I´m trying to get a quad optimized in time flight. But with some marging to transport cameras or FPV staff.
Finally I´ve got this design based in the following:
Dimensions are mid size: 40cm between motors.
- two 1mm CFRP (carbon) plates
- arms in pine wood.
- Propellers: 8x4
- board ArdupiratesNG (I´ll move to AC2 soon) with GPS and sonar
- removing of all non-strictely necesary hardware
-Total weight (with 2200 mA batery) = 650g
Images and details on motor, ESC etc are in the attached file
I´ve got a hovering flight of 17.5 min! and it flies veeery well. It hovers at about of 25% of available power.
A video flying is here: http://vimeo.com/26028981
Hope you like.