Buteo V3 with foamed polypropylene Wing
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                                                                        VTR 1 (You Tube)

                                                                         VTR 2 (You Tube)

                                                                         VTR 3 (You Tube)

                                                                         VTR 4 (You Tube)

width 110.0 cm
length 65.0 cm
weight 370.0
Lipo 3cell 11.6V 600mAh 50.0
Total flight weight 420.0

Wing 3

Buteo V3 with body (+22g)


Wing 1    (Wings are heavy, and load to a motor is high.
                  So, ButeV3 cannot fly well)

the fuselage equal with YardHawk
Receiver: Castle Creations Berg Microstamp 4L 4Ch Micro Rx FM
cryistal: Castle Creations Micro Crystal Berg 52(72MHz)
Servo: elevator (Hitec HS-45 Feather Premium High Speed/Torque Servo ), rudder (do)
Motor: brushless motor Waypoint 2209 1820Kv
ESC: Castle Creations Thunderbird-18 Brushless ESC
Battery: Lipo 3-cell. 11.6V 600mAh
Control: 5CH (a motor, V tail 2ch: rudder and elevator), aileron-rudder mixing
Gliding sysytem GLDAB
Wings: made by 45 times foamed polypropylene Core, 4mm and 2mm carbon rods, Ripstop(0.65oz), Power rip, Super Seam Tape 9460PC
Wing profile S4083 modefied
Gear Main Gear 32P64T  acetal https://sdp-si.com/ss/PDF/79001107.pdf
First gear 48P84T https://sdp-si.com/ss/PDF/79001084.pdf
Pinion Gear: 48P 24T