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BMW Motorcycles

New Model Info

Pre-Owned

Community

Production

Begin of the Production		1923

End of the Production		1926

Numbers Produced		3.090

Price		2.200,- RM


Engine

Internal Designation		M 2 B 33

Motor Type		four-stroke two-cylinder flat-twin

Bore x Stroke		68 x 68 mm

Displacement		494 ccm

Max Power		8,5 hp at 3200 rpm

Compression Ratio		5.0 : 1

Valves		sv

Carburetion System		1 x carburettor, type BMW Spezial 22 mm

Engine Lubricating System		forced-feed lubrication

Oil Pump		gear pump


Power transmission

Clutch		single-plate, dry

Number of Gears		3

Shifting		manual

Gearbox Ratios		2.27 / 1.50 / 1.08

Rear Wheel Ratio		1 : 4.41 (with sidecar 1 : 5.36)

Bevel / Crownwheel		17 / 75 teeth (with sidecar 14 / 75 teeth)


Electrical system

Ignition System		Bosch magneto ignition

Generator		magneto generator on request

Spark Plugs		Bosch W 145

Chassis

Designation		R 32

Frame		twin-loop tubular frame

Front Wheel Suspension		twin cantilever spring

Rear Wheel Suspension		rigid

Wheel Rims		26 x 2.5

Tyres front		26 x 3

Tyres rear		26 x 3

Brakes front		drum brake Ø 150 mm (not for 1st series)

Brakes rear		block brake


Dimensions / Weights

Length x Width x Height		2100 x 800 x 950 mm

Wheel Base		1380 mm

Fuel Tank Capacity		14 l

Unladen Weight, Full Tank		122 kg (with original sidecar 184 kg)

Fuel Consumption		approx. 3 l/100 km

Oil Consumption		approx. 2,5 l/1000 km

Top Speed		95 - 100 kph