RS01

The title of this article is ambiguous. Further meanings are listed under RS-01 .

IFA
RS01 pioneer in field work
RS01
Manufacturer:	Nordhausen Horch tractor works
Sales designation:	1949–56: RS01 / 40 Pioneer 1957–58: RS01 / 40 Harz
Production period:	1949-1958
Engines:	4F 145 diesel, 5022 cc, 29-31 kW
Traction:	19 kN
Length:	3650 mm
Width:	1720 mm
Height:	2200 mm
Wheelbase:	2080 mm
Gauge:	front: 1290 mm rear: 1390 mm
Turning radius:	4500 mm
Standard tires:	front: 6.5 - 20 AS rear: 12.75 - 28 AS
Top speed:	17.5 km / h
Maximum permissible total mass:	3700 kg
Empty weight:	3300 kg
Previous model:	FAMO XL
Successor:	RS14

Pioneer at the German-Sorbian MAS in Panschwitz

RS01 pioneer in plowing; The Falkenstein and the Schrammsteine can be seen in the background .

The RS01 tractor with the brand name Pionier is the first tractor built in the GDR . It was initially produced in the VEB HORCH motor vehicle and engine works in Zwickau , later in the newly founded state-owned company (VEB) Schlepperwerk Nordhausen . The technology goes back to a pre-war development of the vehicle and engine works in Breslau , where the first examples rolled off the production line under the name FAMO XL in the 1930s .

The pioneer RS01 / 40

After former employees of the FAMO-Werke ( Breslau ) in Schönebeck had revised the design documents for the Famo-Tractor XL and adapted them to the given production possibilities, the Horchwerk in Zwickau was commissioned with the production, as no production facilities were available in Schönebeck. At the Leipzig trade fair in 1949, a manufactured tractor was exhibited with the Famo emblem. According to the information available, 2250 machines are said to have been manufactured in Zwickau. This pioneer was manufactured from 1949 to 1950. From 1950 production was relocated to the Nordhausen tractor factory. The tug was now called the RS01 Pioneer and was built until 1956. From 1957 the tractor was manufactured in a revised version and was now called RS01 Harz . Production ended in 1958 after 2175 Harz specimens had been built. The discontinuation of production created a gap in the 30-kilowatt power class that was only closed again in the early 1960s with the RS14 / 40.

technology

The RS01 in a frameless block design with a rigid rear axle and a leaf-sprung swing axle at the front is available with or without a driver's cab. The liquid-cooled four - cylinder in - line engine , a diesel engine with pre-chamber injection of the type 4F 145 BE , develops 29.4 kW (40 hp) from a displacement of around 5 liters . For easier starting with the hand crank, petrol is used for starting and then switching to diesel fuel after it has started . The power is transmitted to a mechanical five-speed gearbox with reverse gear via a single-disc dry clutch . Braking is done with an inner shoe brake that acts on the rear wheels. The handbrake is a band brake that acts on the transmission. To force acceptance of the pioneer RS01 has a clutch-dependent PTO paths at a speed of 540 min ^-1 . A pulley drive was available as an optional extra. From 1953 a new 5-liter 4F 145 DL engine was installed. A vortex chamber injection was used instead of the prechamber and instead of the crank, there was a starter system operated with compressed air ( pneumatically ), which enables the engine to be started with diesel fuel.

The Harz, built from 1957, is a further development of the pioneer. Although this is essentially based on the Pioneer, many points have been extensively revised. Another revised engine of the type 4F 145 DE with vortex chamber injection is used. It has an output of 31 kW. The complicated starting system was replaced by an electric 24 V starter. The gear ratios have been changed. A three-point linkage is available for attachments.

One of the weak points of the tractor is the steering, which can lock when the steering wheel is turned. This is caused by worn chassis parts.

Technical specifications

Repair of an RS01, December 1955

Highly visible engine of an RS01

	RS01 / 40 pioneer		RS01 / 40 resin
engine
construction time	1949-1953	1953-1956	1957-1958
engine	4F 145 BE	4F 145 DL	4F 145 DE
Working principle	Four stroke diesel engine
cooling	Water circulation cooling
Starting device	Petrol start, hand crank	Compressed air start	Starter start
Mixture preparation	Pre-chamber injection	Swirl chamber injection
Injection pump	IFA EP 453	IFA DEP B S-171
Injection pressure	1 kN / cm²
Compression ratio	17: 1
Bore × stroke	105 × 145 mm
Displacement	5022 cc
Nominal output at 1250 min −1	29.4 kW		30.9 kW
Torque at 1250 min −1	225 Nm		236 Nm
Fuel consumption	320 g / kWh
Powertrain
Drive on	Rear wheels
tires	front: 6.5 - 20 AS rear: 12.75 - 28 AS
coupling	Renak PF 28K
transmission	Manual five-speed gearbox with reverse gear
Speeds in km / h
1st gear	3.8		3.65
2nd gear	5.0		4.82
3rd gear	6.0		5.83
4th gear	9.5		9.26
5th gear	17.5		17.25
R. Gang	3.0		2.81
traction	On the road: 19 kN In the field: 15.4 kN
mass and weight
length	3650		3390
width	1720		1725
height	2200		2395
wheelbase	2080
Ground clearance	300		325
Gauge	front: 1290 mm rear: 1390 mm
Turning radius with steering brake	4500		?
Empty weight	3300
Maximum permissible total mass	3700
Maximum permissible axle loads	front: 1200 kg rear: 2500 kg
Power take-off and ancillary units
PTO	Paths PTO clutch-dependent, 540 min -1
Pulley drive	Available as an option		unavailable
Hydraulics	unavailable		Three-point linkage
alternator	12 V, 130 W.
Energy storage	Lead acid accumulator
Electric starter	unavailable		24 V, 2942 W.

literature

• Achim Bischof: Tractors in the GDR. Podszun, Brilon 2004, ISBN 3-86133-348-1 .

Web links

Commons : RS01  - collection of images, videos and audio files

Wikibooks: Tractor Lexicon: Pioneer  - Learning and Teaching Materials

• Further information on the RS01 at radschlepper.de

Individual evidence

1. ↑ Improvement in the steering at the IFA pioneer . In: Motor vehicle technology , 7/1958, p. 270.