Comparison of Aermacchi Chimera 250 1964 and NSU 251 SS 1927 [S]ave
| Attribute |  Aermacchi Chimera 250 1964 × |  NSU 251 SS 1927 × |
|---|---|---|
| General | ||
| Production from (year) | 1964 | 1927 |
| Make | Aermacchi | NSU |
| Model | Aermacchi Chimera 250 | NSU 251 SS |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. DellÓrto | Carburettor |
| Displacement (cm³) | 246 | 247 |
| Power (kw) | 10 | 7.3 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 66 | 63 |
| Stroke (mm) | 72 | 80 |
| Gearbox | - | 3-speed |
| Compression | 7.0:1 | - |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 2.50-17 | 2.50-26 |
| Rear tyre | 2.50-17 | 2.50-26 |
| Seat | Dual | Single |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,360 | 1,330 |
| Dry weight (kg) | 125 | 110 |
| Power/weight ratio | 0.08 | 0.0664 |
| Performance | ||
| Top speed (km/h) | 120 | 100 |
| Fuel capacity (l) | - | 7.75 |
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