A.C. 

GB, 1908 to date

(1) Autocars and Accessories Ltd, West Norwood, London S.E. 1908-1911

(2) Autocarriers (1911) Ltd, Thames Ditton, Surrey 1911-1922

(3) A.C. Cars Ltd, Thames Ditton, Surrey 1922 to date

This make succeeded the Weller and was a John Weller design developed from a commercial 3-wheeler, the AutoCarrier (hence the initials) with a single-cylinder rear-mounted moiv engine, 2-speed epicyclic gear and tiller steering. These side-by-side two-seater A.C. Sociables were made up to World War 1 and sold for less than £100, but in 1913 the company brought out a 10hp 4-cylinder light car with a 3-speed gearbox in the rear axle; the engine was a 1.100cc Fivet. A modernized version with electrics and a disc transmission brake appeared with the 1½-litre side valve Anzani engine in 1919, the giving way to A.C.’s own power unit in 1925 – the fours were dropped at the end of 1928. Also at the 1919 London show was Weller’s famous 1.991cc single ohc wet-liner six, an advanced power unit for its day. It did not get into production unitl 1922, but it remained in the catalogue until 1963, by which time output had gone up from around 35bhp to 103bhp. Under the aegis of S.F. Edge, the company’s director from 1921 to 1929, A.C.’s were raced, through their main interest was long-distance record work. A 4-cylinder car took 57 records at Brooklands Track in 1921; J.A. Joyce’s 16-valve ohc 1500cc single-seater covered 100 miles in the hour from a standing start in 1922; and Gillet broke the World’s 24-hour Record at Monthlhéry in 1925 on a 2-litre six. The 6-cylinder car of the Hon. Victore Bruce and W.J. Brunell became the first British entry to win the Monte Carlo Rally in 1926. In 1925 4-cylinder cars sold from £300, the cheapest six being £90 dearer, 4-wheel brakes were an optional extra, being standard on the 2-litre by 1927. All these cars retained the rear-axle gearbox, though the disc transmission brake did not last long.

Financial difficulties supervened in 1929, and virtually no cars were made for a couple of seasons, though the 1930 Magna series boasted hydraulic brakes. Th Hurlock brothers bought the company in 1930, and the 2-litre emerges in 1933 as a sporting machine with mechanical brakes and a conventionally-mounted 4-speed gearbox, in 56bhp and 66bhp versions. These cars were made on a bespoke basis, prices starting at around £435. Pre-selector boxes were available from 1934 and standard 1935 versions had synchromesh, while cars sold in 1936 had engines of 60 and 70bhp with an 80bhp sports engine available in a special short-chassis two-seater model. A 90bhp super-charged engine was listed in 1939.

A.C. resumed car production in 1947 with a saloon in the modern idiom. This had a 74bhp engine, and hydro-mechanical (full hydraulic from 1950) brakes, but retained its semi-elliptical springing up to the end of production in 1957. Some 3-wheeled monocars for invalids were made with 250cc B.S.A. motor cycle engines, and in 1953 came the Petite, a 3-wheeler roll-top convertible with rear-mounted 350cc Villiers power unit; despite a price of under £400, this never really became popular and was dropped in 1958. 1954 saw the advent of the Ace sports two-seater, a tubular-framed machine with all-independent suspension designed by John Tojeiro. With an 85bhp A.C. engine it could top the 199mph mark, and was later made also with 2-litre and 2.2-litre Bristol and 2.6-litre Dagenham Ford engines. Front disc brakes were standardized in 1960. In 1963 this car was developed into the Cobra (inspired by the American Carroll Shelby) with disc brakes all round and a 4.7-litre oversquare American Ford V8 engine developing 330bhp.

A Cobra finished 4th at Le Mans in 1964, but between 1965 and 1968 Shelby American Inc were responsible for the marketing of the 7-litre type, all Cobra production being abandoned in the latter year. From 1966, however, A.C. offered a luxury convertible or hardtop with Frua bodywork and a 7-litre Ford V8 engine, available with a 4-speed manual or an automatic gearbox. This 428 series was continued into 1973 at a price of £7.010. A.C. also made a special single-seater 3-wheeler for invalids with single-gear automatic transmission, wheel or handlebar steering, and fiberglass coupé body, powered by a 500cc 4-stroke twin engine.

Source: Georgano, encyclopedia of motorcars. 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