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BMW R6 Specifications

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Start of Production

1937

BMW R6

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End of Production

1937

Numbers Produced

1,850

Price

1,375 RM

Engine

 

Internal Designation

261

Motor Type

Four-stroke two cylinder flat twin

Bore x Stroke

70 x 78 mm2.75 x 3.07 in)

Displacement

600 cc

Max Power

18 hp at 4,500 rpm

Compression Ratio

6.0 : 1

Valves

SV

Carburation System

2 x carburettor type Amal M 75/426/S

Engine Lubricating System

Forced feed lubrication

Oil Pump

Gear pump

Power Transmission

 

Clutch

Single plate, dry

Number of Gears

4

Shifting

Foot shifting (+ auxiliary manual lever on the gear block)

Gearbox Ratios

3.6 / 2.28 / 1.7 / 1.3

Rear Wheel Ratio

1 : 3.89 (1 : 4.62 with sidecar)

Bevel/Crownwheel

9 / 35 teeth (8 / 37 with sidecar)

Electrical System

 

Ignition System

Battery ignition

Generator

Bosch RD 45/6 2800 RS 15

Spark Plugs

Bosch W 175 T1

Chassis

 

Designation

250

Frame

Twin loop pressed steel frame

Front wheel suspension

Telescopic fork

Rear wheel suspension

Rigid

Wheel rims

3 x 19

Tyres, Front

3.5 x 19

Tyres, Rear

3.5 x 19

Brakes, Front

Drum brake 200 mm / 7.87 in diameter

Brakes, Rear

Drum brake 200 mm / 7.87 in diameter

Dimensions/Weights

 

Length x Width x Height

2130 x 800 x 950 mm (83.85 x 31.49 x 37.40 in)

Wheel Base

1400 mm / 55.11 in

Fuel Tank Capacity

15 litres / 3.29 gal / 3.96 gal US

Unladen Weight with Full Tank

175 Kg / 3.85 lb

Load Rating

210 Kg / 462 lb

Fuel Consumption

Approx. 3.5 litres per 100 Km / 80 mpg / 67 mpg US

Oil Consumption

Approx. 1 litre per 1,000 Km

Top Speed

125 Kph / 77 mph

 

 

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