The Rosengart LR4SA Ariette is a saloon (sedan) with 2 doors and a front mounted engine which supplies its power through the rear wheels.
Power is produced by a side valve, 0.7 litre naturally aspirated 4 cylinder engine, with 2 valves per cylinder that produces power and torque figures of 21 bhp (21.3 PS/15.7 kW) at 4000 rpm and 39 N·m (28.8 lb·ft/4 kgm) at 3000 rpm respectively.
The engine delivers its power through to the wheels via a 4 speed manual transmission.
Its quoted kerb weight is 720 kg.
Maximum quoted speed is 90 km/h, which equates to 56 mph.
Full specs
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| bodywork | |||
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| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2250 mm | 88.6 inches | |
| Track/tread (front) | 1200 mm | 47.2 inches | |
| Track/tread (rear) | 1200 mm | 47.2 inches | |
| Length | 3900 mm | 153.5 inches | |
| Width | 1480 mm | 58.3 inches | |
| Height | 1430 mm | 56.3 inches | |
| Ground clearance | 160 mm | 6.3 inches | |
| length:wheelbase ratio | 1.73 | ||
| Kerb weight | 720 kg | 1587 lb | |
| Weight distribution | |||
| fuel tank capacity | 27 litres | 5.9 [7.1] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | |||
| Engine code | |||
| Cylinders | Straight 4 | ||
| Capacity | 0.7 litre 747 cc (45.585 cu in) |
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| Bore × Stroke | 55.9 × 76.2 mm
2.2 × 3 in |
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| Bore/stroke ratio | 0.73 | ||
| Valve gear | side valve (SV)
2 valves per cylinder 8 valves in total |
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| maximum power output | 21.3 PS (21 bhp) (15.7 kW) at 4000 rpm |
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| maximum torque | 39 Nm (28.8 ft·lb) (4 kgm) at 3000 rpm |
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| Specific output | 21 kW/litre 28.5 ps/litre 28.1 bhp/litre 0.46 bhp/cu in |
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| Specific torque |
52.21 Nm/litre
0.63 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 6.75:1 | ||
| Fuel system | 1 Solex 26 GNF carburettor | ||
| bmep (brake mean effective pressure) | 656.1 kPa (95.2 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 186.75 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 90 km/h (56 mph) | ||
| Power-to-weight ratio | Higher is better 29.57 PS/tonne (1000 kg) 0.03 PS/kg 21.75 kW/tonne (1000 kg) 0.02 kW/kg 29.17 bhp/tonne (1000 kg) 0.03 bhp/kg 0.01 bhp/lb |
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| Weight-to-power ratio | Lower is better 45.98 kg/kW 76.8 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 145 x 400 | ||
| Tyres rear | 145 x 400 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 5.55 | ||
| general | |||
| Carfolio.com ID | 229009 | ||
| Production total | |||
| Model code | |||
| RAC rating | 7.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1952 Rosengart LR4SA Ariette added 2011-01-11. Last modified 2020-02-02. |
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