The 1975 Cobra is a second generation glider and although without deflexers the design incorporates truncated tips and battens. The Cobra is reported to be a pleasant and docile kite which has a considerably superior performance to a standard Rogallo. A further size was later offered. Produced in two sizes.

The Cobra was priced at £300.00 inc VAT and tuition. The 17 ft leading edge model for lighter pilots cost £290.00 inc VAT and tuition.

Sail area: 222 sq ft
Pilot weight: 11 st and above
Leading edges: 19 ft
Keel: 17 ft

The 1974 Argus was a new design based on two years of experience with the Arion. It incorporated many changes, in particular to the sail which had a revised profile. The Argus was made in two sizes the 230 sq ft model was suitable for pilots of 10 stone.

During 1974 McBroom recommended that kingposts should be fitted to all Rogallos. Therefore the Argus would perhaps be the first British production glider to be kingposted.

The top rigged 1974 Argus was available in kit form for £140.00 plus VAT, it with drilled tubes for £155.00 plus VAT, and also supplied ready to fly.

In 1975 the Argus was offered with a new large A frame suitable for prone flying. Fittings being black anodised.

A two-seater Rogallo balloon drop was made by Geoff McBroom and Norman Millhouse on a Twin Argus.

Prices for the 1975 Argus including VAT and tuition were: 17 ft (10 st. or less) £250.00. 18 ft (10-15 st) £262.50. 19ft (12 st. or more) £287.50. 20 ft 6 in (two seater) £325.00. Kits and plans were also available.

1974 Argus
Sail area: 235 sq ft
Leading edges: 18 ft

1975 Argus
17 ft
10 st. or less

1975 Argus
18 ft
10-15 st

1975 Argus
19ft
12 st. or more

1975 Argus
20 ft 6 in
two seater

The first British hang glider of modern times was created by a group of six flying enthusiasts in mid 1971. They were; Geoff McBroom, Les Hockings, Steve Stanwick, Howard Holdie, Tony Gillette and Don Cameron.

The first flight was made by Les Hockings at Camlong Down near Dursley. The glide angle was about 3:1 rather than the expected 5:1, however the machine was reported to be easy to fly.

Wing span: 7.92 m / 26 ft
Leading edge: 20 ft
Sail area: 280 sq ft
Max glide ratio (L/H): 3
Minimum sink rate: 1.8 m/s / 6 ft/sec at 20 mph
Take off speed: 15 mph

During early 1973 McBroom revised the dimensions of his glider based on 17ft boom lengths. This became the Arion for which he produced two instruction manuals, one to build the machine and one on how to fly it.

Wing span: 6.7 m / 22 ft
Wing boom length: 16ft 9in
Max glide ratio (L/H): 5
Minimum sink rate: 2.3 mps / 7.5 fps at 25 mph
Nose angle: 80°
Take-off speed: 15 mph approx
Recommended speed range: 15-35 mph
Weight 18swg version: 37 lbs
Weight 16swg version: 44 lbs

McBroom claims that the 1977 Lynx 18 is a delightfully pleasant glider to fly, with an incredibly low sink rate. Although a 7:1 glide angle is claimed the machine frequently outglides and outsoars kites claiming 8:1.

The Lynx 18 was priced at £405.00 inc VAT.