1928 BMW R52

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1928 BMW R52

1928 BMW R52 - Classic Bmw Motorcycle

1928 BMW R52 Specification :

Start of Production	1928
End of Production	1929
Numbers Produced	4,377
Price	1,510 RM
Engine
Internal Designation		M 57
Motor Type		Four-stroke two cylinder flat twin
Bore x Stroke		63 x 78 mm (2.48 x 3.07 in)
Displacement		486 cc
Max Power		12 hp at 3,400 rpm
Compression Ratio		5.0 : 1
Valves		SV
Carburation System		1 carburettor, Type BMW Spezial 2 valve 22 mm
Engine Lubricating System		Forced feed lubrication
Oil Pump		Gear pump
Power Transmission
Clutch		Single plate, dry - two plates from engine No. 50761
Number of Gears		3
Shifting		Manual
Gearbox Ratios		2.83 / 1.55 / 1.08
Rear Wheel Ratio		1 : 4.38 or 1 : 4.75 (1 : 5.7 with sidecar)
Bevel/Crownwheel		13 / 57 teeth or12 / 57 (10 / 57 with sidecar)
Electrical System
Ignition System		Bosch high voltage magneto ignition
Generator		Bosch magneto generator on request
Spark Plugs		Bosch W 175
Chassis
Designation		F56
Frame		Twin loop steel tubular frame
Front wheel suspension		Plate spring, 6 laminae
Rear wheel suspension		Rigid
Wheel rims		Deep bed 19x 3
Tyres, Front		26 x 3.5 low pressure or 26 x 3.5 high pressure
Tyres, Rear		26 x 3.5 low pressure or 26 x 3.5 high pressure
Brakes, Front		Drum brake 200 mm / 7.87 in diameter
Brakes, Rear		External shoe brake at the gearing on Cardan shaft
Dimensions/Weights
Length x Width x Height		2100 x 800 x 950 mm (82.67 x 31.49 x 37.40 in)
Wheel Base		1400 mm / 55.11 in
Fuel Tank Capacity		12.5 litres / 2.74 gal / 3.30 gal US
Unladen Weight with Full Tank		152 Kg / 334 lb
Load Rating		210 Kg / 462 lb
Fuel Consumption		3.5 litres 100 Km approx / 80 mpg / 67 mpg US
Oil Consumption		1 - 2 litres per 1,000 Km approx.
Top Speed		100 Kph / 62 mph