Grosso Easy Eagle

TYPE: Tandem-seat ultralight biplane kitbuilt.

PROGRAMME: Construction began 1996; Easy Eagle first displayed at Oshkosh 1998. Two-seat Easy Eagle II introduced in 1999.

CURRENT VERSIONS: Easy Eagle: Single-seat version. Easy Eagle II: Two-seat version.

CUSTOMERS: Three Easy Eagles and one Easy Eagle II flying by mid-2003.

COSTS: Kit US$9,900 (Easy Eagle) or US$13,900 (Easy Eagle II) (2002).

DESIGN FEATURES: Classic open-cockpit, single-bay biplane with steel tube cabane and flying struts and steel landing wires. Modified Clark Y aerofoil. No aerofoil on tailplane. Quoted build time 300 to 500 hours for Easy Eagle and 500 to 700 hours for Easy Eagle II.

FLYING CONTROLS: Conventional and manual. Large ailerons on lower wings only.

STRUCTURE: Fabric-covered 4130 steel tube fuselage with metal-covered fuselage forward of cockpit and two-spar wooden wings with aluminium leading-edge.

LANDING GEAR: Tailwheel configuration, one-piece sprung aluminium mainwheel legs. Azusa wheels and cable brakes; tyres 5.00-5 on Easy Eagle and 6.00-6 Easy Eagle II. Solid tailwheel.

POWER PLANT: Easy Eagle: One 1,914 cc Volkswagen four-cylinder air-cooled motorcar engine; design accepts engines to 63.4 kW (85.0 hp). Wooden propeller. Fuel capacity 45.4 litres (12.0 US gallons; 10.0 Imp gallons).
Easy Eagle II: One 83.5 kW (112 hp) Textron Lycoming 0-235 flat-four. Fuel capacity 68.1 litres (18.0 US gallons; 15.0 Imp gallons).

DIMENSIONS, EXTERNAL:  
Wing span: Easy Eagle 5.49 m (18 ft 0 in)
Easy Eagle II 6.20 m (20 ft 4 in)
Length overall: Easy Eagle 4.37 m (14 ft 4 in)
Easy Eagle II 5.49 m (18 ft 0 in)
Height overall: Easy Eagle 1.78 m (5 ft 10 in)
Easy Eagle II 1.98 m (6 ft 6 in)
AREAS:  
Wings, gross: Easy Eagle 9.57 m2 (103.0 sq ft)
Easy Eagle II 13.01 m2 (140.0 sq ft)
WEIGHTS AND LOADINGS:  
Weight empty: Easy Eagle 193 kg (425 lb)
Easy Eagle II 328 kg (725 lb)
Max T-O weight: Easy Eagle 328 kg (725 lb)
Easy Eagle ll 521 kg (1,150 lb)
PERFORMANCE:  
Max operating speed: both 95 kt (177 km/h; 110 mph)
Normal cruising speed: both 78 kt (145 km/h; 90 mph)
Stalling speed: both 40 kt (73 km/h; 45 mph)
Max rate of climb at S/L: both 274 m (900 ft)/min
T-O run: Easy Eagle 92 m (300 ft)
Easy Eagle II 122 m (400 ft)
Landing run: both 92 m (300 ft)
Range with max fuel:  
Easy Eagle 260 n miles (482 km; 300 miles)
Easy Eagle II 173 n miles (321 km; 200 miles)
 

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