I made the rotor from pieces of Gunther prop, bent to shape using a hair dryer. A real DF, no clipped crossed props.
On 7 cells 500 AR it has a static thrust of some 190 gr (7 oz) at 8V, 8.5 amps and 30.000 rpm. A skinned receiver and two 9 gr (0.3 oz) servo's, a little ESC.
In this confuguration the pibros weights about 350 gram's (12.4 oz). It uses 3 holes at the bottom of the wing as a finger grip for launching. It launches nicely, no catapult needed.
It flies marvellously. Rolls, loops and low fly bys are no problem. 4 min's flying time, so some 7.5 amps in flight.
On 8 cells it flies much better, but flying time goes down. Making a mistake is no problem at all - it just bounces off the ground. Reconnect the battery, launch it, and off it goes again! We even flew it inside a gym, indoor.
