Du Pont

US, 1920 – 1932

(1) Du Pont Motors Inc, Wilmington, Del., 1920 – 1923

(2) Du Pont Motors Inc, Moore, Pa., 1923 – 1932

E. Paul du Pont’s company built quality cars in limited numbers, total production being 537 vehicles of all Du Pont types. First of the line was a Du Pont 4.1-litre sv four with their own engine, selling for $2.600, but this gave way to proprietary-engined sixes, initially powered by Herschell-Spillman. The 1925 Du Pont Model D had a 6-cylinder 5-litre Wisconsin engine with overhead valves that developed 75bhp, a constant-mesh gearbox, and Lockheed hydraulic brakes to all four wheels. Its successor, the Du Pont Model E, could be had with a supercharger, but the best-known, and best, Du Pont was the Du Pont Model G speedster introduced in 1928. With its narrow straight wings copied from the Amilcar, Woodlite headlamps and grille concealing the radiator, the last a pioneering feature, the Du Pont Model G was not a good-looking car, but it was a very effective one. Like all the DuPont speedsters it had four forward speeds. The 5.3-litre, sv straight-8 engine, by Continental, gave 114bhp at 3600rpm with catalogued modifications. With the latter, 100mph was guaranteed. In the 1929 Le Mans 24 Hours race the Du Pont Model G proved itself faster than the other American entries, Stutz and Chrysler. Touring bodywork was, of course, available on the Du Pont car, and in 1931 came the long wheelbase (12ft 2 in) Du Pont Model H, built in a Stearns Knight frame. The later Du Pont cars were assembled in the Indian motorcycle factory at Springfield, after E. Paul du Pont had acquired this concern.

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

Rolls-Royce

GB, 1904  to date

(1) Royce Ltd, Manchester, 1904 – 1906

(2) Rolls-Royce Ltd, Manchester, 1906 – 1908

(3) Rolls-Royce Ltd, Derby, 1908 – 1945

(4) Rolls-Royce Ltd, Crewe, Cheshire, 1946 – 1971

(5) Rolls-Royce Motors (1971) Ltd, Crewe, Cheshire, 1971 to date

The Rolls-Royce car was the result of a meeting between Henry Royce, a manufacturer of electric cranes in Manchester, and the Hon. C.S. Rolls, a pioneer motorist then selling Panhards in London, who wanted a quality car to boost falling sales. The first Rolls-Royce cars were based on the 1.8-litre (later enlarged to 2-litre) vertical-twin 10hp ioe Royce with shaft drive, but the range of Rolls-Royce cars was expanded to embrace a 3-litre, 3-cylinder, ‘light’ and ‘heavy’ versions of a 4-cylinder Rolls-Royce Twenty, and a 6-litre pair-cast six retailing at £900. A Light Twenty Rolls-Royce car with geared-up top, driven by Rolls, won the 1906 Tourist Trophy, and also broke the Monte Carlo-London record.

An abortive 3½-litre V8 petrol brougham Rolls-Royce car with square cylinder dimensions was shown in 1905, but 1906 was the start of a one-model policy based on the 40/50hp 6-cylinder Rolls-Royce car, later to win immortality as the Rolls-Royce Silver Ghost, which Rolls-Royce car made its début at Olympia that year. This Rolls-Royce car had a conventional 7-litre sv engine with pressure lubrication and dual ignition, as well as the 4-speed overdrive gearbox. Output of the Rolls-Royce Silver Ghost was a modest 48bhp, but the Rolls-Royce car’s reputation was assured after a successful 15.000 mile RAC-observed trial in 1907, from which the Rolls-Royce Silver Ghost emerged with flying colours. 6.173 Rolls-Royce Silver Ghost cars were made: the first ones at Manchester, and from 1908 on the Rolls-Royce cars were made at Derby. At £985 for a chassis the Rolls-Royce car was backed by a unique inspecition scheme, and in mid-1909 it was revised with a longer-stroke 7.4-litre engine and conventional 3-speed box. The Rolls-Royce Silver Ghosts reverted to 4 speeds in 1913, when cantilever rear suspension was adopted; later modifications were full electrics (1919) and Hispano-Suiza-type mechanical servo 4-wheel brakes (1924). The ‘Best Car in the World’ – a reputation which was well established by Rolls-Royce cars by 1914 – was not normally entered in competitions but in 1911 a Rolls-Royce Silver Ghost was successfully driven from London to Edingburgh and back on top gear for a fuel consumption of 24.32mpg, and a works team Rolls-Royce car swept the board in the 1913 Austrian Alpine Trials. Armoured-car versions of the Rolls-Royce Silver Ghost gave yeoman service both during and after World War 1.

