UP Redtail was an ordinary rogallo with a short keel. A 1977 hang glider for intermediate pilots.
The Redtail features a J-wire nose cambering device, deflexers and sail mounted cleats. It has adjustable centre of gravity bar mounting bracket. The airframe is made from 6061 T-6 aluminium tubing with spars 1.5in x 0.049 and sleeves 1 5/8in x 0.058. Sprcial Ultralite Products “saddles” are used at all tubing joints to distribute loading over tube surfaces.
Rigging cable is 304 3/32in 7×7 stainless steel. Flying wires are not adjustable. Landing wires are turnbuckle tensioned. All bolts, washers, and nuts are grade 7 aircraft. The nose plate, tangs, control bracket, and kingpost bracket are stainless steel. The sail is Howe & Bainbridge 3.8oz stabilised dacron. All sails come with centre tail portions red. There was a choice of 11 colours for the remaining portion of the sail. The sail has applied leading edges for minimum airfoil distortion. A swing seat was included or optional prone harness.
There was another version of this glider that had a two foot shorter keel and was called Super Redtail.
17×15
Leading edge: 17 ft
Keel length: 15 ft
Wing span: 22.3 ft
Wing area: 156 sq,ft
Aspect ratio: 3.2
Nose angle: 82˚
Sail billow: 3.8˚
Weight: 32 lb
Pilot weight: 110-130 lb
Takeoff speed: 12 mph
Stall speed: 12 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.8-1
Best L/D speed: 20 mph
Min sink: 392 fpm
18×16
Leading edge: 18 ft
Keel length: 16 ft
Wing span: 23.6 ft
Wing area: 177 sq,ft
Aspect ratio: 3.15
Nose angle: 82˚
Sail billow: 3.8˚
Weight: 24 lb
Pilot weight: 120-165 lb
Takeoff speed: 12 mph
Stall speed: 12 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.8-1
Best L/D speed: 20 mph
Min sink: 392 fpm
19×17
Leading edge: 19 ft
Keel length: 17 ft
Wing span: 24.9 ft
Wing area: 199.5 sq,ft
Aspect ratio: 3.1
Nose angle: 82˚
Sail billow: 3.8˚
Weight: 26 lb
Pilot weight: 160-190 lb
Takeoff speed: 12 mph
Stall speed: 12 mph
Max speed: 40 mph
Best glide ratio (L/D): 4.8-1
Best L/D speed: 20 mph
Min sink: 392 fpm
Redtail 150
Wing area: 15 m²
Wing span: 9.41 m
Aspect ratio: 5.6
Hang glider weight: 24 kg
Minimum pilot weight: 50 kg
Maximum pilot weight: 75 kg
Packed length: 4 m
Number of battens: 10
Nose angle: 118°
All Aero 