BMW R20
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Start of Production
| 1937
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End of Production
| 1938
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Numbers Produced
| 5,000
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Price
| 725 RM
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Engine
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Internal Designation
| 220/1
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Motor Type
| Four-stroke single cylinder vertical
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Bore x Stroke
| 68 x 68 mm (2.67 x 2.67 in)
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Displacement
| 192 cc
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Max Power
| 8 hp at 5,400 rpm
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Compression Ratio
| 6.0 : 1
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Valves
| OHV
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Carburation System
| 1 x Amal push in carburettor M 74/428
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Engine Lubricating System
| Forced feed lubrication
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Oil Pump
| Gear pump
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Power Transmission
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Clutch
| Single plate, dry
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Number of Gears
| 3
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Shifting
| Foot switching
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Gearbox Ratios
| 4.55 / 2.58 / 1.64
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Rear Wheel Ratio
| 1 : 4.18
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Bevel/Crownwheel
| 11 / 46 teeth
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Electrical System
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Ignition System
| Battery ignition
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Generator
| Bosch 6V/50W
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Spark Plugs
| Bosch W175 T1 or Beru K175
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Chassis
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Designation
| 220/1
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Frame
| Twin loop frame, bolted
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Front wheel suspension
| Telescopic fork
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Rear wheel suspension
| Rigid
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Wheel rims
| 2.5 x 19 deep bed
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Tyres, Front
| 3 x 19
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Tyres, Rear
| 3 x 19
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Brakes, Front
| Drum brake 160 mm / 6.29 in diameter
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Brakes, Rear
| Drum brake 180 mm / 7.08 in diameter
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Dimensions / Weights
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Length x Width x Height
| 2000 x 800 x 920 mm (78.74 x 31.49 x 36.22 in)
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Wheel Base
| 1330 mm / 52.36 in
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Fuel Tank Capacity
| 12 litres / 2.63 gal / 3.17 gal US
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Unladen Weight with Full Tank
| 130 Kg / 286 lb
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Load Rating
| 200 Kg / 440 lb
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Fuel Consumption
| Approx. 2.75 litres per 100 Km / 102 mpg / 85 mpg US
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Oil Consumption
| Approx. 1 - 2 litres per 1,000 Km
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Top Speed
| 95 Kph / 59 mph
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