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R 75 Sidecar Unit
   
. Data sheet
. Back to Models
Production
Begin of the Production   1941
End of the Production   1944
Numbers Produced   approx. 18.000
Price   2.630,- RM
Engine
Internal Designation   275/2
Motor Type   four-stroke two-cylinder flat-twin
Bore x Stroke   78 x 78 mm
Displacement   745 ccm
Max Power   26 hp at 4000 rpm
Compression Ratio   5.8 : 1
Valves   ohv
Carburetion System   2 x carburettor type Graetzin Sa 24/1 and Sa 24/2
Engine Lubricating System   forced-feed lubrication
Oil Pump   gear pump
Power transmission
Clutch   single-plate, dry
Number of Gears   "road": 4 + 1 reverse gear; "off-road": 3 + 1 reverse gear
Shifting   foot and manual shifting with selector lever "off-road" + "road"
Gearbox Ratios   "road": 3.22 / 1.83 / 1.21 / 0.90 reverse gear 2.41, "off-road": 4.46 / 2.54 / 1.67 reverse gear 3.3
Rear WheelRatio   1 : 6.05 (from production no. 754056 1 : 5.69)
Electrical system
Ignition System   magneto ignition
Generator   Noris DS 6/50
Spark Plugs   Bosch W 175 T1
 
Chassis
Designation   275/1
Frame   multi-part, bolted steel tubular frame
Front Wheel Suspension   telescopic fork
Rear Wheel Suspension   rigid, plate springs on the boat,tube springs on sidecar wheel
Wheel Rims   3D x 16
Tyres front   4.5 x 16 (off-road block profile)
Tyres rear   4.5 x 16 (off-road block profile)
Brakes front   drum brakes Ø 250 mm, mech.
Brakes rear   drum brakes Ø 250 mm, mech.; sidecar: drum brakes Ø 250 mm, hydr.
Dimensions / Weights
Length x Width x Height   2400 x 1730 x 1000 mm (with Sidecar)
Wheel Base   1444 mm
Fuel Tank Capacity   24 l
Unladen Weight, Full Tank   400 kg (with original sidecar 320 kg)
Load Rating   270 kg
Fuel Consumption   approx. 6,3 l/100 km (road) bis 8,5 l/100 km (off-road)
Oil Consumption   approx. 0,5 - 1 l/1000km
Top Speed   95 kph