Jawa

CS, 1934 – 1939

Zbrojovka Ing. Janecek, Prague

The name Jawa originates from a combination of Janecek and Wanderer, adopted after the Czech firm had acquired a licence to produce German Wanderer motor-cycles. In 1934 Jawa started to build DKW cars under licence. The Jawa 700 had the DKW 2-cylinder 2-stroke 684cc engine, front drive and chassisless wood-frame body, but used a longer wheelbase. The Jawa car was available with various bodies, later versions having steel ones. Streamlined specimens of the Jawa in open and closed form were quite successful in numerous sports events. A new model, the Jawa Minor, built to Tatra designs but based on DKW principles, was introduced in 1937. This Jawa car had a 2-cylinder 2-stroke 615cc engine and front drive. At first it was available as a very attractive two-seater roadster; later a saloon version was also offered. The Jawa Minor was the basis for the post-war Aero Minor. Motorcycle production of Jawa continued after the war, and a number of prototype Jawa minicars were built between 1953 and 1956.

Source: Georgano, encyclopedia of motorcar; HON

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O.M.

Italy, 1918 – 1934

(1) SA Officine Meccaniche, Brescia, 1918 – 1928

(2) O.M. Fabbrica Bresciana di Automobili, Brescia, 1928 – 1934

The Officine Meccaniche (OM cars) was a locomotive-building firm that absorbed Züst in 1918, and continued the production of that firm’s 4.7-litre sv 4-cylinder 25/35hp until 1923. Alongside this, however, they introduced their own design OM cars, with conventional sv monobloc engines, detachable heads, 12-volt coil ignition, thermos-syphon cooiling, and single-plate clutches. The OM cars were the work of an Austrian named Barratouché and changed little with the years, so much so that it is true that only one OM car theme reached the public – first as a four, and then as the famous 2-litre 6-cylinder OM Superba. The OM carcompany showed, but did not market, a 3-litre straight-8 OM car development in 1928. First of the OM car series was the OM 465, a 1.327cc four rated at 12/15hp in Italy. Output of this OM car was 18bhp and there were three forward speeds. In 1921 came the 1.410cc OM 467, and a year later this OM car gave way to the 1½-litre OM 469, available from the start with 4-wheel brakes and (until 1925) with straight bevel back axle. Initially developing a modest 40bhp, this OM car was giving 60bhp in single-carburettor touring form by 1926, and sports model OM cars were capable of 75mph. Competition successes of OM cars included the 1925 Tripoli GP, 4th at Le Mans in 1925 and 1926, and a victory at Minoia and Morandi in the first Mille Miglia of 1927.

In 1926 OM cars built a dohc straight-8 OM car for the 1.500cc Grand Prix Formula, but its 3-speed gearbox was against it, and the best showing of this OM car was a 2nd place in the 1927 European GP. The OM 665 was extensively modified for the British market by Rawlences, the concessionaires in London, and OM cars appeared with dual ignition, 12-plug heads of Ricardo type, 4-speed gearboxes of ENV make with right-hand change, and Dewandre servo brakes. In 1929 Rawlence produced an ohv conversion of the OM car with three carburetors and dual ignition that ran in the TT and the Double-Twelve. This OM car was catalogued in England, though never in Italy, where in the same year some works-built supercharged 80bhp sv OM cars appeared with raked radiators and underslung frames, followed by improved 1930 OM car versions on which capacity was increased to 2.350cc. This OM car was nog offered to the public, though standard 1930 OM cars had 2.2-litre engines; this size persisted until 1934 and supercharged sports editions of OM cars were also listed.

Though OM cars could still race to some purpose (there was a 2nd with an OM car in the 1931 Mille Miglia), the emphasis of OM cars was shifting towards commercial vehicles powered by Saurer diesel engines made under licence, and in 1930 the stock of private OM cars on hand was sold to the Esperia concern, run by two former OM car executives, Coletta and Mangano. It seems unlikely that they built any vehicles, and when Fiat acquired OM cars in 1933 the private cars were doomed.

Curiously, a new design for the OM car was announced in 1934; this one, the OMV or Alcyone, had synchromesh, hydraulic brakes, and overhead exhaust valves, but though the OM car did the round of the shows, this OM car was not made in series. A 1½-litre ohc four designed by Olivio Pellegatti did not even get off the drawing-board. O.M. still exist as makers of trucks, tractors and railway rolling-stock, but since 1968 they have been a sezione of Fiat.

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