Classic Motorcycle Classic Motorcycle

Sunbeam S8 1952 500cc 2 cyl ohc


Sunbeam S8 1952 500cc 2 cyl ohc

Manufacturer: Sunbeam

Model: S8

Year: 1952
Displacement: 487 cc
Cylinder: 2 - Parallel twin
Engine type: 4-stroke / ohc
Bore / Stroke: 70 x 63.5 mm
Power: 25hp @ 6000 rpm
Compression Ratio: 1 : 6.5
Weight: 187 kg
Top Speed: 121 km/h
Production years: 1949 - 1956
Units: 8.530

Frame number: S8-5975
Engine number: S7-2007

The Sunbeam inline twin was introduced in 1947. A luxury tourer inspired by the pre-war BMW, it was of advanced specification with overhead-camshaft engine, shaft drive, plunger rear suspension, and balloon tyres. A deliberately more conventional, and also lighter and cheaper, S8 version was introduced in 1949. The S8's front fork and 7" brake were now standard BSA components, and there were numerous other changes made in the interests of rationalisation. Never as popular as BSA's more performance orientated models, the gentlemanly S7 and S8 remained in production until 1957.

This bike has been restored form ground up. The clutch needs some work. It turns over but it is not able to can transmit power over the clutch. We believe the main screw of clutch to the crankshaft is not tighten. According to the old invoices the clutch has been replaced in 2011 to a new one. It comes with manuals, old invoices and old sales brochures.