Land Rover Series I SWB
Car producer :  |
Land Rover |
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Model: |
Series I SWB |
Year: |
1948-1958 |
Type: |
SUV |
The first prototype had a distinctive feature — the steering wheel was mounted in the middle of the vehicle. It hence became known as the "centre steer". It was built on a Jeep chassis and used the engine and gearbox out of a Rover P3 saloon car. The bodywork was handmade out of an aluminium/magnesium alloy called Birmabright, to save on steel, which was closely rationed. The choice of colour was dictated by military surplus supplies of aircraft cockpit paint, so early vehicles only came in various shades of light green. The first pre-production Land Rovers were being developed in late 1947 by a team led by engineer Arthur Goddard.
The Land Rover series I, II, and III (commonly referred to as series Land Rovers, to distinguish them from later models), or simply the Land-Rover, are compact British off-road vehicles, produced by the Rover Company since 1948, and later by British Leyland. Though unapologetically inspired by the World War II jeep, the Land Rover immediately distinguished itself from all other cars. From launch, it was the first mass-produced civilian four-wheel drive car with doors on it, and an available hard roof. Contrary to conventional car and truck chassis, it used a sturdier fully box-welded frame. Furthermore, due to post-war steel shortage, and aluminium surplus, Land Rovers received non-rusting aluminium alloy bodies, favouring their longevity. In 1992, Land Rover claimed that 70% of all the vehicles they had built were still in use.
Land Rover entered production in 1948 with what has later been termed the Series I. This was launched at the Amsterdam Motor Show. It was designed for farm and light industrial use, with a steel box-section chassis and an aluminium body.
Originally the Land Rover was a single model offering, which from 1948 until 1951 used an 80-inch (2.03 m) wheelbase and a 1.6-litre petrol engine producing around 50 bhp (37 kW; 51 PS). The four-speed gearbox from the Rover P3 was used, with a new two-speed transfer box. This incorporated an unusual four-wheel-drive system, with a freewheel unit (as used on several Rover cars of the time). This disengaged the front axle from the manual transmission on the overrun, allowing a form of permanent 4WD. A ring-pull mechanism in the driver's footwell allowed the freewheel to be locked to provide more traditional 4WD. This was a basic vehicle: tops for the doors and a roof (canvas or metal) were optional extras. In 1950, the lights moved from a position behind the grille to protruding through the grille.
From the beginning it was realised that some buyers would want a Land Rover's abilities without the spartan interiors. In 1949, Land Rover launched a second body option called the "Station Wagon", fitted with a body built by Tickford, a coachbuilder known for their work with Rolls-Royce and Lagonda. The bodywork was wooden-framed and had seating for seven people. Tickford was well equipped in comparison with the standard Land Rover, having leather seats, a heater, a one-piece laminated windscreen, a tin-plate spare wheel cover, some interior trim and other options. The wooden construction made them expensive to build. The Tickford was taxed as a private car, which attracted high levels of Purchase Tax unlike the original Land Rover. As a result, fewer than 700 Tickfords were sold, and all but 50 were exported.
In 1952 and 1953, a larger 2.0-litre petrol engine was fitted. This engine has Siamese bores, meaning that there are no water passages for cooling between the cylinders. During 1950, the unusual semi-permanent 4WD system was replaced with a more conventional setup, with drive to the front axle being taken through a simple dog clutch. Around this time the Land Rover's legal status was also clarified. As mentioned above, the Land Rover was originally classed as a commercial vehicle, meaning it was free from purchase tax. However, this also meant it was limited to a speed of 30 mph (48 km/h) on British roads. After an appeal to the Law Lords after an owner was charged with exceeding this limit, the Land Rover was classified as a "multi-purpose vehicle" which was only to be classed as a commercial vehicle if used for commercial purposes.
The 1954 model year brought major changes. The 80-inch (2.03 m) wheelbase model was replaced by an 86-inch (2.18 m) wheelbase model, and a 107-inch (2.72 m) wheelbase "pick up" version was introduced. The extra wheelbase was added behind the cab area to provide additional load space. In mid-1954 the "spread bore" petrol engine was introduced (from engines 5710xxxx), allowing better cooling between the cylinders. This had been introduced in the Rover car the year before. The engine was modified again in 1955 (from engine 1706xxxxx), sometimes known as the 'later' spread bore.
September 1955 saw the introduction of the first five-door model, on the 107-inch chassis known as the "station wagon" with seating for up to ten people. The 86-inch station wagon was a three-door, seven-seater. The new station wagons were very different from the previous Tickford model, being built with simple metal panels and bolt-together construction instead of the complex wooden structure of the older Station Wagon. They were intended to be used both as commercial vehicles as people-carriers for transporting workmen to remote locations, as well as by private users. Like the Tickford version, they came with basic interior trim and equipment such as roof vents and interior lights.
The Station Wagons saw the first expansion of the Land Rover range. Station Wagons were fitted with a "Safari Roof" which consisted of a second roof skin fitted on top of the vehicle. This kept the interior cool in hot weather and reduced condensation in cold weather. Vents fitted in the roof allowed added ventilation to the interior. While they were based on the same chassis and drivetrains as the standard vehicles, Station Wagons carried different chassis numbers, special badging, and were advertised in separate brochures. Unlike the original Station Wagon, the new in-house versions were highly popular.
In mid-1956 the wheelbases were extended by 2 inches (51 mm) to 88 inches (2.24 m) and 109 inches (2.77 m), and the front chassis cross-member was moved an inch forward, to accommodate the new diesel engine, to be an option the following year. This change was made to all models with the exception of the 107 Station Wagon, which would never be fitted with a diesel engine, and would eventually be the last series I in production. These dimensions were to be used on all Land Rovers for the next 25 years.
In 1957 a brand new 2.0-litre diesel engine was introduced that, despite the similar capacity, was not related to the petrol engines used. The petrol engines of the time used the rather out-dated inlet-over-exhaust valve arrangement; the diesel used the more modern overhead valve layout. This diesel engine was one of the first high-speed diesels developed for road use, producing 52 hp (39 kW) at 4,000 rpm.