Bentley

GB, 1920 to date

(1) Bentley Motors Ltd, Cricklewood, London N.W.2., 1920 – 1931

(2) Bentley Motors (1931) Ltd, Derby, 1933 – 1945

(3) Bentley Motors (1931 Ltd, Crewe, Cheshire, 1946 to date

W.O. Bentley was already well-known as the importer of the D.F.P. car, a pioneer of aluminium pistons and a designer of successful rotary aircraft engines when his first Bentley 3-litre car for sale appeared at the 1919 London Show. This Bentley model, indelibly imprinted in the layman’s mind as the archetype of the Vintage sports car, had a long-stroke (80x149mm) single ohc engine with fixed head and dual magneto ignition developing about 70bhp in its early form. The Bentley 3-litre was at its best in long-distance events; a team of Bentley 3-litres with flat radiators (the only instance of this apart from the same year’s Indianapolis car) finished 2nd, 3rd, and 5th in the 1922 T.T., and the model accounted for the first two of the marque’s Le Mans wins, those of Duff/ Clement in 1924 and Davis/ Benjafield in 1927 on the badly damaged ‘Bentley Old No. 7’ – one of the legends of motor-racin history. Up to 1929 1.630 3-litres Bentley motorcars were made. 1924 saw the introduction of front wheel brakes and also the famous sports four-seater ‘Bentley Speed Model’ by Vanden Plas. Bentley cars are popularly known by the colours of the enamel on their radiator badges – ‘Bentley Red Label’ signifying a Speed Model short-chassis 3-litre, ‘Bentley Blue Label’ the early short, and long chassis which could and sometimes did carry limousine coachwork, and ‘Bentley Green Label’, a special 100mph Bentley type made  in very small numbers.

In 1926 the Bentley company made a bid for the carriage trade with a big Bentley 6½-ltre six for sale on similar lines. A chassis cost £1.450, but the Bentley image made no impression in this market. However, the model was developed into the 180bhp ‘Bentley Speed 6’ of 1929, considered by many to be the best of the old-school Bentleys for sale, and responsible for the firm’s last two Le Mans wins – Barnato/ Clement in 1929, and Barnato/Kidston in 1930. In 1927 the Bentley 3-litre was developed into the Bentley 4½-litre, still with four cylinder, but with a 100bhp engine which was giving 130bhp by the time production ended. This admirable car could exceed 90mph in standard form, and was used by Barnato and Rubin to win LeMans in 1928. A supercharged version was listed in 1930; it had 182bhp, and did not have the approval of Bentley himself, but it was an excellent if thirsty road car, and won Sir Henry Birkin an unexpected 2nd place in the formule libre French G.P. of 1930. Bentley finances were always shaky, and even Woolf Barnato’s aid of 1927 did not last long; the Bentley company went down in the early summer of 1931 to the accompaniment of a splendid gesture – a 220bhp ohc Bentley 8-litre six, made in two wheelbase lengths, 12ft and 13ft. Only 100 of these eight-litres Bentleys were made, plus 50 examples of a rather uninspired inlet over exhaust valve 4-litre car.

Napier made an unsuccessful bid for the assets of the Bentley company, but were beaten by Rolls-Royce, who introduced their version of the Bentley at Olympia in 1933. This was an entirely different type, based on Derby’s contemporary 3.7-litre ohv push-rod ’20-25’. It had a 4-speed synchromesh gearbox, Rolls-Royce servo brakes, and sold for £1.460 with saloon bodywork. In this form, it could reach 90mph and merited its slogan ‘The Silent Sports Car’. It was not raced, of course, apart from E.R. Hall’s three consecutive second places in the T.T. (1934, 1935 and 1936). By 1936 it had grown into a Bentley 4¼-litre, the increase of capacity being necessitated by the rising weight of bespoke coachwork. An overdrive gearbox was standardized in 1939, and the 1940 Bentley Mk V had independent front suspension, though only a handful were made because of the war. The Derby Bentley car’s swansong was a creditable 6th place by H.S.F. Hay at Le Mans in 1949, on a ten-year-old machine with 60.000 road miles behind it. Cylinder capacity was unchanged at 4.257cc in 1946, but independent front suspension, was standard, and Bentely, like Rolls-Royce, had gone over to inlet over exhaust valves. Prices for the Bentley motorcars for sale rose from £2.997 to £4.474 in 1951 for the standard steel saloon, the first Rolls-Royce product to have a regular series-produced factory body.

