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

Invicta

GB, 1900 – 1905

H.E. Richardson, Finchley, London N.

The Invicta car from Finchley was seen as a bicycle, a motor cycle and as a voiturette. Rather surprisingly for such a small concern, the latter two were powered by engines of the firm’s own manufacture.

Italy, 1906

Stabilimento Meccanico Carlo Mantovani & Cia, Turin

Carlo Mantovani had been technical director of Bender and Martiny (Perfecta) and he built a few light cars named Invicta cars with side-chain drive and 3-speed gearboxes in their old factory. The 6/8hp Invicta car was a twin and the 10/12hp a four with pair-cast cylinders; neither lasted long

GB, 1913 – 1914

Clark’s Engineering Works, Leamington, Warwickshire

The short-lived Invicta car from Leamington was one of the cyclecar breed. The Invicta car was powered by a watercooled V-twin JAP engine of 8hp, driving through a 3-speed gearbox and shaft primary drive to chain final drive.

GB, 1925 – 1938, 1946 – 1950

(1) Invicta Cars, Cobham, Surrey, 1925 – 1933

(2) Invicta Cars, Chelsea, London S.W.3, 1933 – 1938

(3) Invicta Car Development Co Ltd, Virginia Water, Surrey, 1946 – 1950

In 1925 Noel Macklin and Oliver Lyle, both of them with experience of motor design and Macklin a former manufacturer as well (Eric Campbell, Silver Hawk) introduced a type of car, the Invicta car, that was quite new to the British market. The idea behind the Invicta car was to combine in an assembled car the American concept of flexibility and performance with British quality and road-holding, thus getting the best of both worlds. The engine in the Invicta car, the Meadows 2½-litre, 6-cylinder engine had push-rod overhead valves. Its low-speed torque permitted the Invicta car to accelerate from a walking pace to 60mph in top gear, but a four-speed gearbox was provided, all the same, and the Invicta car make’s sustained high-speed cruising capabilities became legendary after winning the Dewar Trophy for long-distance reliability runs in 1927 and 1929. In outward appearance the first Invicta car was very staid, and it was marred by the fact that the brakes on the Invicta car were poor. The rivets down the bonnet were copied from the Rolls-Royce. During 1926, an engine with a bigger bore, providing 3 litres, was offered on Invicta cars alongside the original unit, and by 1927 was the only one sold. In that year real speed arrived for the fist time in the shape of the 4½-litre Invicta car. This Invicta car had a larger bore still, with an 85mph maximum and really shattering acceleration in spite of pulling a 3.9:1 axle ratio. By late 1929, the 3-litre Invicta car had been dropped. The 1931 4½-litre came in two types: the Invicta 4½-litre high-chassis, and the Invicta 4½-litre ‘100-mph’ low-chassis model. The latter Invicta car was lowered by underslinging the rear springs. This invicta car was capable of 95mph.

Unfortunately the splendid Invicta car was always expensive, and its roadholding reputation was damaged among sportsmen, who were by now its most important customers, by a highly-publicized accident to S.C.H. Davis at Brooklands in 1931. In spite of a win in the Monte Carlo Rally of an Invicta car, a Coupe des Glaciers in the Alpine Trial that year and almost equal success in the same events in 1932, only about 1.000 Invicta cars were made before production ceased in 1935. Invicta tried to stave off the end by introducing a small Invicta car for a more popular market in 1932. This Invicta 12/45 was not a success because the single overhead-camshaft 6-cylinder engine, amade by Blackburne, was of only 1½-litres’ capacity. However efficient this Invicta car was, it could not cope with its heavy chassis without the aid of an axle ratio of 6:1. This gave the famed flexibility, but not the performance you would expect on an Invicta car. The 12/45 was supplemented in 1933 by the supercharged Invicta 12/90, but only a handful were made. Both Invicta cars were seen with Wilson self-changing gearbox, the weight of which cannot have helped. After Invicta ended, Macklin went on to make the Railton, a machine with the traditional Invicta car performance characteristics allied to low price. For 1938, three new Invicta cars, in 2½-, 3- and 4-litre form, were planned. All these Invicta cars were to have 6-cylinder, overhead-valve engines, all-synchromesh gearboxes, and independent front suspension by transverse spring. Nothing was seen of these Invicta cars, the chassis of which seem to have been disguised Darracqs and the bodies similar to those of the 3-litre D670 Delage.

The old Invicta name was revived briefly after World War 2, when it was attached to a luxury car called the Invicta Black Prince, powered by a 6-cylinder Meadows engine of three litres, with two overhead camshafts and two plugs per cylinder. This unit produced 120bhp at 5.000rpm. Unlike earlier Invicta cars, the car’s other characteristics were highly unconventional. There was no gearbox in the Invicta car; instead, a Brockhouse hydrokinetic turbo transmitter that provided automatic transmission on any ratio between 15:1 and 4,27:1. Suspension was independent all round, by torsion bars. But the new Invicta car was another horribly expensive car, although plans envisaged an output of 250 a year, it met the same fate as its predecessors after only a score or so had been made. AFN Ltd, manufacturers of the Frazer Nash, acquired the assets of the dead firm.

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