Comparison of Adler M 250 S 1954 and Aermacchi H-D 250 Ala Azzurra 1965 [S]ave
| Attribute |  Adler M 250 S 1954 × |  Aermacchi H-D 250 Ala Azzurra 1965 × |
|---|---|---|
| General | ||
| Production from (year) | 1954 | 1965 |
| Make | Adler | Aermacchi |
| Model | Adler M 250 S | Aermacchi H-D 250 Ala Azzurra |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Twin, two-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 247 | 246 |
| Power (kw) | 11.7 | 10 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | - |
| Bore (mm) | 54 | - |
| Stroke (mm) | 54 | - |
| Gearbox | 4-speed | - |
| Clutch | Wet multiplate | Wet multiplate |
| Lubrication system | - | Bobine |
| Compression | 5.8:1 | 7.0:1 |
| Chassis | ||
| Front suspension | - | Telescopic |
| Rear suspension | Two schock | Swingarm-two shocks |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake). Simplex |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake). Simplex |
| Diameter (mm) | 180 | 160 |
| Frame type | Semi double cradle | Single cradle |
| Front tyre | - | 2.50-17 |
| Rear tyre | - | 2.50-17 |
| Seat | Single | Dual |
| Wheels | - | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Dry weight (kg) | 135 | 114 |
| Power/weight ratio | 0.0867 | 0.0877 |
| Performance | ||
| Top speed (km/h) | 116 | 125 |
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