''Radschlepper Ost'', literally "wheeled tractor east", also known as Škoda RSO or Porsche 175, was a German heavy

Four-wheel drive Four-wheel drive, also called 4×4 ("four by four") or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer cas ...

military

tractor A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction. Most commo ...

used during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...

. It was designed by

Ferdinand Porsche Ferdinand Porsche (3 September 1875 – 30 January 1951) was an Austrian-German automotive engineer and founder of the Porsche AG. He is best known for creating the first gasoline–electric hybrid vehicle (Lohner–Porsche), the Volksw ...

in 1941 and produced by

Škoda Škoda means ''pity'' in the Czech and Slovak languages. It may also refer to: Czech brands and enterprises * Škoda Auto, automobile and previously bicycle manufacturer in Mladá Boleslav ** Škoda Motorsport, the division of Škoda Auto respons ...

Mladá Boleslav Mladá Boleslav (; german: Jungbunzlau) is a city in the Central Bohemian Region of the Czech Republic. It has about 42,000 inhabitants. Mladá Boleslav is the second most populated city in the region and a major centre of the Czech automotive in ...

. Around 206 vehicles were produced between the years 1942–1944.

History

The idea of a heavy multipurpose tractor, intended for the prepared

invasion of the Soviet Union Operation Barbarossa (german: link=no, Unternehmen Barbarossa; ) was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during the Second World War. The operation, code-named afte ...

supposedly came from

Adolf Hitler Adolf Hitler (; 20 April 188930 April 1945) was an Austrian-born German politician who was dictator of Nazi Germany, Germany from 1933 until Death of Adolf Hitler, his death in 1945. Adolf Hitler's rise to power, He rose to power as the le ...

. In 1941

prepared a design of a

four-wheel drive Four-wheel drive, also called 4×4 ("four by four") or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer cas ...

tractor, distinguished by its large diameter - - steel cleated wheels. The vehicle was powered by Porsche's own design

air-cooled Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. In all combustion engines, a great percentage of the heat ge ...

inline-four A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The vast majority of automotive four-cylinder engines use a straight-four layout (with the e ...

petrol engine of 6023 cc

displacement Displacement may refer to: Physical sciences Mathematics and Physics * Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

. As a starter, a two-cylinder petrol engine (half of '' KdF-Wagen'' engine) was used. Final development and production took place in the Škoda automobile plant in Mladá Boleslav, in what was then the

Protectorate of Bohemia and Moravia The Protectorate of Bohemia and Moravia; cs, Protektorát Čechy a Morava; its territory was called by the Nazis ("the rest of Czechia"). was a partially annexed territory of Nazi Germany established on 16 March 1939 following the German oc ...

. The RSO went through its first trials in 1942, but results were disappointing; high weight and narrow wheels caused high

ground pressure Ground pressure is the pressure exerted on the ground by the tires or tracks of a motorized vehicle, and is one measure of its potential mobility, especially over soft ground. It also applies to the feet of a walking person or machine. Ground pr ...

, causing the tractor to get stuck easily even on relatively solid surface. On icy surfaces, the vehicle was almost impossible to steer. Fuel consumption was also unfavourably high. Production still went ahead despite these problems, with around 200 tractors produced during 1942–1944. Because of their faults, they were never deployed on the Eastern Front; instead they served in

Normandy Normandy (; french: link=no, Normandie ; nrf, Normaundie, Nouormandie ; from Old French , plural of ''Normant'', originally from the word for "northman" in several Scandinavian languages) is a geographical and cultural region in Northwestern ...

and

the Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

. Some of them supposedly participated in the

Battle of the Bulge The Battle of the Bulge, also known as the Ardennes Offensive, was the last major German offensive campaign on the Western Front during World War II. The battle lasted from 16 December 1944 to 28 January 1945, towards the end of the war in ...

. No vehicles are known to have survived to the present day.Spremo 1991, p. 116.

Notes

References

* Spremo, Milan (1991). "Atlas našich automobilů 1937–1963", NADAS, Praha. * Cedrych, Mario; Nachtmann, Lukáš (2007). "Škoda - auta známá i neznámá", Grada, Praha. {{WWIIGermanVehicles World War II vehicles of Germany Artillery tractors Škoda automobiles Military vehicles introduced from 1940 to 1944 Military vehicles of Germany

History

See also

Notes

References