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Benelli 500 VL



The 500 VL engine (VL stands for side valves) was developed in 1940 for the Benelli 500 VLC motorcycle. Its production, initially conceived for the civilian market, was quickly and primarily focused for military purpose by means of the development of the model 500 VLM (military side valves), equipped with the same engine, considered more reliable than the sportier overhead valve type.

Technical specifications

ManufacturerBenelli, Pesaro, Italy, 1940
Type500 VL
Descriptionsingle-cylinder engine, cast iron cylinder block, head and crankcase made of aluminium alloy
Stroke87 mm
Bore85 mm
Displacement493 cm³
Compression ratio4.1
Power12 hp at 4750 rpm
Valvetrain system2 side valves, controlled by a two cams housed in the crankcase, driven by a pair of gears
Fuel feeding systemwith a single-barrel gasoline carburetor Dell'Orto MC 26 F
Ignition systemwith a spark plug fed by a magneto distributor
Cooling systemair-fed
Lubrication systemforced with gear pump


Benelli 500 VLC (civilian market) and 500 VLM (for military applications)

Testi e immagini di Giuseppe Genchi
Sito realizzato da Pasquale Pillitteri