NSU Sportmax (1954-56) vs NSU 4 Hp (1920-25)
Comparison technical specifications
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| Make: | NSU | NSU |
| Model: | Sportmax | 4 Hp |
| Years: | 1954-56 | 1920-25 |
| Engine: | Single cylinder, 4 stroke, OHC | V-Twin cylinder, 4 stroke |
| Capacity: | 247 cc / 15 cub in | 498 cc / 30.4 cub in |
| Cooling: | Air/Oil cooled | Air cooled |
| Starting: | Kick start | Starter crank with flywheel |
| Ignition: | Coil | Magneto |
| Max Power: | 20.6 kW / 28 hp @ 10 00 rpm | 6.8 kW / 6.5 hp @ 3000 rpm |
| Final Drive: | Chain | Belt |
| Frame: | Single-bar stamped plate with engine protection and suspended | Steel, integrated open frame with engine as integral component |
| Rear suspension: | Telescopic suspension | Dual coil springs |
| Top Speed: | 212 km/h / 131.7+ mph | 80 km/h / 50 mph |