built in 1937 by Quinto Beltrame. 1938 edition of Jane's states plywood monocoque, 18 hp opposed-piston single cylinder air cooled two-stroke Beltrame engine, three drive belts to prop. 6.06 m span, 3.55 m long, 1 m high. 4.5 sq m. wing. empty 70 kg, loaded 160 kg. 60 km/h mimimum speed, 140 km/h cruise, 160 km/h max. Take off run 125 m, landing 50 m. range 500 km. elevator is sole. Elevator is only controllable surface: +12.5 degrees, - 2.5 degrees, 30 degrees lateral tilt each side. I seem to recall reading 50+ years ago that engine was a deisel.

The Beltrame Colibrì was nicknamed "the sky motorcycle" and was built (but not flown) by a North Italian iron and steel foundry company located in Vicenza.