Ford

At the beginning of 1978, the Muir Hill Series III models were introduced, featuring a new 30% more spacious Spacecab. Noise levels were reported to be 83…86 dB. The engines had slightly more power. The 111 and 121 models with Ford transmissions were fitted with a Dual Power quickshifter. The 171 had an Eaton-Fuller T4510 transmission. Other key features, according to the brochure, were axles manufactured by Muir-Hill, a hydraulically engaged front axle lock, oil-immersed disc brakes on four wheels, a tapered roller bearing gearbox and a 2-speed power take-off with a replaceable axle head.

At the end of 1978, the range was completed by the turbocharged 141, which was available in a 158-horsepower Ford-engined version as well as a 143-horsepower Perkins version. In some exotic export markets, service was only available for Perkins. The 141's specifications matched the 121 except for the wider standard tyres.

Muir-Hill production ended in a takeover in the autumn of 1982. Later, there was a weak attempt to continue production under the name Myth-Holm.

Muir-Hill

Traktoren

Muir-Hill 111-171 Series III

The most significant improvement of the Muir-Hill Series II models introduced in 1972 was the much improved, flat-floor cabin. There were sliding doors on both sides and large window surfaces.

As before, the Muir-Hills had a front axle with a central axle, gear lock and brakes, four equal-sized wheels and a reinforced Ford 8+2 transmission. The smallest model was now the 111 with a Perkins six-cylinder. The previous 101 with a Ford engine had been replaced by the 121, whose model designation corresponded to the increased power. The fuel tank was larger. The Dual Power quick gearbox was not available until the end of the Series II range.

In 1975, the 161 was replaced by the slightly more powerful 171. Instead of the rare Perkins V8.510, the engine was now the more common 8.8-liter V8.540. Unlike its predecessor, there was only one exhaust pipe. The wheelbase was increased by 22 cm. The cab was now a redesigned white Series II, almost similar to the smaller models.

Muir-Hill 111-171

In 1969, the Muir-Hill model 161 was introduced, which was clearly more powerful than the previous models. The engine was a Perkins 8.36-liter V8 with an output of 163 hp and the transmission was a Fuller 10+2. There were two 14-inch clutches.

The 161 was almost as compact in external dimensions as the smaller models, with a wheelbase 8 cm longer. The turning circle was promised to be 10.0 meters and only 6.1 meters with the steering brake. A compressed air system was standard equipment, and the differential locks were engaged pneumatically. A lock was an option at the front. The tires were the same size at the front and rear, the widest being 23.1-26.

The majority of the approximately 200 tractors produced were industrial models. For example, a hitch (Cat III) and a power take-off were optional extras.

The cab was flat-floored and large, but had a sheet metal interior. The 161 remained in production until 1975. It was not until the successor model 171 that it received the Series II cab that had been introduced 1972 in the smaller models.

Muir-Hill 161

Muir-Hill manufactured, among other things, wheel loaders and dump trucks, which were based on Ford technology. In 1965, the company hired an engineer named David Brown, who had at his previous workplace developed a four-wheel drive version of the Ford 5000 called the Northrop 5004, which was not commercially successful. At Muir-Hill, he refined his idea further and the Muir-Hill 101 was born.

The tractor, which was launched at the end of 1966, had a Ford 5000 transmission, four identical wheels and a 101-horsepower Ford 2704 six-cylinder engine. Unlike the competing County and Roadless, the Muir-Hill's panels were completely designed to look like their own and were painted industrial yellow. The front axle, equipped with a hydraulically engaged toothed lock and brakes, was Muir-Hill's own production. The wheelbase was only 190 cm.

In 1967, a Dual Power-based quick-shift transmission was introduced. A basic cabin was introduced in 1970. The final year models, 1971-72, featured a slightly more powerful 6.2-liter engine.

In 1969, the 110-horsepower model 110 was introduced, with a Perkins 6-cylinder engine.

Muir-Hill 101-110

Fortschritt

The RS 04/30, produced between 1953 and 1956, was the successor to the RS 03 Aktivist and RS 02 Brockenhexe in GDR tractor production. The tractor had been developed by the Schönebeck factory, but the manufacturer was VEB Schlepperwerk Nordhausen, the manufacturer of the RS 02. It was the first tractor developed in the GDR that was not based on pre-war German models.

The engine was a new 3.0-liter 2-cylinder pre-chamber diesel EM2-15. The power was 30 hp. Unlike its predecessors, the engine had an electric starter. There were 5+1 gears and the same in the crawl range, making a total of 10+2. The portal axle and 9.00-40 rear wheels provided ample ground clearance. In addition to the belt pulley and 540 rpm rear power take-off, the RS 04 had a front power take-off shaft that rotated at the engine speed. A hydraulic lift and towbar were standard. Most of the tractors produced had a cabin. Colour of the tractor was dark green. More than 7,500 RS 04 models were produced. The model had a problem with the engine's durability.

Photo: Bundesarchiv Bild 183-38423-0003 (Wikimedia Commons). Licensed under CC BY-SA 3.0.

RS 04

In the Nordhausen tractor factory's range, the 40-horsepower RS ​​01 was joined by the smaller RS ​​02/22 Brockenhexe in 1949. It was based heavily on the Normag NG 10, which had been manufactured at the factory before the war, but the design was rounded off. There was no suitable engine in the GDR range, so the 22-horsepower diesel used by Normag was licensed from the West by Deutz. The engine was 2.2 liters and water-cooled. It was started by cranking.

The gearbox was also a Western licensed product, a 4+1-speed ZF. A power take-off and pulley were standard equipment, as was a 6-volt electrical system. A cabin was optional. The Brockenhexes were either brown or green in colour. 1,935 of the model were produced in three years.

RS 02 Brockenhexe

The first East German tractor to go into series production was the RS 01/40. It was based on the XL diesel tractor manufactured by the Famo tractor factory before the war. It was upgraded to the RS 01 by former Famo engineers in Schönebeck and production began at the Horsch factory in Zwickau in 1949. A year later, production moved to the former Normag tractor factory in Nordhausen, and it was named the RS 01/40 Pionier.

The tractor was frameless, meaning the 4F 145 BE engine was part of the supporting structure. This four-cylinder diesel had a displacement of 5.0 liters and produced 40 hp. The engine was started with gasoline and a crank. There were 5+1 gears. A power take-off dependent on the drive clutch was standard equipment and a belt pulley was an option. The front axle was sprung and drum brakes on the differential shaft could be used as a steering brake.

From 1953 onwards, the engine was started using compressed air. In 1957, the improved RS 01/40 Harz was introduced. The power was increased to 42 horsepower and a 24 V starter motor was added to the equipment. The gearbox was an improved model and a hydraulic lifting device was a novelty.

Of the early GDR tractors, the Pionier was the most functional, but heavy for its power. A total of almost 25,000 of them were produced.

RS 01

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