Model: R 26
Production  
Engine  
Power transmission  
Electrical System  
Chassis  
Dimensions/Weights  
     
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Production
Begin of the Production   1956
End of the Production   1960
Numbers Produced   30236
Price   2.150,- DM
Engine
Internal Designation   226/1
Motor Type   four-stroke single-cylinder vertical
Bore x Stroke   68 x 68 mm
Displacement   247 ccm
Max Power   15 hp at 6400 rpm
Compression Ratio   7.5 : 1
Valves   ohv
Carburetion System   1 x Bing carburettor type 1/26/46
Engine Lubricating System   forced-feed lubrication
Oil Pump   gear pump
Power Transmission
Clutch   single-plate, dry
Number of Gears   4
Shifting   foot switching
Gearbox Ratios   5.33 / 3.02 / 2.04 / 1.54
Rear Wheel Ratio   1 : 4.16 (with sidecar 1 : 5.2)
Bevel / Crownwheel   6 / 25 teeth (with sidecar 5:26)
Electrical System
Ignition System   battery ignition
Generator   Noris ZLZ 60/6/1600 1/L
Spark Plugs   Bosch W 240 T1
Chassis
Designation   226/1
Frame   steel twin-loop frame, welded
Front Wheel Suspension   long swing arm with suspension units and oil-pressure dampers
Rear Wheel Suspension   long swing arm with suspension units and oil-pressure dampers
Wheel Rims   2.15B x 18 deep-bed rims
Tyres front   3.25 x 18
Tyres rear   3.25 x 18
Brakes front   drum brake Ø 160 mm, full width
Brakes rear   drum brake Ø 160 mm, full width
Dimensions/Weights
Length x Width x Height   2090 x 660 x 975 mm
Wheel Base   975 mm
Fuel Tank Capacity   15 l
Unladen Weight, Full Tank   158 kg
PermittedWeight Limit   325 kg (with original sidecar 480 kg )
Clearance   105 mm
Idle/Riding Noise   77/81 phon, from 22/5/1957: 75/78 phon, from 22/12/1958: 81/82 phon
Fuel Consumption   approx. 3,3 l/100 km
Oil Consumption   approx. 0,5 - 1 l/1000 km
Top Speed   128 kph (with original sidecar 90 kph)