Heinrich Lanz Verdampfer-Reihe
1 model in this series
Heinrich Lanz Verdampfer-Reihe (FHD-Feldmotor): water-cooled two-cylinder unit with 12,475 cc, 27.8 kW and 4,200 kg from the years 1925 to 1927
In the 1920s, alongside its later Bulldog series, Heinrich Lanz of Mannheim also built field engines with a surface-evaporation carburettor, in which dense liquid fuel was vaporised on a heated surface before entering the cylinder. This technique allowed operation on various heavy fuels without the finer atomisation of a modern carburettor.
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The FHD-Feldmotor is powered by a water-cooled two-cylinder engine of 12,475 cc, producing 38 hp, or 27.8 kW, at 650 rpm. At a weight of 4,200 kg, a length of 3,795 mm, a height of 2,660 mm, a width of 1,946 mm and a wheelbase of 2,280 mm, the machine reaches a top speed of 6.5 km/h.
A large displacement at low engine speed was typical of the early pulling machines of this period: they drew their torque from engine size rather than high speed, and were built for heavy pulling and ploughing work, not fast travel. A top speed of 6.5 km/h accordingly amounted to walking pace. Operators guided the machine on foot alongside it for some tasks, given this speed.
When buying such an old field engine, the condition of the evaporating surface and the cylinder bore matters most, since wear and deposits appear there first, along with the radiator and water pump for leaks. The gearbox and brakes should be checked for function; spare parts for such an early series are now practically only available from museum or collector stocks.
Sources: SpecCodex-Register: Kennwerte des Modells Heinrich Lanz FHD-Feldmotor
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Turn the model, look inside and click an assembly — each one is explained.
