BMW R75 Sidecar Unit (1941)

Technical Specifications
1941 BMW R75 Sidecar Unit
Engine
Engine type
Bore x Stroke
Displacement
Valves
Compression ratio
Max Power
Max Torque
Fuel system
Transmission
Final drive
Clutch
Ignition type
Starting system
Lubrication
Exhaust
Spark plug
Generator
Gear ratios

Four-stroke two cylinder flat twin
78.0 x 78.0 mm (3.07 x 3.07 inches)
745 cc

5.8:1
26 hp @ 4000 rpm

2 x carburettor type Graetzin Sa 24/1 and Sa 24/2
"Road": 4 + 1 reverse gear, "off-road": 3 + 1 reverse gear
Cardan
Dry single plate
Magneto ignition

Forced feed lubrication

Bosch W 175 T1
Noris DS 6/50
Dimensions
Frame type
Castor
Overall length
Overall width
Overall height
Wheelbase
Seat height
Ground clearance
Dry weight
Fuel capacity
Colors
Suspension (front)
Suspension (rear)
Tyre (front)
Tyre (rear)
Brake (front)
Brake (rear)

Multi part, bolted steel tubular frame

2400 mm (94.48 inches)
1730 mm (68.11 inches)
1000 mm (39.37 inches)
1444 mm (56.85 inches)
810 mm (31.90 inches)
165 mm (56.49 inches)
400 kg
24 litres

Telescopic fork
Rigid, plate springs on the boat, tube springs on sidecar wheel
4.5 x R16 (off road block profile)
4.5 x R16 (off road block profile)
Drum brake 250 mm / 9.84 in diameter, mech
Drum brake 250 mm / 9.84 in diameter, mech

Image: http://www.bmbikes.co.uk/specpages/R75_sidecar_unit.htm
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