The Libellula II used a higher powered 105hp Walter Minor 4-III engine and had an enclosed cockpit. This aircraft, I-MANZ, gained an RAI type certificate on October 15, 1962, but no manufacture was undertaken.
Libellula II
Engine: Walter Minor III, 78kW
Main rotor diameter: 9.0m
Fuselage length: 4.75m
Height: 3.30m
Max take-off weight: 650kg
Empty weight: 500kg
Max speed: 109km/h
Hovering ceiling: 1250m
Range: 200km
All Aero 