Walter Owen Bentley, commonly known as 'WO', worked as an apprentice at the Great Northern Railway where he designed airplane engines. The first Bentley automobile was created in London just after the end of World War I, and given a three-liter four-cylinder engine that produced 65 horsepower. It was designed by the company's founder, Walter Owen, and benefited from his technical abilities and skill. This car was the first to carry the flying 'B' insignia and the hallmark radiator casing. An example was shown at the 1919 London Motor Show, though it was void of an engine that was not ready in time.
The 3-liter Bentley would remain in production until 1929 with a total of 1622 examples being produced in various configurations. A total of 513 examples of the Speed Model were created during this time. The 3-Litre Bentley was the car that would give the Bentley Company its fame. The car would emerge victorious at the 1924 24 Hours of LeMans race, which is a true testament to the car's abilities, stamina, technology, ingenuity, and speed. The Bentley's would win LeMans again in 1927, 1928, 1929, and 1930. They competed at various other important races, such as the Tourist Trophy and Brookland's Double 12, where the cars proved they were the fastest.
Under the bonnet was the powerplant, which was a technical marvel and advanced for its time, featuring aluminum pistons, twin spark ignition, and an overhead camshaft that operated four-valves per cylinder. The cylinder block and head were cast as a single piece which prevents leakage from the gaskets. The dry-sump lubrication allowed for increased oil capacity, lower center of gravity for the engine, and reduced energy/power loss.
Various coachbuilders were tasked with creating the bodies; Vanden Plas was one of the popular favorites, as was the LeMans type Bodystyle which closely mimicked the body style of the LeMans racer. During that era, the cars that raced at LeMans were often given bodies of road-going Tourers, at the request of the organizers of the event. The Bentley's that raced at LeMans were given lightweight bodies, 25-gallon fuel tanks, and a re-worked suspension that included double hydraulic shock absorbers in the front with improved front axle beams. To help while driving at night, some cars were given a central Marchal headlight.
A six-cylinder engine soon followed, appearing in 1925, and provided additional power to carry the large and elegant coachwork bodies. It displaced nearly 6.6-liters and was given all the technology and mechanical ingenuity of the 3-liter units. In 1928 a high-performance version was introduced, dubbed the 6.5-Liter Speed Model, also known as the Speed Six. In the capable hands of the 'Bentley Boys', the works drivers spearheaded by Woolf Barnato captured many important victories for the company. Their first major success came in 1928 at LeMans where Barnato and Rubin drove a 4.5-Liter Bentley to victory. The Speed Six would dominate LeMans again in 1929 and 1930 with Barnato as their driver. The success of the Speed Six was due to its reliability and 200 horsepower engine.
Bentley was unable to compete in 1931 at LeMans due to financial difficulties. The company would soon be acquired by Rolls Royce which spelled an end for the racing program. By Daniel Vaughan | Sep 2007
Even from the very early days of the automobile the value of racing as a component for innovative advancement and refinement was absolutely priceless. Racing inspires chance-taking and the search for any possible advantage. This pursuit would launch ....[continue reading]
This is the 19th Bentley 3 Litre built. The finished chassis (number 19, with engine 20) was delivered to a little-known coachbuilder, J. Gairn & Company of Edinburgh, Scotland, who created this touring body for its first owner, also from Edinburgh, ....[continue reading]
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