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R4 Series 2

R 4 Series 2
. Data sheet
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Production
Begin of the Production 1933
End of the Production 1933
Numbers Produced 1737
Price 1.150,- RM
Engine
Internal Designation M 69 S 2
Motor Type four-stroke single-cylinder vertical
Bore x Stroke 84 x 78 mm
Displacement 398 ccm
Max Power 12 hp at 4000 rpm
Compression Ratio 5.7 : 1
Valves ohv
Carburetion System 1 x carburettor type SUM CK 3/500 Fr
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)
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 180 mm
Brakes rear drum brake Ø 180 mm
Dimensions / Weights
Length x Width x Height 1980 x 850 x 950 mm
Wheel Base 1300 mm
Fuel Tank Capacity 10 l
Unladen Weight, Full Tank 137 kg
PermittedWeight Limit 200 kg
Fuel Consumption approx. 3,5 l/100 km
Oil Consumption approx. 1 - 2 l/1000 km
Top Speed 100 kph
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