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