| Attribute | Simson 425 T 1958 × | Adler M 250 S 1952 × |
|---|---|---|
| General | ||
| Production from (year) | 1958 | 1952 |
| Make | Simson | Adler |
| Model | Simson 425 T | Adler M 250 S |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Twin, two-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 247 | 247 |
| Power (kw) | 8.8 | 11.7 |
| Cooling system | Air | Air |
| Transmission type,final drive | Shaft drive (cardan) | Chain |
| Bore (mm) | 68 | 54 |
| Stroke (mm) | 68 | 54 |
| Gearbox | - | 4-speed |
| Ignition | Magneto | - |
| Clutch | - | Wet multiplate |
| Compression | - | 5.8:1 |
| Chassis | ||
| Rear suspension | - | Two schock |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 180 | 180 |
| Frame type | Steel | Semi double cradle |
| Front tyre | 3.25-19 | 3.25-16 |
| Rear tyre | 3.25-19 | 3.25-16 |
| Seat | Single | Single |
| Wheels | Spoked | - |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 140 | 135 |
| Power/weight ratio | 0.0629 | 0.0867 |
| Performance | ||
| Top speed (km/h) | 100 | 116 |
| Fuel capacity (l) | 12 | 12 |