Start of Production

1928

Click to View

End of Production

1929

Numbers Produced

794

Price

2,100 RM

Engine

Internal Designation

M 60

Motor Type

Four-stroke two cylinder flat twin

Bore x Stroke

83 x 68 mm (3.26 x 2.67 in)

Displacement

735 cc

Max Power

24 hp at 4,000 rpm

Compression Ratio

6.2 : 1

Valves

OHV

Carburation System

1 carburettor, Type BMW Spezial 2 valve 24 mm

Engine Lubricating System

Forced feed lubrication

Oil Pump

Gear pump

Power Transmission

Clutch

Single plate, dry - two plates from engine No. 75845

Number of Gears

3

Shifting

Manual

Gearbox Ratios

2.83 / 1.55 / 1.08

Rear Wheel Ratio

1 : 4.07 (1 : 4.75 with sidecar)

Bevel/Crownwheel

14 / 57 teeth (12 / 57 with sidecar)

Electrical System

Ignition System

Bosch high voltage magneto ignition

Generator

Bosch magneto generator on request

Spark Plugs

Bosch W 175 or W200

Chassis

Designation

F56

Frame

Twin loop steel tubular frame

Front wheel suspension

Plate spring, 6 laminae

Rear wheel suspension

Rigid

Wheel rims

Deep bed 19 x 3 or 21 x 2.5

Tyres, Front

26 x 3.5 on 19 x 3 or 27 x 2.75 on 21 x 2.5

Tyres, Rear

26 x 3.5 on 19 x 3 or 27 x 2.75 on 21 x 2.5

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 3.14 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

5 litres 100 Km approx. / 56 mpg / 47 mpg US

Oil Consumption

1 - 2 litres per 1,000 Km approx

Top Speed

120 Kph / 74 mph