BMW R100S: review, history, specs
Manufacturer | BMW |
---|---|
Also called | R 100 S |
Production | 1976 - 1980 |
Predecessor | BMW R90S |
Class | Standard |
Engine | air-cooled, four-stroke, boxer two cylinder, 2 valves per cylidner |
Bore / Stroke | 94.0mm x 94.0mm |
Compression ratio | 9.5:1 |
Top speed | 117 mph (189 km/h) |
Horse Power | 70.0 HP (52.2 KW) @ 7000RPM |
Torque | 56.06 ft/lbs (76.0 Nm) @ 6000RPM |
Battery | 9.5:1 |
Transmission | Gear box: 5-speed, manual Final Drive: shaft |
Suspension | Front: hydraulic telescopic fork Rear: dual adjustable shocks |
Brakes | Front: dual 260mm discs, 2-piston calipers Rear: 260mm drum |
Front Tire | 3.25-19 |
Rear Tire | 4.00-18 |
Wheelbase | 57.72 inches (1466 mm) |
Dimensions | L 83.9 inches (2131 mm) W 29.41 inches (747 mm) |
Seat height | 32.28 inches (820 mm) |
Weight | (dry), 220.0 kg (wet) |
Fuel capacity | 6.34 Gallon (24.00 Liters) |
Related | BMW R100T BMW R100RS BMW R90S |
Manuals | Service Manual |
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The BMW R 100 S was a air-cooled, four-stroke, boxer two cylinder, 2 valves per cylidner Naked motorcycle produced by BMW between 1976 and 1980. It could reach a top speed of 117 mph (189 km/h). Max torque was 56.06 ft/lbs (76.0 Nm) @ 6000 RPM. Claimed horsepower was 70.0 HP (52.2 KW) @ 7000 RPM.
History
Just a few years after introducing the BMW R90/6 and BMW R90S, BMW upped the capacity of its range-topping flat-twins to 980cc for the 1977 season in the form of the '/7' series. The latter comprised the R100/7 tourer, which used the 60bhp version of the new engine, while the cockpit-faired R100S sportster and the fully faired R100RS superbike came with 70bhp on tap. Within a couple of years the R100/7 'naked' had been re-titled R100T and gained an extra five horsepower, while the others - together with the new R100RT super-tourer - continued to use the 70bhp engine.
Engine
The engine was a air cooled air-cooled, four-stroke, boxer two cylinder, 2 valves per cylidner. A 94.0mm bore x 94.0mm stroke result in a displacement of just 980.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).
Drive
The bike has a 5-speed, manual transmission. Power was moderated via the dry, single plate, diaphragm spring.
Chassis
It came with a 3.25-19 front tire and a 4.00-18 rear tire. Stopping was achieved via dual 260mm discs, 2-piston calipers in the front and a 260mm drum in the rear. The front suspension was a hydraulic telescopic fork while the rear was equipped with a dual adjustable shocks. The R 100 S was fitted with a 6.34 Gallon (24.00 Liters) fuel tank. The wheelbase was 57.72 inches (1466 mm) long.
1977
- Spark Plug: NGK BP7ES
1978
- Bike pictured above has Rare Heinrich 11 gallon tank.
- 1000 cc Twin engine
- 5-speed transmission
- Front Dual Disc Brakes
1980
1992
1976 BMW R 100 S
The 1976 MY BMW R 100 S has, at its heart, an air-cooled, four-stroke, 980cc, boxer twin cylinder powerhouse paired to a five-speed manual transmission that can produce a claimed 70 horsepower and 76 Nm of torque.
Standard fittings include a hydraulic telescopic fork as a front suspension, dual adjustable shocks in the rear, a dual seat, pillion grab rails, a small, nose-fairing with a windshield, an analogue instrumentation panel, dual front disc brakes coupled to a rear drum brake, die-cast aluminium wheels and a chromed, dual exhaust system.
1977 BMW R 100 S
The 1977 MY BMW R 100 S is a liter-class naked machine, that is sure to fit the taste for those riders who want superior performance. It comes with a hydraulic telescopic fork as a front suspension, dual adjustable shocks in the rear, a dual seat, pillion grab rails, a small, nose-fairing with a windshield, an analogue instrumentation panel, dual front disc brakes coupled to a rear drum brake, die-cast aluminium wheels and a chromed, dual exhaust system.
In the engine department, it sports a four-stroke, air-cooled, 980cc, two cylinder boxer powerplant mated to a five-speed manual transmission and can reach a maximum power output of 70 horsepower and 76 Nm of torque.
1978 BMW R 100 S
The 1978 MY BMW R 100 S has been created by the German engineers for those riders who make zero compromises when it comes to performance. It boasts a maximum power output of 70 horsepower and 76 Nm of torque from its air-cooled, four-stroke, 980cc, boxer two cylinder engine paired to a five-speed manual transmission.
In addition, it comes standard with features such as a hydraulic telescopic fork as a front suspension, dual adjustable shocks in the rear, a dual seat, pillion grab rails, a small, nose-fairing with a windshield, an analogue instrumentation panel, dual front disc brakes coupled to a rear drum brake, die-cast aluminium wheels and a chromed, dual exhaust system.
1979 BMW R 100 S
The 1979 MY BMW R 100 S comes with standard fittings such as a hydraulic telescopic fork as a front suspension, dual adjustable shocks in the rear, a dual seat, pillion grab rails, a small, nose-fairing with a windshield, an analogue instrumentation panel, dual front disc brakes coupled to a rear drum brake, die-cast aluminium wheels and a chromed, dual exhaust system.
Also, a maximum power output of 70 horsepower and 76 Nm of torque is achieved by its four-stroke, air-cooled, 980cc, boxer opposed two cylinder powerplant that is paired to a five-speed manual transmission with a shaft final drive.
1980 BMW R 100 S
The House of Munich has designed and launched the 1980 MY BMW R 100 S for those riders who make zero-compromises when it comes to performance, but also want the sound and feel of a boxer engine. It has, at its heart, an air-cooled, four-stroke, 980cc, boxer twin cylinder powerplant paired to a five-speed manual transmission and can produce 70 horsepower and 76 Nm of torque.
Standard fittings include a hydraulic telescopic fork as a front suspension, dual adjustable shocks in the rear, a dual seat, pillion grab rails, a small, nose-fairing with a windshield, an analogue instrumentation panel, dual front disc brakes coupled to a rear drum brake, die-cast aluminium wheels and a chromed, dual exhaust system.
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