The Special Roadster is a rear wheel drive roadster motor car with a front located engine, from Horch.
The power is produced by a naturally aspirated engine of 4.9 litre capacity. This unit features single overhead camshaft valve gear, 8 cylinder layout, and 2 valves per cylinder. It has an output of 118.5 bhp (120 PS/88 kW) of power.
The power is delivered to the wheels through a 4 speed manual gearbox.
Its quoted kerb weight is 2370 kg.
The Horch Special Roadster is claimed to achieve a top speed of 135 km/h (84 mph).
Full specs
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| bodywork | |||
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| Body type | 2 seater roadster | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3300 mm | 129.9 inches | |
| Track/tread (front) | 1510 mm | 59.4 inches | |
| Track/tread (rear) | 1516 mm | 59.7 inches | |
| Length | 5230 mm | 205.9 inches | |
| Width | 1810 mm | 71.3 inches | |
| Height | 1550 mm | 61 inches | |
| Ground clearance | 200 mm | 7.9 inches | |
| length:wheelbase ratio | 1.58 | ||
| Kerb weight | 2370 kg | 5225 lb | |
| Weight distribution | |||
| fuel tank capacity | 95 litres | 20.9 [25.1] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Horch | ||
| Engine code | |||
| Cylinders | Straight 8 | ||
| Capacity | 4.9 litre 4946 cc (301.823 cu in) |
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| Bore × Stroke | 87 × 104 mm
3.43 × 4.09 in |
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| Bore/stroke ratio | 0.84 | ||
| Valve gear | single overhead camshaft (SOHC)
2 valves per cylinder 16 valves in total |
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| maximum power output | 120 PS (118.5 bhp) (88 kW) |
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| maximum torque | |||
| Specific output | 17.9 kW/litre 24.3 ps/litre 24 bhp/litre 0.39 bhp/cu in |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | |||
| Fuel system | |||
| bmep (brake mean effective pressure) | |||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 618.25 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 | 135 km/h (84 mph) | ||
| Power-to-weight ratio | Higher is better 50.7 PS/tonne (1000 kg) 0.05 PS/kg 37.29 kW/tonne (1000 kg) 0.04 kW/kg 50 bhp/tonne (1000 kg) 0.05 bhp/kg 0.02 bhp/lb |
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| Weight-to-power ratio | Lower is better 26.82 kg/kW 44.8 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 | 6.50-17 | ||
| Tyres rear | 6.50-17 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.90 | ||
| general | |||
| Carfolio.com ID | 363627 | ||
| Production total | |||
| Model code | |||
| RAC rating | 37.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1938 Horch Special Roadster added 2014-02-15. Last modified 2020-02-02. |
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