Comparison of Adler ISDT 1957 and Harley-Davidson Crtt 250 1966 [S]ave
| Attribute |  Harley-Davidson Crtt 250 1966 × |  Adler ISDT 1957 × |
|---|---|---|
| General | ||
| Production from (year) | 1966 | 1957 |
| Make | Harley-Davidson | Adler |
| Model | Harley-Davidson Crtt 250 | Adler ISDT |
| Category | Cross / motocross | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Twin, two-stroke |
| Fuel system | Carburettor | Carburettor. Bing |
| Displacement (cm³) | 250 | 247 |
| Power (kw) | - | 13.1 |
| Cooling system | - | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 72 | 54 |
| Stroke (mm) | 61 | 54 |
| Gearbox | 5-speed | - |
| Fuel control | Overhead Valves (OHV) | - |
| Ignition | - | Battery |
| Clutch | - | Enclosed |
| Compression | - | 6.6:1 |
| Chassis | ||
| Front suspension | - | Twin swining link |
| Rear suspension | - | Shock absorbers-plunger |
| Front tyre | - | 3.25-16 |
| Rear tyre | - | 3.25-16 |
| Seat | Single Seat | Single |
| Wheels | - | Spoked |
| Performance | ||
| Top speed (km/h) | 161 | 125 |
| Fuel capacity (l) | - | 12 |
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