Munktells 18-20 and 20-24 hk

During the First World War there was a shortage of people to work on the land. This led to growing interest in mechanization and in a small tractor suitable for small farms, the most common kind of farm. The Munktell 18-20 hk, which was in principle created by halving the larger 30-40, was developed. The machine weighed 4,2 t and was powered by a single-cylinder horizontal ignition bulb engine with a capacity of about 12 liters (240 x 280 mm). The tractor was designed to work with three-share plows. Its normal power output was 18 hk, with a peak output of 20 hk.

The power was soon increased to 20 and 24 hk respectively, which led to a change in the model number. The low-revving engine, which ran at 400 r/min, had two large flywheels for smooth running. The gearbox had two forward gears, giving speeds of 2,4 and 2,7 km/h, and one reverse gear. Needing little supervision, the machine became a popular stationary power source for threshing machines, crushers, etc. It continued to be used for this purpose long after it became obsolete for use as a tractor in the field.
18–20 hk and 20–24 hk specifications
Engine Munktells
Cylinders 1
Cylinder capacity, l 12,7
Rated output, hk 18/20, 20/24
Gears, forward/reverse 2/1
Wheelbase, mm 2 560
Weight, kg 4 200
Production no.
...18-20 hk 8
...20-24 hk 320
Production year
...18-20 hk 1916
...20-24 hk 1917–1920

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