount where the propeller uniquely rotates around a tubular boom. The assembly can be clamped anywhere on the boom, so making adjustments to your plane's CG very easy. • There's no limit to what size prop you can use. Your prop will never strike the boom, as it rotates around it. You can even have cables (from the tail servos or video tx) going THROUGH the centre of your prop, which messes with your head to start with, but is very cool! • You could have multiple Boom-props on one boom, counter-rotating, or switch between a very large shallow-pitch prop for super-efficient climbing and a much smaller, steeper-pitch prop for efficient cruising. • It's light weight and since it uses a tooth belt and quality bearings, it's also very quiet, efficient too and free of any slop or vibration.

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