Comparison of AJS Model 20 500 1950 and AJS Model 20 500 1949 [S]ave
| Attribute |  AJS Model 20 500 1950 × |  AJS Model 20 500 1949 × |
|---|---|---|
| General | ||
| Production from (year) | 1950 | 1949 |
| Make | AJS | AJS |
| Model | AJS Model 20 500 | AJS Model 20 500 |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Twin, four-stroke | Twin, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 498 | 498 |
| Power (kw) | 14.6 | 14.6 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 66 | 66 |
| Stroke (mm) | 72.8 | 72.8 |
| Gearbox | 4-speed | 4-speed |
| Ignition | Magneto | Magneto |
| Clutch | Wet multiplate | Wet multiplate |
| Compression | 7.0:1 | 7.0:1 |
| Chassis | ||
| Front suspension | Telescopic | Telescopic |
| Rear suspension | Twin shock | Twin shock |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Single cradle | Single cradle |
| Front tyre | 3.25-19 | 3.25-19 |
| Rear tyre | 3.25-19 | 3.25-19 |
| Seat | Dual | Dual |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Dry weight (kg) | 178 | 178 |
| Power/weight ratio | 0.082 | 0.082 |
| Overall height (mm) | 1,050 | 1,050 |
| Overall length (mm) | 2,190 | 2,190 |
| Overall width (mm) | 710 | 710 |
| Performance | ||
| Top speed (km/h) | 137 | 137 |
| Fuel capacity (l) | 13.5 | 13.5 |
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