David Brown VAK 3-Baureihe
1 model in this series
David Brown Super Cropmaster (1950-1952) from Meltham, Yorkshire: water-cooled four-cylinder of 2,707 cc for kerosene or petrol, 35.5 hp/26.1 kW at 2,000 rpm, top speed 30 km/h, weight 1,727 kg
David Brown was a British tractor manufacturer based in Meltham, near Huddersfield in Yorkshire. The Super Cropmaster was built from October 1950 to December 1952 and belonged to the VAK-3 series; the K in the designation stands for kerosene operation, as confirmed by the given fuel type of kerosene/petrol. The Cropmaster name denoted the maker's general-purpose tractor for mixed arable farming.
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The water-cooled four-cylinder engine has a displacement of 2,707 cc and produces 26.1 kW (35.5 hp) at 2,000 rpm. The Super Cropmaster is 2,991 mm long, 1,626 mm wide and 1,543 mm high, with a wheelbase of 1,892 mm and a weight of 1,727 kg. Its top speed is 30 km/h.
As a kerosene/petrol engine, the Super Cropmaster works with spark ignition rather than compression ignition: it starts on petrol using spark plugs and magneto ignition, then switches to the cheaper kerosene once warm, which required an extra carburettor with a change-over valve. At just over 26 kW, it sat in the mid power class of tractors of its time, built for ploughing, sowing and harvest work in general arable farming.
When buying a used example of such a spark-ignition engine, check the ignition system, spark plugs and magneto, the carburettor with its fuel change-over, and the condition of the radiator and water pump. Beyond that, check the clutch, gearbox and PTO clutch together with the belt pulley often fitted in addition on tractors of this period, as well as rust on wings and sheet metal. Spare parts are supplied by specialist dealers in classic David Brown tractors.
Sources: SpecCodex-Register: Kennwerte des Modells David Brown Super Cropmaster
Models
Tractor in 3D section
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