BMW F 650GS (2002) vs AJS 7R (1952)
Comparison technical specifications
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| Make: | BMW | AJS |
| Model: | F 650GS | 7R |
| Years: | 2002 | 1952 |
| Engine: | Four stroke, single cylinder, DOHC, 4 valves per cylinder | Single cylinder, 4-stroke, OHC Triple-Camshaft |
| Capacity: | 652 cc / 39.8 cub. in. | 349.2 cc / 21.3 cub in |
| Bore x Stroke: | 100 x 83mm | 75.5 x 78 mm |
| Compression Ratio: | 11.5:1 | 12.2:1 |
| Induction: | Fuel induction | Carburetor, 1 3/16 Amal |
| Ignition: | Capacitor Discharge Ignition system | Lucas magneto |
| Starting: | Electric | Kick |
| Max Power: | 37.3 kW / 50 hp @ 6800 rpm | 29.8 kW / 40 hp @ 8000 rpm |
| Clutch: | Multiple-disc clutch in oil bath, mechanically operated | Dry, multiplate Ferodo |
| Transmission: | 5 Speed | 4-Speed |
| Final Drive: | Chain | Chain |
| Frame: | Bridge-type steel section frame with bolted-on rear section | Tubular double cradle |
| Front Suspension: | 41mm Telescopic fork with stabilizer bridge | Telescopic fork |
| Rear Suspension: | Spring setting and rebound stage damping continuously adjustable | Dual shocks |
| Front Brakes: | Single ∅300mm disc, 2 piston caliper | Drum |
| Rear Brakes: | Single ∅240mm disc, 1 piston caliper | Drum |
| Wheels: | Wire spoke wheels | Steel, wire spokes |
| Dry Weight: | 176 kg / 388 lbs. | 129 kg / 285 lbs |
| Fuel Capacity: | 17.3 Litres / 4.6 US gal. | 22.7 L / 6.0 US gal |
| Top Speed: | 183.4 km/h / 114 mph | 193 km/h / 120 mph |