Bentley touring car, 1924.
© Science Museum / Science & Society Picture Library
This 3 litre 'Red Label' car, designed by the founder of Bentley Motors Ltd, Walter Owen Bentley (1888-1971), is similar in concept to the series of Bentley cars built at Cricklewood, London, from 1921 to 1930. A four-cylinder engine is fitted, each cylinder having a bore of 80mm, and a stroke of 140mm, with a capacity of 2996cc, which develops 90 bhp at 3500 rpm. Each cylinder has two overhead inlets and two overhead exhaust valves operated by a single overhead camshaft. Bentley cars set numerous speed and endurance records, and competed succesfully at racing events world-wide. Bentley became linked with the famous 24 hour race at Le Mans, France, where they had achieved five victories between 1924 and 1930.