Comparison of Ducati 250 Diana 1966 and Simson 425 T 1958 [S]ave
| Attribute |  Ducati 250 Diana 1966 × |  Simson 425 T 1958 × |
|---|---|---|
| General | ||
| Production from (year) | 1966 | 1958 |
| Make | Ducati | Simson |
| Model | Ducati 250 Diana | Simson 425 T |
| Category | Sport | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. DellÓrto 29mm carbs | Carburettor |
| Displacement (cm³) | 249 | 247 |
| Power (kw) | 13.9 | 8.8 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Shaft drive (cardan) |
| Bore (mm) | 74 | 68 |
| Stroke (mm) | 57.8 | 68 |
| Fuel control | Desmodromic valve control | - |
| Ignition | - | Magneto |
| Compression | 8.0:1 | - |
| Chassis | ||
| Front suspension | Hydralic telescopic forks | - |
| Rear suspension | Dual choks | - |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 160 | 180 |
| Frame type | - | Steel |
| Front tyre | 2.75-18 | 3.25-19 |
| Rear tyre | 3.00-18 | 3.25-19 |
| Seat | Dual seat | Single |
| Wheels | - | Spoked |
| Dimensions | ||
| Dry weight (kg) | 135 | 140 |
| Power/weight ratio | 0.103 | 0.0629 |
| Performance | ||
| Top speed (km/h) | 150 | 100 |
| Fuel capacity (l) | 13 | 12 |
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