Difference between revisions of "BMW R45"

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Revision as of 02:46, 28 June 2019

R45.jpg
BMW R45
Manufacturer
BMW
Also called R45 (reduced effect), R 45 (reduced effect), R 45
Production 1977 - 1985
Class Standard
Engine
453cc air-cooled, four-stroke, boxer twin cylinder, 2 valves per cylinder
Bore / Stroke 71.1mm x 71.1mm
Compression ratio 8.2:1
Top Speed 95 mph (141 km/h)[1]
Horsepower 26.95 HP (20.1 KW) @ 6500RPM
Torque 28.03 ft/lbs (38.0 Nm) @ 5500RPM
Transmission Gear box: 5-speed, manual

Final Drive: shaft

Clutch: wet multi-disc, manual
Suspension Front: telescopic fork
Rear: dual shocks
Brakes Front: single disc
Rear: drum
Front Tire 1.85 - B18
Rear Tire 2.50 - B18
Weight 185.0 kg (wet)
Oil Filter Fram CH6060
Fuel Capacity 5.81 Gallon (22.00 Liters)
Related BMW R65
Manuals Service Manual


The BMW R 45 was a air-cooled, four-stroke, boxer twin cylinder, 2 valves per cylinder Naked motorcycle produced by BMW between 1977 and 1985. It could reach a top speed of 88 mph (141 km/h). Max torque was 28.03 ft/lbs (38.0 Nm) @ 5500 RPM. Claimed horsepower was 26.95 HP (20.1 KW) @ 6500 RPM.

Overview

BMW extended its range of horizontally opposed twins in the late 1970s with the introduction of the R45 and R65. Looking very much like scaled down versions of BMW's larger models, the duo, which shared identical cycle parts, featured sharper, more modern styling while both weight and overall dimensions were reduced. For the German market, the 473cc R45 came with a reduced power output of 27bhp (to qualify for favorable insurance) while versions sold elsewhere had 35bhp on tap. Tested by Bike magazine in 1979, the R45 recorded a top speed of 95mph (154km/h) while returning an overall fuel consumption of 56.2mpg (5.0litres/100km). Few changes were made to these smaller twins before production ceased in 1985.

Engine

The engine was a air cooled air-cooled, four-stroke, boxer twin cylinder, 2 valves per cylinder. A 71.1mm bore x 71.1mm stroke result in a displacement of just 453.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).

Drive

The bike has a 5-speed, manual transmission. Power was moderated via the wet multi-disc, manual.

Chassis

It came with a 1.85 - B18 front tire and a 2.50 - B18 rear tire. Stopping was achieved via single disc in the front and a drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a dual shocks. The R 45 was fitted with a 5.81 Gallon (22.00 Liters) fuel tank.

1977 BMW R 45

The 1978 MY BMW R 45 has, at its heart, an air-cooled, four-stroke, 453cc, boxer twin cylinder powerplant paired to a five-speed manual transmission, and can reach a maximum power output of 27 horsepower and 38 Nm of torque. Standard fittings for this half-liter naked include a front disc brake, a drum braking system in the rear, laced wheels, a chromed, dual exhaust system, a small, round headlight, an analogue intrumentation panel, a dual seat, a blacked out frame and a suspension system composed of a telescopic fork in the front and dual shocks in the rear.


1979 BMW R 45

The 1979 MY BMW R 45 boasts features such as a front disc brake, a drum braking system in the rear, laced wheels, a chromed, dual exhaust system, a small, round headlight, an analogue intrumentation panel, a dual seat, a blacked out frame and a suspension system composed of a telescopic fork in the front and dual shocks in the rear.

In addition, it can reach a maximum power output of 27 horsepower and 38 Nm of torque from its air-cooled, four-stroke, 453cc, boxer engine.


1980 BMW R 45

The 1980 MY BMW R 45 is an agile and light machine that is sure to fit the needs for a wide variety of riders. It's air-cooled, four-stroke, 453cc, boxer twin cylinder engine is mated to a five-speed manual transmission and can produce a claimed 27 hp and 38 Nm of torque. Also, it comes with features such as a front disc brake, a drum braking system in the rear, laced wheels, a chromed, dual exhaust system, a small, round headlight, an analogue intrumentation panel, a dual seat, a blacked out frame and a suspension system composed of a telescopic fork in the front and dual shocks in the rear.


1981 BMW R 45

1981 BMW R 45 1981 BMW R 45 1981 BMW R 45

The 1981 MY BMW R 45 sports an air-cooled, four-stroke, 453cc, boxer twin cylinder powerhouse paired to a five-speed manual transmission that reaches a maximum power output of 27 horsepower and 38 Nm of torque. Standard fittings include a front disc brake, a drum braking system in the rear, laced wheels, a chromed, dual exhaust system, a small, round headlight, an analogue intrumentation panel, a dual seat, a blacked out frame and a suspension system composed of a telescopic fork in the front and dual shocks in the rear.


1982 BMW R 45

The 1982 MY BMW R 45 has, at its heart, an air-cooled, four-stroke, 453cc, boxer twin cylinder powerhouse paired to a five-speed manual transmission that can reach a maximum power output of 27 horsepower and 38 Nm of torque.

This half-liter was designed to fit the needs for a wide variety of riders, from the novice to the seasoned ones, and had standard features such as a telescopic front fork, dual shocks as a rear suspension, a small, round headlamp, an analogue instrument cluster, laced wheels, a front disc brake coupled to a rear drum, a dual seat and a dual exhaust system.


1983 BMW R 45

The 1983 MY BMW R 45 is the smallest-displacement machine from the House of Munich, but that doesn't make it any less fun. It comes with features such as a telescopic front fork, dual shocks as a rear suspension, a small, round headlamp, an analogue instrument cluster, laced wheels, a front disc brake coupled to a rear drum, a dual seat and a dual exhaust system. In the engine department it sports an air-cooled, four-stroke, 453cc, boxer twin cylinder powerplant mated to a five-speed manual transmission that produces a claimed 27 hp and 38 Nm of torque.


1984 BMW R 45

The 1984 MY BMW R 45 is powered by an air-cooled, four-stroke, 453cc, boxer twin cylinder engine paired to a five-speed manual transmission that produces 38 Nm of torque and 27 horsepower. Standard fittings include a telescopic front fork, dual shocks as a rear suspension, a small, round headlamp, an analogue instrument cluster, laced wheels, a front disc brake coupled to a rear drum, a dual seat and a dual exhaust system.


1985 BMW R 45

1985 BMW R 45 1985 BMW R 45

The 1985 MY BMW R 45 is a light and agile machine from the House of Munich, and comes with a telescopic front fork, dual shocks as a rear suspension, a small, round headlamp, an analogue instrument cluster, laced wheels, a front disc brake coupled to a rear drum, a dual seat and a dual exhaust system.


In Media

References

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