Production of Rolls-Royce cars was resumed after the Amistice, the chassis price being inflated to £2.100. In 1920 an American Rolls-Royce car actory was opened, this making the Rolls-Royce car until 1931. Post-war 1 inflation led Rolls-Royce to abandon their one-model Rolls-Royce car policy in 1922 and to introduce a 3.1-litre ohv 6-cylinder Rolls-Royce Twenty with a 3-speed unit gearbox and central change at £1.100 for a chassis. This Rolls-Royce car was regarded by Rolls-Royce enthusiasts as heresy, but the Rolls-Royce Twenty was an excellent if sluggish car which last none of the traditional quality; nearly 3.000 Rolls-Royce cars were made up to 1929. In 1925 the Rolls-Royce car acquired a 4-speed box, right-hand change, and the servo 4-wheel brakes of the Rolls-Royce Silver Ghost, which was retired that year in favour of a 7.7-litre Rolls-Royce Phantom I with overhead valves and vertical radiator shutters. An improved Phantom II Rolls-Royce car with hypoid back axle and redesigned combustion chambers was listed from 1930, while the Rolls-Royce Twenty emerged as the more powerful Rolls-Royce 20/25 with a 3.7-litre engine. A Continental version of the bigger Rolls-Royce car gave a genuine 90mph with closed coachwork. Refinements of the early 1930s on Rolls-Royce cars included synchromesh (on the 20/25 in 1932, and on the Phantom a year later), and centralized chassis lubrication (1933).

In 1931 the Rolls-Royce car company bought Bentley Motors, after Napier had made an unsuccessful bid. The Bentley emerged two years later, as a Rolls-Royce-based 3½-litre: it was not to lose its identity until the 1950s. Sir Henry Royce died in 1933, and the entwined ‘R’s of the radiator emblem of the Rolls-Royce car was changed from red to black, supposedly in mourning. The smaller Rolls-Royce cars acquired hypoid final drive in 1936, in which year an alternative power unit of 4¼-litres’ capacity was offered, first as an option on the Rolls-Royce car, and then as standard: thus the 20/25 Rolls-Royce car grew up into the 25/30. In this year Rolls-Royce cars stopped making their own carburetors, though electrical equipment was not bought out until after World War 2. Aero-engine influence (the Rolls-Royce car company had been making these units since 1914 and had been responsible both for the Schneider Trophy R engine of 1931 and the Merlin of 1935) was reflected in the 12-cylinder Phantom III Rolls-Royce car first shown in 1935. The capacity of this Rolls-Royce car was 7.3-litres, and it was the first Rolls-Royce car to have independent front suspension. Later examples Rolls-Royce cars had overdrive gearboxes. It offered 90-95mph for £2.600 and up. This Rolls-Royce car model was still being made in 1939, along with a development of the 25/30, with independent front suspension, the Rolls-Royce Wraith, which Rolls-Royce car could be bought for around £1.600 complete.

