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R 12 1 carburettor
   
. Data sheet
. Back to Models
Production
Begin of the Production   1935
End of the Production   1942
Numbers Produced   36.000 (single- and double-carburettor versions)
Price   1.630,- RM
Engine
Internal Designation   M 56 S 6 or 212
Motor Type   four-stroke two-cylinder flat-twin
Bore x Stroke   78 x 78 mm
Displacement   745 ccm
Max Power   18 hp at 3400 rpm
Compression Ratio   5.2 : 1
Valves   sv
Carburetion System   1 x Sum CK, 25 mm
Engine Lubricating System   forced-feed lubrication
Oil Pump   gear pump
Power transmission
Clutch   double plates, dry
Number of Gears   4
Shifting   manual
Gearbox Ratios   3.18 / 2.06 / 1.42 / 1.09
Rear Wheel Ratio   1 : 4.07 (sidecar 1 : 4.75)
Bevel / Crownwheel   14 / 57 teeth (sidecar 12 / 57)
Electrical system
Ignition System   magneto or battery ignition
Generator   Bosch D 2 BRS 170
Spark Plugs   Bosch M 175 T1 or Bosch W 175 T1
 
Chassis
Designation   F 66
Frame   twin-loop pressed steel frame
Front Wheel Suspension   telescopic fork
Rear Wheel Suspension   rigid
Wheel Rims   3 x 19
Tyresfront   3.5 x 19
Tyres rear   3.5 x 19
Brakes front   drum brake Ø 200 mm
Brakes rear   drum brake Ø 200 mm
Dimensions / Weights
Length x Width x Height   2100 x 900 x 940 mm
Wheel Base   1380 mm
Fuel Tank Capacity   14 l
Unladen Weight, Full Tank   approx. 185 kg
Load Rating   300 kg
Fuel Consumption   approx. 3,5 - 4 l/100 km
Oil Consumption   approx. 1 - 2 l/1000 km
Top Speed   110 kph