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Simson Duo 4/1, 1979
| Manufacturer | Simson |
| Model | Duo 4/1 |
| Year of production | 1979 |
| Start of production | 1973 |
| End of production | 1989 |
| Body type |
three-wheeler |
| Number of doors | 0 |
| Number of seats | 2 |
| Engine position |
mid |
| Drive wheel |
? |
| Fuel |
petrol |
| Number of cylinders |
inline 1 |
| Cooling |
air |
| Capacity | 50 ccm, 3 cu-in |
| Bore | 40.0 mm, 1.575 in |
| Stroke | 39.5 mm, 1.555 in |
| Compression ratio | 9.5:1 |
| Valve Gear |
two-stroke |
| Valves per cylinder | |
| Fuel system |
carburator, 1 x BVF |
| Aspiration |
normal |
| Max power [kW / PS / hp] |
3 / 4 / 4 at 5500 rpm |
| Max torque [Nm / ft-lb] |
5 / 4 at 4800 rpm |
| Total power (hybrid) | |
| Total torque (hybrid) |
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| Gearbox | M3 |
| Gearbox (option) | |
| Wheelbase | 1550 mm, 61 in |
| Front track | |
| Rear track | 1140 mm, 44.9 in |
| Length | 2130 mm, 83.9 in |
| Width | 1450 mm, 57.1 in |
| Height | 1380 mm, 54.3 in |
| Weight | 170 kg, 375 lb |
| Maximum speed |
55 km/h, 34 mph |
| 0-100 km/h | |
| Standing km | |
| Foto: Z.Patera Auta5P, Auto-Moto Muzeum Františkovy Lázně 2019 |
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