HF3D Ventis

Technical details:
Span: 82cm
MAC: 15.57cm
wing Chord:12.5cm
flaperon root Chord: 4cm
flaperon tip Chord: 3cm
flaperon len: 36cm
Area: 1277cm²
AR: 5.26
Airfoil: E395 with .3cm outwards offset, trailing edge cut
Battery: Tattu 1300mAh 3s or your choice
Motor: racerstar BR2205 2300kv or A2212 1000kv
Prop: APC 8x4F or best match for motor
Mass: 612g with battery
Wing loading: 4.792kg/m²
Fuselage len: 66cm
Tail length: 40cm
Flight Cont: APM2.8 running arduplane

Print 7 ribs minimum, 3 for each side and 1 for the middle of the wing. I tried both 5mm and 3mm foamboard as skining for the wing, 5mm foam was difficult to bend due to the small radius of curvature for the leading edge of the airfoil.

Avoid PLA for the motor mount unless you know the motor temperature will be within reason for the material. I had the Racerstar BR2205 motor melt through its mount in the second video below (but I also had it over proped for more thrust).

See videos below f