The Eco-Flight Systems Standard rogallo main tubes are 6061-T6 1.5 in x 0.058 aluminium, sleeved and plugged at all stress points. Full bushings throughout. The rigging is all 3 3/32 in 7×7 cable, with double nico press fittings at all connections. Front flying wires are vinyl coated. All nuts, bolts and turnbuckles are aircraft quality. Nylon saddles are at tube junctions. The tangs are stamped stainless steel.
The sail is 3.8 oz Howe and Bainbridge stabilised dacron, guaranteed not to flutter or wrinkle at normal flying speeds.
Special features were an anadised 5in kingpost and 4in wide control bar.
The pilot support options were swing seat or prone harness.
15×15
Leading edge: 15 ft
Keel length: 15 ft
Wing span: 19 ft 6 in
Wing area: 141 sq,ft
Aspect ratio: 2.6
Nose angle: 80˚
Sail billow: 8˚
Weight: 37 lb
Pilot weight: 70-100 lb
Takeoff speed: 14 mph
Stall speed: 16 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.5:1
Best L/D speed: 22 mph
Min sink: 450 fpm
16×16
Leading edge: 16 ft
Keel length: 16 ft
Wing span: 20 ft 9 in
Wing area: 159 sq,ft
Aspect ratio: 2.6
Nose angle: 80˚
Sail billow: 8˚
Weight: 38 lb
Pilot weight: 100-120 lb
Takeoff speed: 14 mph
Stall speed: 16 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.5:1
Best L/D speed: 22 mph
Min sink: 450 fpm
17×17
Leading edge: 17 ft
Keel length: 17 ft
Wing span: 22 ft 0 in
Wing area: 180 sq,ft
Aspect ratio: 2.6
Nose angle: 80˚
Sail billow: 8˚
Weight: 39 lb
Pilot weight: 120-150 lb
Takeoff speed: 14 mph
Stall speed: 16 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.5:1
Best L/D speed: 22 mph
Min sink: 450 fpm
18×18
Leading edge: 18 ft
Keel length: 18 ft
Wing span: 23 ft 3 in
Wing area: 201 sq,ft
Aspect ratio: 2.6
Nose angle: 80˚
Sail billow: 8˚
Weight: 40 lb
Pilot weight: 150-180 lb
Takeoff speed: 14 mph
Stall speed: 16 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.5:1
Best L/D speed: 22 mph
Min sink: 450 fpm
All Aero 