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

Lea-Francis

GB, 1904 – 1906; 1920 – 1935; 1937 – 1953; 1960

(1) Lea & Francis Ltd, Coventry, Warwickshire, 1904 – 1935

(2) Lea-Francis Cars Ltd, Coventry, Warwickshire, 1937 – 1960

Lea Francis started as bicycle manufacturers, like so many car makers, but unlike most of the rest, never went over permanently and consistently to Lea Francis cars. These Lea Francis cars appeared in fits and starts. The first appeared in 1904, in the shape of a 15hp Lea Francis car with a 3-cylinder horizontal engine, the oddest feature of which was its connecting rods over 3ft long. In the same year, however, Lea Francis stopped making their cars, and Singer the Cycle Company began building Lea Francis cars under licence and under the Singer name. R.H. Lea had in fact worked for Singer before branching out on his own. Thus began another famous car name. Lea Francis made motor cycles from 1911, and they concentrated on these until 1920. In that year two Lea Francis cars reappeared beside the motorcycles; assembled 4-cylinder touring Lea Francis cars of 11.9 and 13.9hp. Few of either were made. Then, late in 1922, the Lea Francis car company found its feet at last, with an equally conventional assembled light Lea Francis car. This Lea Francis car had a 1.074cc 4-cylinder sv engine of 8.9hp by Coventry-Simplex, replaced in the following year by a 10hp Meadows unit of 1¼ litres with overhead valves. A Lea Francis car with 7hp Bradshaw flat-twin engine came to nothing. There were 3 forward speeds and quarter-elliptic springs at both ends. The 10hp Lea Francis car was very popular, and was made until 1928. Like other Lea Francise cars to come, it was well made, dependable, and lively. The great moment came for the Lea Francis cars in the very important RAC Small Car Trials of 1924, in which the Lea Francis car made the best all-round performance. During 1925 a wider family market was sought with the 12/22hp J-type Lea Francis car. This Lea Francis car had a longer wheelbase, allowing more spacious bodies, front-wheel brakes, a 1½-litre 4EC Meadows engine to cope with the weight and a 4-speed gearbox. For the sake of comfort, semi-elliptic springs were substituted at the rear on the P-type Lea Francis car introduced for 1928, which also had a plate clutch and 4ED meadows engine.

The Lea Francis car firm’s first serious sports car was the L-type with 4ED engine, announced for 1925. The Lea Francis 12/40hp was one of the best assembled cars in Britain, and appealed more widely than the light Lea Francis cars. It was, indeed, current until the second cessation of car production in 1935. However, Lea Francis also made some more ponderous, less lively Lea Francis cars, without the same degree of success. From 1925 until 1929, the Lea Francis range duplicated some of the heavy 6-cylinder machines offered by Vulcan of Southport, with whom Lea Francis cars had been associated since 1922. The 18hp Lea Francis car was a 2¼-litre car with cantilever rear springs and overhead worm drive. This Lea Francis car was succeeded by A.O. Lord’s Type T, with its advanced but unreliable Lea Francis LFS-type, double ohc engine of 1.7-litres. There was also, in 1928, a 2-litre six Lea Francis car. These Vulcan/ Lea Francis cars ended with the demise of the Vulcan. However, an excellent Lea Francis car with a six was at last introduced for 1931: the Lea Francis Ace of Spades model, with their own 2-litre, single ohc engine. This Lea Francis car continued alongside the old 12/40hp until 1935, together with a new 18hp Lea Francis car, which was a 2¼-litre enlargement of the Lea Francis Ace of Spades. However, a really powerful Lea Francis car was also listed from 1928. This Lea Francis Hyper Sports was a quite different car, with its heavily-modified, Cozette-supercharged Meadows 1½-litre engine, low build and raked radiator. The sports-racing two-seater Lea Francis car could attain 90mph, though a coupé and a short open tourer could also be had by those who did not intend to enter competitions. The Lea Francis Hyper Sports won the 1928 Ulster Trophy race.

A new company introduced two entirely new Lea Francis cars for 1938. These Lea Francis cars were designed by Hugh Rose, who had been responsible for the Riley Nine engine and, like the Riley, had 4-cylinder power units with push-rod overhead valves operated by two high camshafts. The Lea Francis car had ceased to be an entirely assembled car. A 12hp and a 14hp Lea Francis car were available, with cubic capacities of 1½ and 1.6-litres. Both had a 4-speed synchromesh gearbox. A sports version of the 1½-litre Lea Francis car was also sold, thus maintaining the old tradition. These two ‘Leafs’ were good cars, and as they were new, up-to-date Lea Francis carmodels, they could be continued after World War 2. Most of those built in this period were Lea Francis Fourteens, which were heavier but had a bigger bore and a capacity of 1.8-litres. A tuned sports Lea Francis car of the 14hp arrived for 1948. At the end of that year, an export version of the 14hp Lea Francis car, with torsion-bar independent front suspension, was shown and this suspension was adopted for both the 14hp and for the new 18hp, with a 2½-litre engine, in 1950. The sports model of the 18hp Lea Francis car was a fine car, with 100bhp available. The Lea Francis cars for 1953 had hydraulic brakes, but that was the last year in which the Lea Francis car appeared as a competitive production car. By mid-1952, output had fallen to six Lea Francis cars a week. An expensive car of specialist appeal,  the post-war years were too hard for it. In 1960 a few prototypes of a new sports Lea Francis car, the Leaf-Lynx, were made, but it never reached production. The power unit of this Lea Francis car was a 2½-litre Ford Zephyr, there was independent front suspension and disc brakes were supplied, but the car was ill-favoured and ill received. No better luck attented the Lea Francis carfirm’s attempt to make the Nobel bubble-car.

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