BMW F 650GS (2002) vs AJS 7R (1952) vs Beta RS 350 (2012)
Comparison technical specifications
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| Make: | BMW | AJS | Beta |
| Model: | F 650GS | 7R | RS 350 |
| Years: | 2002 | 1952 | 2012 |
| Engine: | Four stroke, single cylinder, DOHC, 4 valves per cylinder | Single cylinder, 4-stroke, OHC Triple-Camshaft | Four stroke, single cylinder |
| Capacity: | 652 cc / 39.8 cub. in. | 349.2 cc / 21.3 cub in | 349 cc / 21.3 cu in |
| Bore x Stroke: | 100 x 83mm | 75.5 x 78 mm | 88 x 57.4 mm |
| Compression Ratio: | 11.5:1 | 12.2:1 | 12.1:1 |
| Induction: | Fuel induction | Carburetor, 1 3/16 Amal | Keihin FCR-MX Ø 39 mm |
| Ignition: | Capacitor Discharge Ignition system | Lucas magneto | DC-CDI with variable ignition timing, Kokusan. |
| Starting: | Electric | Kick | Electric and kick |
| Clutch: | Multiple-disc clutch in oil bath, mechanically operated | Dry, multiplate Ferodo | Wet multi-disc |
| Transmission: | 5 Speed | 4-Speed | 6 Speed |
| Final Drive: | Chain | Chain | O-ring chain, DID |
| Frame: | Bridge-type steel section frame with bolted-on rear section | Tubular double cradle | Molybdenum steel with double cradle split above exhaust port. Air filter access from the side |
| Front Suspension: | 41mm Telescopic fork with stabilizer bridge | Telescopic fork | Marzocchi USD fork, Ø 45 mm, adjustable compression and rebound, TFX technology |
| Rear Suspension: | Spring setting and rebound stage damping continuously adjustable | Dual shocks | Sachs shock w/adjustable rebound and hi/low speed compression |
| Front Brakes: | Single ∅300mm disc, 2 piston caliper | Drum | Single Ø 260 mm floating disc, 2 piston caliper |
| Rear Brakes: | Single ∅240mm disc, 1 piston caliper | Drum | Single Ø 240 mm disc, 1 piston caliper |
| Dry Weight: | 176 kg / 388 lbs. | 129 kg / 285 lbs | 108 kg / 240 lbs |
| Fuel Capacity: | 17.3 Litres / 4.6 US gal. | 22.7 L / 6.0 US gal | 7.9 L / 2.1 US gal |