Opel 4/12 PS 'Laubfrosch' is a car that has a 2 door convertible/cabriolet type body with a front located engine powering the rear wheels.
It is powered by a naturally aspirated engine of 1 litre capacity. This powerplant features side valve valve gear, 4 cylinder layout, and 2 valves per cylinder. It has an output of 12 bhp (12.2 PS/8.9 kW) of power at 2400 rpm.
The engine supplies its power through to the wheels via a 3 speed manual 'box.
Quoted kerb weight is 570 kg.
Full specs
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| bodywork | |||
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| Body type | 2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2255 mm | 88.8 inches | |
| Track/tread (front) | 1175 mm | 46.3 inches | |
| Track/tread (rear) | 1175 mm | 46.3 inches | |
| Length | 3200 mm | 126 inches | |
| Width | 1350 mm | 53.1 inches | |
| Height | 1650 mm | 65 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.42 | ||
| Kerb weight | 570 kg | 1257 lb | |
| Weight distribution | |||
| fuel tank capacity | |||
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Opel | ||
| Engine code | |||
| Cylinders | Straight 4 | ||
| Capacity | 1 litre 951 cc (58.034 cu in) |
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| Bore × Stroke | 58 × 90 mm
2.28 × 3.54 in |
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| Bore/stroke ratio | 0.64 | ||
| Valve gear | side valve (SV)
2 valves per cylinder 8 valves in total |
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| maximum power output | 12.2 PS (12 bhp) (8.9 kW) at 2400 rpm |
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| maximum torque | |||
| Specific output | 9.4 kW/litre 12.8 ps/litre 12.6 bhp/litre 0.21 bhp/cu in |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | |||
| Fuel system | 1 Zenith carburettor | ||
| bmep (brake mean effective pressure) | |||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 237.75 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 | |||
| Power-to-weight ratio | Higher is better 21.35 PS/tonne (1000 kg) 0.02 PS/kg 15.7 kW/tonne (1000 kg) 0.02 kW/kg 21.05 bhp/tonne (1000 kg) 0.02 bhp/kg 0.01 bhp/lb |
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| Weight-to-power ratio | Lower is better 63.7 kg/kW 106.4 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 | 700 x 80 | ||
| Tyres rear | 700 x 80 | ||
| Brakes F/R | |||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 3 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | |||
| general | |||
| Carfolio.com ID | 559647 | ||
| Production total | |||
| Model code | |||
| RAC rating | 8.3 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1924 Opel 4/12 PS 'Laubfrosch' added 2018-09-25. Last modified 2020-03-16. |
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