The BMW R 100RS Motorsport Special Edition motorcycle is a four stroke, two cylinder horizontally opposed Boxer engine bike with a capacity of 980 cc. It has a compression ratio of 9.5:1 and is air-cooled with a wet sump lubrication system. The bike has 2 constant depression carburetors that use battery ignition and a Bosch 12V/240 W alternator, with an electric start. The engine can produce up to 51 kW / 70 hp of power at 7000 rpm and 76 Nm / 7.75 kgf-m / 56 ft-lb of torque at 6000 rpm. The clutch is a dry single plate with a diaphragm spring, and the transmission is a 5-speed with a gear ratio of 1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1. The bike has a sport version gear ratio of 1st 3.38 / 2nd 2.43 / 3rd 1.93 / 4th 1.67 / 5th 1.50. The rear wheel ratio is 1:2.91 or 1:3.00, with a bevel/crown wheel of 11/32 teeth or 10/32 teeth, and a final drive shaft. The bike’s frame is double-sown tubs, dual cradle, and the front suspension is telescopic fork with hydraulic shock absorber, while the rear suspension is a long swinging arm with an adjustable strut. The brakes consist of two 260mm discs with 2 piston calipers on the front and a Simplex 200mm drum on the rear. The bike has a wet weight of 230 kg / 506 lbs and a fuel capacity of 24 litres / 6.3 US gal, with an average fuel consumption of 4.8 L/100 km / 20.8 km/l / 49 US mpg. The standing 1/4 mile takes 13.9 sec / 157 km/h / 97.3 mph, and the top speed is 196 km/h / 121.5 mph.
Make Model: BMW R 100RS Motorsport Special Edition
Year: 1978
Engine: Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Capacity: 980 cc / 59.8 cub in.
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