BMW R 1100GS (1996) vs BMW K 1300 S (2014) vs BMW R 39 (1925-27)
Comparison technical specifications
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| Make: | BMW | BMW | BMW |
| Model: | R 1100GS | K 1300 S | R 39 |
| Years: | 1996 | 2014 | 1925-27 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder vertical, OHV |
| Capacity: | 1084 cc / 66.1 cu in | 1298 cc / 79.2 cu in. | 247 cc / 15.1 cu in. |
| Cooling System: | Air/oil-cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 10.3:1 | 13.0:1 | 6.0:1 |
| Induction: | Bosch Motronic 2.2 with fuel cutoff when coasting | Electronic fuel injection, Digital Motor Electronics with integrated knock control (BMS-K) | 1 x BMW Spezial ∅20 mm |
| Ignition: | Electronic MA 2.2 controlled by Bosch Motronic | Digital CDI | Bosch magneto generator type G 1.8V/15W |
| Starting: | Electric | Electric | Kick |
| Max Power: | 59 kW / 80 hp @ 6750 rpm | 127 kW / 173 hp @ 9250 rpm | 4.8 kW / 6.5 hp @ 4000 rpm |
| Clutch: | ∅180mm Dry single plate with diaphram spring | Multiple-plate clutch in oil bath, hydraulically operated | Single plate, dry |
| Transmission: | 5 Speed | 6 Speed | 3 Speed |
| Final Drive: | Shaft | Shaft | Shaft |
| Frame: | Three piece (front and rear sections with load-bearing engine) | Bridge frame, aluminium, load-bearing engine | Twin loop tubular frame |
| Front Suspension: | BMW Telelever Single gas-filled shock absorber with progressive coil spring, Preload adjustment (five steps) | BMW Motorrad Duolever, central spring strut, Paralever; central spring strut with lever system | Plate spring, 4 laminae |
| Rear Suspension: | BMW Paralever (single-sided swinging arm) Single gas-filled shock absorber with coil spring, Preload adjustment (continuously adjustable by handwheel), Rebound damping (continuously adjustable by screw) | Cast aluminium single swing arm with BMW Motorrad, spring pre-tension with infinite hydraulic adjustment | Rigid, spring loaded saddle |
| Front Brakes: | 2 x ∅297mm Discs, 3 piston calipers | 2x 320mm discs, 4 piston calipers | Internal shoe drum brake ∅150 mm / ∅5.90 in diameter |
| Rear Brakes: | Single ∅250mm disc, 3 piston caliper | Single 265mm disc, 2 piston caliper | External shoe brake at the gearing on Cardan shaft |
| Front Tyre: | 110/80 R19 | 120/70 ZR17 | 27 x 3.5" balloon or with 26 x 3.0" high pressure tyres |
| Rear Tyre: | 150/70 R17 | 190/55 ZR17 | 27 x 3.5" balloon or with 26 x 3.0" high pressure tyres |
| Wet Weight: | 240 kg / 549 lbs | 254 kg / 550 lbs | 110 kg / 242 lbs |
| Fuel Capacity: | 24 Liters / US 6.3 gal | 19 Litres / 5.0 US gal | 10 liters / 2.6 US gal |