Ellipse Twist

Design and development

The Twist was designed as a beginner hang glider and is built in three sizes.

Typical of the series, the Twist 15 is made from aluminum tubing, with the wing covered in Dacron sailcloth. Its 9.2 m (30.2 ft) span wing, uses a single tube-style kingpost and upper flying wires. The nose angle is 120° and the aspect ratio is 6.5:1. The model number indicates the approximate wing area in square metres.

Variants

Twist 13

Small sized model with a wing area of 13 m² (140 sq ft), wing span of 9.2 m (30.2 ft), aspect ratio of 6.5:1 and a pilot hook-in weight range of 40 to 60 kg (88 to 132 lb).

Twist 15

Medium sized model with a wing area of 15.5 m² (167 sq ft), wing span of 9.2 m (30.2 ft), aspect ratio of 6.5:1 and a pilot hook-in weight range of 55 to 75 kg (121 to 165 lb).

Twist 16

Medium sized model with a wing area of 16.5 m² (178 sq ft), wing span of 9.2 m (30.2 ft), aspect ratio of 6.2:1 and a pilot hook-in weight range of 70 to 100 kg (154 to 220 lb).

Specifications (Twist 15)

Data from Bertrand

General characteristics

Crew: one

Wingspan: 9.2 m (30 ft 2 in)

Wing area: 15.5 m² (167 sq ft)

Aspect ratio: 6.5:1