Model: R 4 Series 2
Production
Engine
Power transmission
Electrical System
Chassis
Dimensions/Weights
Back to Index
Print
Production
Start of Production
1933
End of Production
1933
Number Sold
1737
Price
1150,-RM
Engine
Internal Designation
M 69 S 2
Motor Type
four-stroke single-cyclinder vertical
Bore x Stroke
84 x 78 mm
Displacement
398 ccm
Max Power
12hp at 4000 rpm
Compression Ratio
5.7 : 1
Valves
ohv
Carburetion System
1 x register carburettor Sum type C K 3/500
Engine Lubricating System
forced-feed lubrication
Oil Pump
gear pump
Power Transmission
Clutch
single-plate, dry
Number of Gears
4
Shifting
Manual (frame shift gate)
Gearbox Ratios
3.6 / 2.18 / 1.35 / 1.1
Rear Wheel Ratio
1 : 5.11 (with sidecar 1 : 5.63)
Bevel / Crownwheel
9 / 46 teeth (with sidecar 8 / 45 teeth
Electrical System
Ignition System
battery ignition
Generator
Bosch 6 V/30 W
Spark Plugs
Bosch DM 175/1
Chassis
Designation
F 69 S 2
Frame
pressed steel duplex frame
Front Wheel Suspension
plate spring, 9 laminae, with friction shock absorber
Rear Wheel Suspension
rigid
Wheel Rims
26 x 3.5
Tyres Front
26 x 3.5 SS
Tyres Rear
26 x 3.5 SS
Brakes Front
drum brake Ø 180mm
Brakes Rear
drum brake Ø 180mm
Dimensions/Weights
Length x Width x Height
1980 x 850 x 950 mm
Wheel Base
1300mm
Fuel Tank Capacity
10 litres
Unladen Weight, Full Tank
137 kg
Permitted Weight Limit
200 kg
Fuel Consumption
approx. 3.5 l/100km
Oil Consumption
approx. 1 - 2 l/1000km
Top Speed
100 kph
