Start of Production

1929

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End of Production

1930

Numbers Produced

1,006 (All Series)

Price

2,200 RM

Engine

 

Internal Designation

M60

Motor Type

Four-stroke two cylinder flat twin

Bore x Stroke

83 x 68 mm (3.26 x 2.67 In)

Displacement

736 cc

Max Power

25 hp at 4,000 rpm

Compression Ratio

6.5 : 1

Valves

OHV

Carburation System

1 carburettor Type BMW Spezial 26 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

2.83 / 1.55 / 1.08

Rear Wheel Ratio

1 : 4.07 (1 : 5.18 or 1 : 4.75 with sidecar)

Bevel/Crownwheel

14 / 57 teeth (11 / 57 or 12 / 57 with sidecar)



Electrical System

 

Ignition System

Magneto Ignition

Generator

Bosch magneto generator D2L or magneto ignition FF2

Spark Plugs

Bosch W175 T1 or Bosch 200 G 24






Chassis

 

Designation

F66

Frame

Twin loop pressed steel frame

Front wheel suspension

plate spring, 9 laminae

Rear wheel suspension

Rigid

Wheel rims

26 x 3.5 safety rims

Tyres, Front

26 x 3.5 low pressure or 26 x 3.25 high pressure

Tyres, Rear

26 x 3.5 low pressure or 26 x 3.25 high pressure

Brakes, Front

Drum brake 200 mm / 7.87 in diameter

Brakes, Rear

Cardan brake, 37 mm / 1.45 in width




Dimensions/Weights

 

Length x Width x Height

2100 x 890 x 950 mm (82.67 x 35.03 x 37.40 in)

Wheel Base

1380 mm / 54.33 in

Fuel Tank Capacity

14 litres / 3.07 gal / 3.69 gal US

Unladen Weight with Full Tank

165 Kg / 363 lb

Load Rating

210 Kg / 462 lb

Fuel Consumption

Approx. 5 litres per 100 Km / 56 mpg / 47 mpg US

Oil Consumption

Approx. 1 -2 litres per 1,000 Km

Top Speed

120 Kph / 74 mph

Information kindly supplied by P.Hawksley

www.bmbikes.co.uk