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British Seagull Silver Century
1976



68

Description

The Silver Century engine, introduced in the mid-1960s, belongs to the numerous models of two-stroke marine engines manufactured by the British Seagull since the 1930s. Thanks to its simple arrangement as well as its great reliability, these engines have been widely used for decades in various types of pleasure boats.

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Technical specifications

ManufacturerBritish Seagull Co., Poole (Dorset), United Kingdom, 1976
TypeSilver Century
Description2-stroke single-cylinder engine, cast iron cylinder, head and crankcase made of aluminum alloy
Stroke40 mm
Bore57 mm
Displacement102 cm³
Max. power output4.5 hp at 4500 rpm
Specific power output44.1 hp/litre
Induction systemcrankcase scavenged system with loop scavenging, with inlet and exhaust ports formed in the cylinder
Fuel feeding systempetrol-fed, with single-barrel carburettor
Ignition systemsingle spark plug supplied by a high-tension magneto
Cooling systemliquid-fed, forced by a centrifugal pump
Lubrication systempetrol–oil mixture (1:10 by volume)
Starting systemManual recoil starting by rope wound around the flywheel
Mass17 kg (dry)
Power-to-mass ratio3.78 kg/hp
Propeller transmission ratio12/48 through a reduction drive with a pair of bevel gears


Application

Small recreational boats.

 

Kind donation of Mr. Giosuè Lo Piccolo.

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Testi e immagini di Giuseppe Genchi
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