Thread: Discussion Monotwirl Electric Autogyro
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Old Aug 07, 2011, 04:31 PM
dominic_baker is offline
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Joined Apr 2011
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I've built a Monotwirl to Al's plans, everything to the original design with the exception of building a ballraced rotor hub and aluminium rotor tilt mechanism. I made the rotor using parts from a spare cheap brushless motor (as shown in photos). Total weight is 228g (8.05 oz) including 500mAh 3S Lipo. UHU Por used for joining the Depron blades to the 3mm ply rotor discs.

Motor = EMAX CF2805 1600kV brushless

ESC = 10A Hobbywing

Prop = GWS 8x4 DD (on propsaver)

Battery = 500mAh 20C 3S Lipo

Servos = 9g for rotor tilt and 5g for elevator and rudder

Rotor = made using EMAX CF2805 brushless motor parts.

This comboination pulls about 10A 11V 110W max (2S about 50W felt underpowered and did not have enough power to climb - was using full throttle just to stay level.) I dont need to use full throttle with the current 3S setup and use about 75% throttle on launch.

Flies very well straight from the first flight. Has had about 8 flights now. Now that it is trimmed the rotor is tilted down by approx 10 degrees to the right; elevator is slightly up (1-2mm); rudder is straight.

Photos attached from before final decoration.


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Last edited by dominic_baker; Aug 07, 2011 at 04:37 PM.
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