BMW R5: history, specs, pictures

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An important step forward in the development of BMW's long-running flat-twin occurred in 1936 with the introduction of the 494cc BMW R5. Prior to that the BMW engine had been recognisably related to the first of its type, the 1923 R32, and like those of its (494cc) predecessors, the R5's engine dimensions were 'square' at 68x68mm bore/stroke. However, the overhead-valve R5 engine broke new ground by adopting two chain-driven camshafts, a move that permitted shorter pushrods and higher revs. Maximum power increased to 24bhp at 5,800rpm while the top speed was an impressive 87mph. Factory records show that this particular R5 was delivered new to Hilscher in Breslau, Germany. The machine displays a total of 24,654 kilometres on the odometer.

BMW R5
Manufacturer
BMW
Production 1936 - 1937
Engine
two cylinder boxer, four-stroke
Bore / Stroke 68.0mm x 68.0mm
Top Speed 87 mph (140 km/h)
Horsepower 23.6 HP (17.6 KW) @ 5500RPM
Fuel System carburetor. amal
Ignition battery
Battery 6.7:1
Transmission Gear box: 4-speed

Final Drive: shaft drive (cardan)

Clutch: dry-single plate
Suspension Front: telescopic fork
Rear: rigid
Brakes Front: expanding brake (drum brake). single
Rear: expanding brake (drum brake)
Front Tire 3.50-19.00
Rear Tire 3.50-19.00
Wheelbase 55.12 inches (1400 mm)
Length 83.86 inches (2130 mm)
Width 31.5 inches (800 mm)
Height 37.4 inches (950 mm)
Weight 165.0 kg (wet)
Fuel Capacity 3.96 Gallon (15.00 Liters)
Fuel Consumption 4.50 liters/100 km (22.2 km/l or 52.27 mpg)
Manuals Service Manual


The BMW R5 was a two cylinder boxer, four-stroke standard produced by BMW between 1936 and 1937. It could reach a top speed of 87 mph (140 km/h). Claimed horsepower was 23.6 HP (17.6 KW) @ 5500 RPM.

Engine[edit]

The engine was a air cooled two cylinder boxer, four-stroke. A 68.0mm bore x 68.0mm stroke result in a displacement of just 494.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).

Drive[edit]

The bike has a 4-speed transmission. Power was moderated via the dry-single plate.

Chassis[edit]

It came with a 3.50-19.00 front tire and a 3.50-19.00 rear tire. Stopping was achieved via expanding brake (drum brake). single in the front and a expanding brake (drum brake) in the rear. The front suspension was a telescopic fork while the rear was equipped with a rigid. The R5 was fitted with a 3.96 Gallon (15.00 Liters) fuel tank. The wheelbase was 55.12 inches (1400 mm) long.