The glider was designed by Reg Todhunter, Stephen Marton, Milton Talas and Al Backstrom and it was built by Glidair Sailplanes at Bankstown in 1958. In 1967 it became the first fully approved tail-less sail plane to fly in Australia.

The 'Twin Plank' glider was successfully test flown by Reginald Todhunter on May 31 and June 1, 1958 at Bankstown.

Glider, tail-less flying wing, 'Twin Plank' VH-GST, and engineering drawings (63), wood / fabric / paper, made by Reginald Todhunter, Australia, 1958

'Twin Plank' glider and a collection of drawings and prints for its construction.

Tail-less, high-winged aircraft glider comprising an oval-shaped body and a rounded nose. The glider is made of wood and canvas with a perspex covered cockpit area on the roof and sides, which is hinged from the centre and can open upwards. The glider features cream painted wings with a red painted stripe at either end, a cream painted rear body and red painted nose. Underneath the body of the glider is a single landing wheel and on the top exterior is a metal reinforcement bar. The interior of the cockpit is blue painted metal with double seating, two fabric harnesses, controls and dashboard.

Specifications:
Empty weight: 430lb (195 kg)
Wingspan: 35' 6" (10.8m)
Chord (width of wing): 5' (1.5m)
Fuselage length: 10' 9" (3.2m)
Glider ratio: 18:1
Sink rate: 3' 6"/sec (1m/sec)

Designed: Todhunter, Reginald; Australia

Made: Todhunter, Reginald; Bankstown, New South Wales; 1958

Designed: Marton, Stephen; Australia

Designed: Talas, Milton; Australia

Designed: Backstrom, Al; Australia

Made: Glidair Sailplanes; Bankstown, New South Wales; 1958


Used: Todhunter, Reginald; Bankstown, New South Wales; 1958

See parts

B2422