Comparison of AJS Model 20 500 1954 and AJS Model 30 600 1956 [S]ave
| Attribute |  AJS Model 30 600 1956 × |  AJS Model 20 500 1954 × |
|---|---|---|
| General | ||
| Production from (year) | 1956 | 1954 |
| Make | AJS | AJS |
| Model | AJS Model 30 600 | AJS Model 20 500 |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | V2, four-stroke | Twin, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 593 | 498 |
| Power (kw) | 24.1 | 14.6 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 72 | 66 |
| Stroke (mm) | 72.8 | 72.8 |
| Gearbox | 4-speed | 4-speed |
| Fuel control | Overhead Valves (OHV) | - |
| Ignition | - | Magneto |
| Clutch | Dry multiplate | Wet multiplate |
| Compression | - | 7.0:1 |
| Chassis | ||
| Front suspension | Hydraulic 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 | 3.50-19 | 3.25-19 |
| Rear tyre | 3.50-19 | 3.25-19 |
| Seat | Dual | Dual |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Dry weight (kg) | 178 | 178 |
| Power/weight ratio | 0.1354 | 0.082 |
| Overall height (mm) | 1,040 | 1,050 |
| Overall length (mm) | 2,150 | 2,190 |
| Overall width (mm) | 700 | 710 |
| Performance | ||
| Top speed (km/h) | 152 | 137 |
| Fuel capacity (l) | 16 | 13.5 |
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