Comparison of Aermacchi 250 Ala Verde Serie 1 1964 and NSU 251 OSL 1934 [S]ave
| Attribute |  Aermacchi 250 Ala Verde Serie 1 1964 × |  NSU 251 OSL 1934 × |
|---|---|---|
| General | ||
| Production from (year) | 1964 | 1934 |
| Make | Aermacchi | NSU |
| Model | Aermacchi 250 Ala Verde Serie 1 | NSU 251 OSL |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor. Amal or Graetzin |
| Displacement (cm³) | 246.2 | 242 |
| Power (kw) | 11.7 | 6.6 |
| Fuel consumption (l/100km) | - | 2.3 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 66 | 64 |
| Stroke (mm) | 72 | 75 |
| Gearbox | - | 4-speed |
| Greenhouse gases | - | 53.4 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Ignition | - | Battery-Bosch |
| Compression | 8.5:1 | - |
| Chassis | ||
| Front suspension | Telescopic -Geriani | - |
| Rear suspension | Swingarm-two shocks | - |
| Front brakes | Expanding brake (drum brake). Simplex | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake). Simplex | Expanding brake (drum brake) |
| Frame type | Single cradle | Open double steel |
| Front tyre | 2.50-17 | 3-19 |
| Rear tyre | 2.50-17 | 3-19 |
| Seat | Dual | Single spring-mounted |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,270 | 1,285 |
| Dry weight (kg) | 114 | 126 |
| Power/weight ratio | 0.1026 | 0.0524 |
| Overall height (mm) | 910 | 1,000 |
| Overall length (mm) | 1,938 | 2,000 |
| Overall width (mm) | 762 | 760 |
| Performance | ||
| Top speed (km/h) | 140 | 100 |
| Fuel capacity (l) | 17 | 11.5 |
| Oil capacity (l) | - | 1.5 |
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