BMW R 100RT (1978-80) vs BMW R 100/7 (1978-10)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | R 100RT | R 100/7 |
| Years: | 1978-80 | 1978-10 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder |
| Capacity: | 980 cc / 59.8 cub in. | 980 cc / 59.8 cu in. |
| Bore x Stroke: | 94 x 70.6 mm | 94 x 70.6 mm |
| Cooling System: | Air cooled | Air cooled |
| Compression Ratio: | 9.5:1 | 9.1:1 |
| Induction: | 2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106 | 2 x 36mm Bing V94 carburetors |
| Ignition: | Battery ignition | Battery ignition |
| Alternator: | Bosch 12V/240 W | Bosch 12V/240 W |
| Starting: | Electric | Electric |
| Max Power: | 51 kW / 70 hp @ 7000 rpm | 44.1 KW / 60 hp @ 7000 rpm |
| Max Torque: | 76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm | 71.5 Nm / 7.29 kgf-m / 53 ft-lb @ 6500 rpm |
| Clutch: | Dry single plate, with diaphragm spring | Single dry plate |
| Transmission: | 5 Speed | 5 Speed |
| Gear Ratio: | 1st 4.4 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50 : 1 | 1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1 |
| Gear Ratio Sport Version: | 1st 3.38 / 2nd 2.43 / 3rd 1.93 / 4th 1.67 / 5th 1.50 | 1st 3.38 / 2nd 2.43 / 3rd 1.93 / 4th 1.67 / 5th 1.50:1 |
| Bevel / Crown wheel: | 11 / 32 teeth or 10 / 32 teeth | 11 / 34 teeth or 10 / 32 teeth |
| Final Drive: | Shaft | Shaft |
| Frame: | Double sown tubs, dual cradle | Double sown tubs, dual cradle |
| Front Suspension: | Telescopic fork with hydraulic shock absorber. | Telescopic fork with hydraulic shock absorber. |
| Front Wheel Travel: | 200 mm / 7.8 in | 200 mm / 7.8 in |
| Rear Suspension: | Long swinging arm with adjustable strut. | Long swinging arm with adjustable strut. |
| Rear Wheel Travel: | 125 mm / 4.9 in | 125 mm / 4.9 in |
| Front Brakes: | 2 x ∅260mm discs 2 piston calipers | Single ∅260mm disc |
| Rear Brakes: | Simplex ∅200 mm drum | ∅200mm Drum |
| Front Wheel: | 1.85 B 19 | 1.85 - B19 |
| Rear Wheel: | 2.75 C 18 | 2.15 - B18 |
| Front Tyre: | 3.25 H-19 | 3.25 - H19 |
| Rear Tyre: | 4.00 H-18 | 4.00 - H18 |
| Wheelbase: | 1465 mm / 57.67 in | 1465 mm / 57.67 in |
| Seat Height: | 820 mm / 32.3 in | 810 mm / 31.9 in |
| Ground Clearance: | 165 mm / 6.49 in | 165 mm / 6.49 in |
| Wet Weight: | 234 kg / 515 lbs | 215 kg / 474 lbs |
| Fuel Capacity: | 24 Litres / 6.3 US gal | 24 L / 6.3 US gal |
| Top Speed: | 203 km/h / 126 mph | 188 km/h / 117 mph |