Post-war 2 production Rolls-Royce cars was transferred from Derby to Crewe and the first new Rolls-Royce car model was the Rolls-Royce Silver Wraith, with a 4¼-litre engine, overhead inlet valves and hydraulic actuation for the front brakes, this Rolls-Royce car costing around £4.300 in 1947. The Rolls-Royce Phantom III was not revived, but sixteen ioe 5.7-litre straight-8 Phantom IV Rolls-Royce cars were made for heads of state from 1949 onwards. Among the customers of the Rolls-Royce car was HRH Pincess Elizabeth, who was to become the first reigning British monarch to use Rolls-Royce cars officially. The 6-cylinder Rolls-Royce cars continued up to 1959. 1949 brought the first Rolls-Royce car factory-bodied model, the export only Rolls-Royce Silver Dawn, using the standard Bentley saloon body, left-hand drive, and steering column change. In 1952 capacity of the Rolls-Royce car went up to 4.6-litres and a long-chassis version was listed with an 11ft 1in wheelbase. The General Motors Hydramatic transmission became an option in 1953, and the famous manual box with right-hand control was finally dropped two years later with the advent of a 4.9-litre Rolls-Royce Silver Cloud, a restyled saloon with 15in wheels, which Rolls-Royce car could be bought with power-assisted steering and full air-conditioning. 1960 Rolls-Royce cars were identical in outward appearance, but were powered by entirely new oversquare alloy 6.2-litre V8 engines. Power assisted steering was now standard on the Rolls-Royce car, though the hydro-mechanical servo brakes were retained. The standard saloon Rolls-Royce car cost £6.093, and a limousine version on a 12ft wheelbase, the Rolls-Royce Phantom V, was some £3.000 dearer. A four-headlamp layout was introduced on the Rolls-Royce car in 1963, and a year later Rolls-Royce cars started to supply a 4-litre version of their ioe 6-cylinder engine to BMC for installation in the Vanden Plas Princess.

At the 1965 Shows Rolls-Royce cars introduced an entirely up-to-date design, the Rolls-Royce Silver Shadow. This Rolls-Royce car boasted unitary construction, self-levelling, all-round independent suspension, and servo-assisted disc-brakes with three separate circuits. It retained the 1960 V8 engine, also the (now dummy) traditional radiator. The Phantom V Rolls-Royce car with its separate chassis was kept on, a ceremonial limousine for head of state being listed at £10.695. A Silver Shadow convertible was available in 1968 for £10.449; 1969 brought both a long-wheelbase version of the Rolls-Royce car model and the enlargement of the engine to 6.745cc. In 1970 a new 3-speed automatic gearbox (already used on left hand drive export models since late 1965) replaced the earlier 4-speed type on the Rolls-Royce car, and the Phantom VI replaced the Phantom V; production of these state Rolls-Royce carriages ran at about 50 Rolls-Royce cars a year. Similar modifications were applied to the parallel Bentley cars. The sensational bankruptcy of February 1971 found the Rolls-Royce Car Division still profitable; indeed, within a month the Rolls-Royce car company had announced their high-performance Rolls-Royce Corniche 2-door saloon and convertible with coachwork by H.J. Mulliner-Park Ward, at prices from £12.829 upward, and that December the 10.000th Silver Shadow Rolls-Royce car left Crewe. By late 1972 prices of the more expensive Rolls-Royce cars had risen to £14.399 for the Rolls-Royce Corniche and £15.559 for the Rolls-Royce Phantom Limousine.

US, 1921 – 1931

Rolls-Royce of America Inc, Springfield, Mass.

The American Rolls-Royce car company was formed in November 1919 to build the famous British Rolls-Royce cars in an American factory and so avoid high import duties. The Rolls-Royce car plant was bought from the American Wire Wheel Co, and the Rolls-Royce Silver Ghost went into production there in 1921. This Rolls-Royce car had a 6-cylinder 7.4-litre sv engine developing 80bhp, and came in two wheelbases, 12ft and 12ft 6½in. Right-hand drive was used until 1923. Unlike the British Rolls-Royce car company, Rolls-Royce of America always advertised coachwork and supplied complete Rolls-Royce  cars if customers wished. Most bodies of the American Rolls-Royce cars were by Brewster, and in 1926 this firm was taken over by Rolls-Royce car company. In 1926 came the New Phantom, or Rolls-Royce Phantom I as it was later called. This Rolls-Royce car had a 6-cylinder 7.7-litre engine with overhead valves, and again came in two wheelbases, 11ft 11½in and 12ft 2½in. The Depression badly hit sales of the American Rolls-Royce car, and production of Rolls-Royce cars at Springfield came to an end in 1931, although a few British Rolls-Royce cars were assembled there later. A total of 2.944 American Rolls-Royce cars was made, of which 1.703 were Rolls-Royce Silver Ghosts and 1.241 were Rolls-Royce Phantom Is.

Source: Georgano, encyclopedia of motorcar; MCS, GNG

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