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Electra Flyer Cirrus
 
Electra-Cirrus
 
A high speed performance glder, the Cirrus features diffused leading edges, ram air injected tapered leading edge pockets which create an airfoil, and full batten sails. It has a quick response. Broad speed range, stability at low speeds, and mild stall characteristics. It was designed for the Hang III pilot.
 
The Cirrus can be converted for towing. No tools are requires for set-up or take-down.
 
The airframe is made of 6061-T6 1.5in x .049 clear anodised aluminium throughout. Tubing ends are capped with solid aluminium plugs to prevent crushing. Rigging is 3/32in 7x7 stainless steel vinyl coated nico swedged. Out rigger cables are 1/16in 1x19 stainless steel. A cam operated quick release system for kingpost wires is fitted.
 
All nuts and bolts are aircraft quality and all parts are gold and black anodised. The pilot support is a “Backsaver” prone harness.
 
The sail is 3.8oz stabilised dacron in a choice of 11 colours, fitted with aluminium and plastic ribs.
 

It was one of the first gliders with battens. They were made of flexible plastic strips, and kept the sail from flapping.

 

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Cirrus 3

 

The 1976 Electra Flyers Cirrus 3 was very tough in turn, with considerable roll-over loss. The 3 deflexors settings were very important to give the correct contour in flight. But if the wing landed on the ground they bent or often broke.

 

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Cirrus 5B

 

The Cirrus 5 was introduced in 1977 in four sizes, with the C5A being the largest and the C5D being the smallest. The C5B had a keel pocket and six flexible battens per side. Although designed for the novice pilot, it was quite tail-heavy and inclined to tip-stall during low-speed turns. Its handling and sink rate did not approach that of the Olympus, but it had better penetration at speed. Manufacture was discontinued in 1981.

 

Cirrus 2
Leading edge: 20 ft
Keel length: 13 ft
Wing span: 31 ft / 9.15 m
Wing area: 195 sq,ft / 17.9 sq.m
Aspect ratio: 5.63
Nose angle: 98˚
Sail billow: 1.25˚
Weight: 42 lb / 19 kg
Pilot weight: 180-225 lb / 80-100 kg
Takeoff speed: 10 mph
Stall speed: 10 mph / 10 kph
Max speed: 47 mph
Best glide ratio (L/D): 8:1
Best L/D speed: 25 mph
Min sink: 250 fpm
Number of battens: 12
Packed length: 5.8 m
 
Cirrus 3
Leading edge: 19 ft
Keel length: 13 ft
Wing span: 28 ft / 8.54 m
Wing area: 180 sq,ft / 16.5 sq.m
Aspect ratio: 4.35
Nose angle: 91˚
Sail billow: 1.25˚
Weight: 39 lb / 18 kg
Pilot weight: 135-190 lb / 60-85 kg
Takeoff speed: 10 mph
Stall speed: 10 mph / 16 kph
Max speed: 50 mph
Best glide ratio (L/D): 8:1
Best L/D speed: 26 mph
Min sink: 250 fpm
Packed length: 5.8 m
Number of battens: 12
 
Cirrus 4
Leading edge: 20 ft
Keel length: 9 ft
Wing span: 31 ft
Wing area: 120 sq,ft
Nose angle: 98˚
Sail billow: 1˚
Weight: 40 lb
Pilot weight: 150-190 lb
Takeoff speed: 10 mph
Stall speed: 10 mph
Max speed: 47 mph
Best glide ratio (L/D): 8.5:1
Best L/D speed: 25 mph
Min sink: 235 fpm
 
Cirrus mini
Wing area: 14.77 m²
Wing span: 8.1 m
Aspect ratio: 4.61
Hang glider weight: 17 kg
Minimum pilot weight: 40 kg
Maximum pilot weight: 60 kg
Minimum speed: 16 km/h
Max glide ratio (L/H): 8
Packed length: 5.6 m
Number of battens: 12
Nose angle: 91°

 

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