Comparison of AJS Model 20 500 1956 and Zündapp KS 500 Kardan Sport 1939 [S]ave
| Attribute |  AJS Model 20 500 1956 × |  Zündapp KS 500 Kardan Sport 1939 × |
|---|---|---|
| General | ||
| Production from (year) | 1956 | 1939 |
| Make | AJS | Zündapp |
| Model | AJS Model 20 500 | Zündapp KS 500 Kardan Sport |
| Category | Allround | Sport |
| Engine and transmission | ||
| Engine type | Twin, four-stroke | Two cylinder boxer, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 498 | 498 |
| Power (kw) | 14.6 | 17.5 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Shaft drive (cardan) |
| Bore (mm) | 66 | 66 |
| Stroke (mm) | 72.8 | 66.6 |
| Gearbox | 4-speed | - |
| Ignition | Magneto | - |
| Clutch | Wet multiplate | - |
| Compression | 7.0:1 | - |
| Chassis | ||
| Front suspension | Telescopic | - |
| Rear suspension | Twin shock | Rigid |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Single cradle | - |
| Front tyre | 3.25-19 | 3.50-19 |
| Rear tyre | 3.25-19 | 3.50-19 |
| Seat | Dual | Single |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | - |
| Dimensions | ||
| Dry weight (kg) | 178 | 185 |
| Power/weight ratio | 0.082 | 0.0946 |
| Performance | ||
| Top speed (km/h) | 137 | 135 |
| Fuel capacity (l) | 13.5 | - |
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