Rover 9/20 | |
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Overview | |
Manufacturer | Rover |
Designer | Jack Sangster |
Body and chassis | |
Body style |
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Dimensions | |
Wheelbase |
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Length | 132 inches (3,353 mm) [1] |
Width | 63 inches (1,600 mm) [1] |
Kerb weight | 1,813 lb (822 kg) [2] |
Rover 9/20 | |
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Overview | |
Manufacturer | Rover |
Designer | Mark Wild and staff |
Production | 1924 - 1933 |
Layout | |
Configuration | straight four [1] |
Displacement | 1,074 cc (66 cu in) [1] |
Cylinder bore | 60 mm (2.4 in) [1] |
Piston stroke | 95 mm (3.7 in) [1] |
Cylinder head material | aluminium alloy crankcase |
Valvetrain | overhead valves by Duralumin pushrods, chain-driven camshaft [1] |
Combustion | |
Oil system | forced lubrication by a gear pump in the sump [1] |
Cooling system | water pumped through radiator, no fan [1] |
Output | |
Power output | 20 bhp (15 kW; 20 PS) @ 3,000 rpm Tax horsepower 8.93 [1] |
Dimensions | |
Dry weight | 329 lb (149 kg) [2] |
Chronology | |
Predecessor | Rover 8 |
Successor | Rover 10/25 |
The Rover 9 is a small car produced by Britain's Rover car company. It had a 1074 cc 9 fiscal horsepower four-cylinder engine. Manufactured from 1924 until 1927 it was first supplemented then replaced by Rover's 10-12 model.
A Mark Wild and staff designed 1074 cc water-cooled four-cylinder engine with overhead valves announced August 1924 [1] supplemented then replaced the Rover 8 air-cooled twin and the new vehicle was named 9/20 [3] The new engine with its clutch and gearbox are mounted as a unit to the mainframe at four points. [1] z
Advertised by Rover as "The Nippy Nine" with emphasis on its water coolant circulated by pump, pressure lubricated engine, 3-speed gearbox and silent worm (rear) axle. "Super" models were supplied with rod-operated four-wheel brakes. Steering was by rack and pinion, worm and segment in the more expensive cars. At first the open 4-seater cars had just one door beside the front passenger's seat. [1]
The wheelbase was 104 inches and track 48 inches. The 4-seater sports had a 99-inch wheelbase. [5]
The test car was the sports model with aluminium pistons, double valve springs, higher gear ratios and a lighter body. The car was considered to run pleasantly and do around 60 mph in top gear. When supplied for export the radiator is given a fan. There were complaints about accessibility for servicing and minor repairs. The engine was thought to be unusually smooth for a two-bearing product even at high speed. The steering wheel shook on rough roads otherwise controls were smooth and even. A final comment was "at the price one cannot fairly grumble at three speeds". [6]
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