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Sunbeam motorcycle engine, 1948.

Sunbeam motorcycle engine, 1948.
3 4 c m
40cm
actual image size: 32cm x 26cm

Description

This was the engine for the Sunbeam S7 motorcycle designed by Erling Poppe and first produced in 1947. It has two cylinders in-line and the cylinder block and crankcase in one piece. The casing of the four-speed gearbox is bolted to the engine crankcase. There is a single-plate clutch, shaft drive to the rear axle, overhead camshaft and coil ignition.

Image Details

Image Ref.
 
10306788

© Science Museum / Science & Society Picture Library

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