BMW R 1100GS (1995) vs BMW R 66 (1938-41)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | R 1100GS | R 66 |
| Years: | 1995 | 1938-41 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 4 valves per cylinder | Four stroke, single cylinder vertical, SV |
| Capacity: | 1084 cc / 66.1 cu in | 595 cc / 36.3 cu in |
| Bore x Stroke: | 99 x 70.5 mm | 69.8 x 78 mm |
| Cooling System: | Air/oil-cooled | Air cooled |
| Compression Ratio: | 10.3:1 | 6.8:1 |
| Induction: | Bosch Motronic 2.2 with fuel cutoff when coasting | 1 x Amal 6/420 S carburetor |
| Ignition: | Electronic MA 2.2 controlled by Bosch Motronic | Battery ignition |
| Starting: | Electric | Kick |
| Max Power: | 59 kW / 80 hp @ 6750 rpm | 22.4 kW / 30 hp @ 5300 rpm |
| Clutch: | ∅180mm Dry single plate with diaphram spring | Single plate, dry |
| Transmission: | 5 Speed | 4 Speed |
| Final Drive: | Shaft | Shaft |
| Gear Ratio: | 1st 4.16 / 2nd 2.91 / 3rd 2.13 / 4th 1.74 / 5th 1.45 | 1st 3.6 / 2nd 2.28 / 3rd 1. 7 / 4th 1.3 |
| Frame: | Three piece (front and rear sections with load-bearing engine) | Twin loop steel tubular frame |
| Front Suspension: | BMW Telelever Single gas-filled shock absorber with progressive coil spring, Preload adjustment (five steps) | Telescopic fork |
| 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) | Telescopic suspension |
| Front Brakes: | 2 x ∅297mm Discs, 3 piston calipers | ∅200mm Drum |
| Rear Brakes: | Single ∅250mm disc, 3 piston caliper | ∅200mm Drum |
| Front Tyre: | 110/80 R19 | 3.50 -19 |
| Rear Tyre: | 150/70 R17 | 3.50 -19 |
| Wet Weight: | 240 kg / 549 lbs | 187 kg / 411 lbs |
| Fuel Capacity: | 24 Liters / US 6.3 gal | 14 liters / 3.6 US gal |