Comparison of AJS Model 31 650 Swift 1961 and Metisse Desert Racer 2010 [S]ave
| Attribute |  Metisse Desert Racer 2010 × |  AJS Model 31 650 Swift 1961 × |
|---|---|---|
| General | ||
| Production from (year) | 2010 | 1961 |
| Make | Metisse | AJS |
| Model | Metisse Desert Racer | AJS Model 31 650 Swift |
| Category | Classic | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Twin, four-stroke |
| Fuel system | Carburettor. Amal | Carburettor |
| Displacement (cm³) | 649 | 646 |
| Power (kw) | 34.3 | 22.9 |
| Cooling system | - | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 71 | 72 |
| Stroke (mm) | 82 | 79.3 |
| Gearbox | - | 4-speed |
| Fuel control | - | Overhead Valves (OHV) |
| Ignition | - | Bobine |
| Clutch | - | Wet multiplate |
| Compression | 9.0:1 | 7.5:1 |
| Exhaust system | Period chromed exhaust pipes | - |
| Chassis | ||
| Front suspension | Cerani fork | Hydraulic telescopic |
| Rear suspension | BSA | Twin shock Girling |
| Front brakes | - | Expanding brake (drum brake) |
| Rear brakes | - | Expanding brake (drum brake) |
| Frame type | Mark III chrome moly, nickel plated, oil-bearing frame with oil filter included | Doble cradle |
| Front tyre | 100/110-18 | 3.25-19 |
| Rear tyre | 2.75-21 | 3.25-19 |
| Seat | - | Dual |
| Wheels | - | Spoked |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 135 | 176 |
| Power/weight ratio | 0.2541 | 0.1301 |
| Performance | ||
| Fuel capacity (l) | - | 16 |
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