Thereafter the Rolls-Royce and Bentley identities merges, though in 1952 there was a special ‘Bentley Continental’ version of the latter with fastback 2-door saloon body by H.J. Mulliner which gave 120mph on a 3.077:1 top gear. Capacity went up to 4.6 litres in 1952 and 4.9 litres in 1955. Automatic transmissions, already optional, became standard that year; power-assisted steering and air conditioning followed In 1957, and for 1960 the old six at long last gave way to a 6.2-litre V8 with full overhead valves, by which time only the radiator style distinguished one make from the other. The ‘Bentley Continental’ with separate chassis was discontinued at the end of 1966; 1972 Bentleys were the 6.745cc Bentley T saloon and the Bentley Corniche 2-door saloon and convertible. Even the price differential between the two sister makes was now a thing of the past, the Bentley T-series selling for the same £10.455 as the Rolls-Royce Silver Shadow.

Source: Georgano, encyclopedia of motorcar; MCS

The information is written with the greatest of care. However, if you have any suggested amendments please contact us at office@prewarcar.com

Duesenberg

US, 1920 – 1937, 1966

(1) Duesenberg Motor Co, Indianapolis, Ind., 1920 – 1937

(2) Duesenberg Corporation, Indianapolis, Ind., 1966

Fred Duesenberg began by making bicycles and designed his first Duesenberg car, the Mason, in 1904. He and his brother August made engines with horizontal overhead valves for the 1912 Mason racing cars, and founded Duesenberg Motors in the following year in order to produce marine engines and complete racing cars bearing the Duesenberg name. The most famous of the latter appeared in 1920: a 3-litre Bugatti-inspired Duesenberg straight-8 with single overhead camshaft and three (vertical) valves per cylinder. This Duesenberg won the 1921 French Grand Grand Prix. In the 1920s the Duesenberg racing cars were the great rivals of the Millers at Indianapolis, and victory was assured in 1924 by the adoption of a centrifugal blower on Duesenberg cars. Though a two-stroke 1½-litre 8-cylinder racing engine capable of 7.000rpm was made in 1926, this was not proceeded with. The horizontal-valve Duesenberg engine was taken over in 1920 by the Rochester Motor Manufacturing Co Inc and was used in various sporting and luxury cars.

Meanwhile, at the end of 1920, the first Duesenberg production car made its debut. This Duesenberg Model A was an extremely expensive, if very advanced, luxury car, embodying an 8-cylinder in-line engine – the first to be seen in an American production car – of 4.2 litres, basically similar to the Duesenberg racing unit, but with only two valves per cylinder and developing about 100bhp. There were also hydraulically-operated front wheel brakes – another ‘first’ as far as America was concerned. The Model A was current until 1926. A handful of its little-altered successor, the Duesenberg Model X, was made in 1926-1927, but in the former year E.L. Cord of Auburn acquired control of the Duesenberg company. He stipulated that Fred Duesenberg’s next car should be completely new, and a quite exceptional machine. In fact, the Duesenberg Model J, which made its bow at the end of 1928, was the most remarkable automobile in America: bigger, faster, more elaborate and more expensive than any other, yet also superior to them in refinement and good looks. Its 6.9-litre, 8-cylinder engine, made by Lycoming (a firm which Cord had also bought), had two chain-driven overhead camshafts operating four valves per cylinder; a layout of racing type unique among American cars at the time and said to develop 265bhp at 4250rpm – more than double the output of any rival. Although the complete Duesenberg car weighed more than 4980lb, it was claimed to be capable of 116mph in top gear and 89mph in second. Only Duesenberg Model J chassis were made for which $8500 was asked in 1929. Immensely long and strong and lowbuilt, Duesenberg cars were very popular with all the leading coachbuilders. The Duesenberg company preferred to sell cars complete with bodies designed by them but made by approved builders, such as Murphy, Bohman & Schwarts, Judkins, Derham and Le Baron. In this form, catalogued Duesenberg models cost up to $17.950. The transmission – apart form the double dry-plate clutch – was conventional, as was the suspension by half-elliptic springs and hydraulic shock absorbers. The brakes, of course, were hydraulic, with vacuum servo assistance from late 1929.

In 1932 a supercharged version of the Model J, the Duesenberg SJ, was added. To cope with the 320bhp now alleged to be available, bearings, reciprocating parts and valve springs were strengthened. Usually, the shortest Duesenberg J chassis was used, with the highest axle ratio and stronger front springs. A maximum speed of 129mph was attributed to the Duesenberg SJ, with an acceleration figure of 0-100mph in 17 seconds.

Duesenberg survived the Depression, but died in the collapse of the Cord Corporation in 1937. Attempts to revive the Duesenberg name were made in 1947 and in 1966. The first Duesenberg was unsuccessful, and in 1966 only one Duesenberg car was actually made, powered by a 7-litre V8 Chrysler engine with push-rod overhead valves, developing 431bhp at 5.000rpm. Transmission was automatic, front suspension was independent, and there were disc brakes. Body styling was by Ghia. This Duesenberg venture, too, collapsed.

Source: Georgano, encyclopedia of motorcar; TRN 

The information is written with the greatest of care. However, if you have any suggested amendments please contact us at office@prewarcar.com