RS01

The tractor RS01 with the brand name Pionier (english: Pioneer) is the first tractor produced in the GDR. Production started in 1949 in the VEB Horch Kraftfahrzeug- und Motorenwerke Zwickau plant, the production was moved to the newly founded VEB Schlepperwerk Nordhausen in 1950. The RS01 is based on the FAMO XL, which was produced before World War II by FAMO.

RS01
RS01 in 1952
TypeAgricultural tractor
ManufacturerSchlepperwerk Nordhausen
Horch
Production1949 - 1958
Length3650 mm
Width1720 mm
Height2200 mm
Weight3300 kg
PropulsionTyres
Engine model4F 145
Gross power29 - 31 kW
Drawbar pull19.07 kN
Speed17.5 km/h
Preceded byFAMO XL
Succeeded byRS14
Pionier of the german-sorbian MAS in Panschwitz
RS01 Pionier ploughing

The Pinonier RS01/40

After the construction plans of the FAMO XL tractor were revised and optimized for the given production capabilities by former FAMO engineers in Schönebeck, the Horch plant in Zwickau started the production of the RS01 in 1949 because the tractor plant in Schönebeck did not have enough production capability. The first RS01 was shown to the public at the Leipzig Trade Fair in 1949 with a FAMO logo at the grill. 2250 tractors were produced from 1949 to 1950. In 1950, the production was moved to the tractor plant Nordhausen, the tractor was renamed: RS01 Pionier. It was produced until 1956. Starting in 1957, the tractor was revised. The new name was RS01 Harz. The production of the Harz ended in 1958, when 2175 Harz-tractors had been produced. This caused a gap in the 30-kW-class. In 1966 the RS14/40 filled the gap as the successor of the Harz.

Technical description

The RS01 uses a frameless block construction with a rigid rear axle and a front swing axle with leaf springs. Engines of the type 4F 145 BE were used, they are water-cooled inline four cylinder four stroke diesel engines with prechamber injection and five litres of displacement. The rated power is 29.4 kW. These engines were started using a crank and petrol, they were switched to diesel fuel afterwards. The torque is transmitted to the mechanical five speed gearbox with a single disc dry clutch; only the rear wheels are driven. They are equipped with drum brakes, the handbrake is a gear box brake. For power take-off, the RS01 has a clutch dependent PTO. A belt pulley was also available for the RS01. Starting in 1953, the prechamber engine was replaced with a swirl chamber engine, which was started using compressed air.

The Harz-tractor is an optimized model of the Pionier. It has a new swirl chamber engine producing 31 kW, which was started with an electric 24 volts starter motor. The gearbox was replaced with a different model and an oil-hydraulic hitch was placed in the back of the tractor.

Technical specifications
RS01 maintenance, december 1955
Well visible engine
RS01/40 Pionier RS01/40 Harz
Engine
Prdocution 1949 - 1953 1953 - 1956 1957 - 1958
Engine 4F 145 BE 4F 145 DL 4F 145 DE
engine type four stroke diesel
Cooling system water circulation cooling
Engine starting system Petrol and hand crank Compressed air Electric motor
Fuel injection Prechamber Swirl chamber
Injection pump IFA EP 453 IFA DEP B S-171
Injection pressure 98 bar
Compression 17:1
Bore × Stroke 105 × 145 mm
Displacement 5022 cm³
Rated power at 1250 min−1 29.4 kW 30.9 kW
Torque at 1250 min−1 225 N·m 236 N·m
Fuel consumption 320 g/kWh
Powertrain
Torque is transmitted to rear tyres
Tyres front: 6.5 - 20" AS
rear: 12.75 - 28" AS
Clutch Renak PF 28K
Gearbox Manual five-speed gearbox with reverse gear
Speeds in km/h
1. Gear 3.8 3,65
2. Gear 5.0 4,82
3. Gear 6.0 5,83
4. Gear 9.5 9,26
5. Gear 17.5 17,25
R. Gear 3.0 2,81
Drawbar pull On asphalt: 19.07 kN
On dirt: 15.39 kN
Dimensions and weight
Length 3650 mm 3390 mm
Width 1720 mm 1725 mm
Height 2200 mm 2395 mm
Wheelbase 2080 mm
Groudn clearance 300 mm 325 mm
track width front: 1290 mm
rear: 1390 mm
Turning radius with steering brake 4500 mm ?
Weight 3300 mm
Maximum weight 3700 mm
Max. axle loads front: 1200 kg
rear: 2500 kg
Power take-off and other devices
PTO PTO clutch-dependent, 540 min−1
Belt pulley available not available
Hydraulic system not available three-point-hitch
Generator 12 V, 130 W
Battery lead-acid
Starter motor none 24 V, 2942 W
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References

    Bibliography
    • Achim Bischof: Traktoren in der DDR - Podszun-Verlag, 2004, ISBN 978-3861333487.
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