Start of Production |
1928 |
Click to View |
End
of Production |
1930 |
Numbers Produced |
1,005 |
Price |
1,850 RM |
Engine |
|
Internal Designation |
M 56 |
Motor Type |
Four-stroke two cylinder flat twin |
Bore x Stroke |
68 x 68 mm
(2.67 x 2.67 in) |
Displacement |
494
cc |
Max
Power |
18 hp
at 4,000 rpm |
Compression Ratio |
5.8 : 1 |
Valves |
OHV |
Carburation System |
1
carburettor, Type BMW Spezial two valve 24 mm |
Engine Lubricating System |
Forced feed lubrication |
Oil
Pump |
Gear pump |
|
|
Power Transmission |
|
Clutch |
Single plate, dry - two plates from engine No. 70889 |
Number of Gears |
3 |
Shifting |
Manual |
Gearbox Ratios |
2.83 / 1.55 / 1.08 |
Rear Wheel Ratio |
1 : 4.38 (1 : 5.7 with sidecar) |
Bevel/Crownwheel |
13 / 57
teeth (10 /57 with sidecar) |
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|
Electrical System |
|
Ignition System |
Bosch high voltage magneto ignition |
Generator |
Bosch
magneto generator on request |
Spark Plugs |
Bosch W 175 |
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|
|
|
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 gearing on Cardan shaft |
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|
Dimensions/Weights |
|
Length x Width x Height |
2100 x 800 x 950 mm (82.67 x 31.49 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 |
150 Kg
/ 330 lb |
Load
Rating |
210 Kg
/ 462 lb |
Fuel
Consumption |
3.5
litres 100 Km approx. / 80 mpg / 67 mpg US |
Oil
Consumption |
1 - 2
litres per 1,000 Km approx. |
Top
Speed |
115
Kph / 71 mph |
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