JAWA & yezdi Club, India - 1935 - Start of production of JAWA 350 OHV motorcycle

Prewar Jawa

1935 - Start of production of JAWA 350 OHV motorcycle

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Written by Dr Amit Chatterjee, SM
Wednesday, 30 May 2007
Four stroke air-cooled OHV single cylinder * Displacement 346 cc (bore and stroke 70 x 90 mm) * Engine power 11 kW at 4000 r.p.m. * Compression ratio 6 to 1 * Total lubrication with double-acting piston pump * Separate four-speed gearbox with foot control * Multi-plate clutch with shock absorber * Closed duplex frame made with stamped steel sections * Rigid rear wheel suspension * Parallelogram front fork with coil spring suspension and friction damper * Weight 142 kg * Maximum speed 115 km/hour * Average fuel consumption 3 to 3.5 litres per 100 km Designed primarily for competition, OHV 350 front fork was fitted with more robust and bigger shock absorbers - central coil spring suspension and friction damper. Special versions, besides chromium plating, are equipped with a bigger headlamp with inbuilt lit up speedometer. In 1935, a year after presenting the first motor cycle of the factory's own design - the 350 SV JAWA, a new OHV three-fifty derived from the SV model, from which only the cylinder and cylinder head differed, was put on the market. In had been designed primarily for competition. Engine displacement was 346 cc (70x90), power output 11 kW (15 HP) at 4000 r.p.m., compression ratio 6 to 1. The casing of the four-speed gearbox was magnesium alloy. The frame was the same as that of the 350 SV, but the OHV 350 front fork was more robust with bigger shock absorbers. With 142 kg weight the maximum speed of the machine was 115 km/hour. It was marketed in Standard and Special versions differing mostly with the extent of chromium plating, the more expensive model was equipped with a bigger headlamp with inbuilt speedometer lit up at night, pedal gearbox control and 3.50 - 19 size tyres, while the Standard was shod with 3.25 - 19 size tyres. In the year of its introduction the Standard cost 8,950 crowns, the Special marketed since 1937 was 500 crowns dearer. The two-piece rear mudguard and detachable spindle made wheel removal considerably easier - the above is from an advertising brochure for the bike! The Overhead-Valve three-fifties were at first manufactured parallely with the Side-Valve models until 1936 when SV 350 machines were withdrawn. On the other hand production of the OHV 350 continued until 1946, of course with the exception of the war years. In all 2700 units were manufactured. Initially the machine was giving some trouble, mostly caused by the total loss lubrication. The 350 OHV's lubrication system The valve gear suffered from oil starvation in the first place. Ignition defects were also appearing. But the engine continued to be improved, the cooling fins were enlarged, the valve gear enclosed, the lubrication trouble remedied. It enjoyed popularity with sportingly disposed motorcyclists. Properly serviced it gave very good service, its engine power and maximum speed satisfied exacting customers. JAWA 350 OHV motorcycle JAWA 350 OHV motorcycle with sidecar Recommend this article...
Last Updated ( Tuesday, 19 June 2007 )

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