Buteo V2 with foamed polypropylene Wing
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                                                                                         VTR 1 (You Tube)
                                                                                             VTR 2 (You Tube)

                                      VTR 3 with GLDAB (Gliding system) and Lipo 3cell (You Tube)

                                                   VTR4   Buteo Flat Tail (You Tube)
                                          VTR 5 Buteo V2 with Body(YouTube)

                                          VTR 6 Buteo V2 Looping (You Tube) 2008/9/14

                                          VTR 7 Buteo V2 with Body Looping (You Tube) 20008/9/15

                                          VTR 8 Buteo V2 Looping near the ground 2008/9/28

                                          VTR 9 Buteo V2 Looping and Spin Dive (like Stoop) 2008/10/5

                               VTR 10 Buteo V2 Looping & SpinDive & Stall turn 2008/10/13

width 107.0 cm
length 62.5 cm
weight 338.0
Lipo 3cell 11.4V 650mAh 50.0
Total flight weight 388.0

Wing 2

Buteo V2 with Boby(+22g)


the fuselage 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: Waypoint 2209 1820Kv motor
ESC: Castle Creations Thunderbird-18 Brushless ESC
Battery: Lipo 3-cell. 11.4V 650mAh
Control: 3CH (a motor, V tail 2ch: rudder and elevator)
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 32P56T Stainless Steel  https://sdp-si.com/ss/PDF/79001099.pdf
First gear 48P66T   Acetal https://sdp-si.com/ss/PDF/79001084.pdf
Pinion Gear: 48P 16T

   Brief Design (JPEG file 1625Kb)

Connection of Carbon in wings