Moto Guzzi - Airone & Airone Sport
 Back to brands list

Moto Guzzi D2-492-26-18
Photo ou archives : F-M. Dumas

Capacity : 250
Model : Airone & Airone Sport
Production : 1939 - 1957
Category : (R) Street Bike


250 Airone Sport -1952

Italy's mid-range bestseller

Over the period from 1939-1947, the Airone was Italy's most popular mid-range motorcycle. Actually, its career had really started earlier. Its four-speed gearbox and its name - which is Italian for "Heron" - developed from the P/PE series launched in 1932. Ornithology guided Moto Guzzi between 1938 and 1960, a period during which the company called all its new models after birds: "Alee" ("eagle"), "Albatros," "Galetto" ("rooster"), "Falcone" ("falcon"), "Cardellino" ("goldfinch").

Highly Evolved Frame

Like the other Guzzi models, the Airone had a unit-constructed horizontal single-cylinder ohv engine, mounted in a highly evolved frame with front and rear suspension. Of composite pressed-steel/tubular construction, the frame at first had tubular girder forks. They were later made of pressed-steel and finally replaced by hydraulically damped telescopic forks of a type unique to Guzzi - the tubes ran in roller guides.

Detail Improvements

The rear suspension was compact and efficient: the triangular swing arm was pivoted at its apex and pulled against two horizontal springs mounted beneath the engine. Above the fork were friction shock absorbers operated by radius arms. There were only slight changes after 1948, when the first Sport variants made their appearance and an aluminum cylinder and head assembly was introduced.


Engine: 247cc (70x64mm) air-cooled horizontal single-cylinder four-stroke

Power Rating: 12 hp @ 5200 rpm

Valves: overhead-camshaft; hairpin valve springs

Fuel System: 22mm carburetor

Transmission: 4-speecl, chain final drive

Suspension: telescopic forks (front); swing arm with two horizontal dampers (rear)

Brakes: drum (front & rear)

Wheels: 19 inch (front & rear)

Weight: 313 lb

Maximum Speed: 84 mph


This 1952 Airone Sport clearly shows the external "Bacon Slicer" inertia.flywheel characteristic of the horizontal single Moto Guzzi engine.

Motorcycle encyclopedia Moto Passion, realised by François-Marie Dumas, include almost 2000 photos presented with an exhaustive history of the motorcycles exhibited.

This unique collection has been realised with the participation of many specialists. With many thanks in particular to Yves Campion, Michael Dregni, Didier Ganneau, Jean Goyard, Helmut Krackowizer, Michel Montange, Christian Rey, Bernard Salvat, Mick Woollett, etc

One can order here

  • Original cards on paper (in french)
  • High resolution scans or original documents presented and signed with my name.

Please contact me at for conditions and copyright.

© Tous droits réservés
François-Marie Dumas

Accueil - Motos NOUGIER - Motos insolites - Motos japonaises - Unusual Motorcycles - Scooters du Monde - Motos Passion - Motos GILLET - Liens - Contact

Moto Collection - François-Marie Dumas

Valid XHTML 1.0 Transitional CSS Valide !

Mentions légales