Chang Jiang M1M CJ750 Specifications

Chang Jiang M1M CJ750 Specifications

Engine Type: Air-cooled, Side-Valve, Four-stroke, Boxer-twin (Horizontally opposed twin)
Head Type: Flathead
Cubic Capacity: 746cc
Bore: 78mm
Stroke: 78mm
Compression Ratio (original): 5.7:1
Compression Ratio (modified): 6.2:1
Maximum Horsepower (original): 22 bhp
Maximum Horsepower (modified): 24 bhp
RPM (original): 4200
RPM (modified): 4800
Fuel: Petrol, Regular, 87 octane
Carburettors: 24mm
Electrics (original): 6V 45W generator
Electrics (modified): 12V 60W alternator and rectifier
Starting System (original): transverse kick starter
Starting System (modified): electric starter plus kick
Spark Plugs: Torch 4114, Bosch W4AC
Engine Oil: 50W
Engine Oil Capacity: 2.0 litres
Fuel Tank Capacity: 24 litres
Transmission Oil Capacity: 0.800 litres
Final Drive Oil Capacity: 0.175 litres
Fuel Consumption 6 litres / 100 km
Maximum Speed: ~90 km/h
Recommended Cruising Speed: 75-80 km/h
Clutch Type: Two-plate Dry
Gearbox Type (original): Four forward gears
Gearbox Type (modified): Four forward plus one reverse gears
Gear ratio 1st gear: 3.6:1
Gear ratio 2nd gear: 2.29:1
Gear ratio 3rd gear: 1.71:1
Gear ratio 4th gear: 1.3:1
Drive Method: Kardan shaft and bevel gears
Final Drive ratio: 4.6:1 (optional 3.89:1, solo only)
Tyre Size: 26.5 x 3.75 (equivalent to 3.75 x 19)
Tyre Pressure Front: 22lbs / 2.2 bar
Tyre Pressure Rear: 30-45lbs / 3 bar
Tyre Pressure Sidecar: 22lbs / 2.2 bar
Tyre Pressure Spare: 30-45lbs / 3 bar
Battery (original): 6V positive ground
Battery (modified): 12V 28 amp hour, negative ground
Dry Weight: 360 Kg
Payload: Three adults plus 100 Kg
Length: 2400mm (8ft 4in)
Width: 1500mm (5ft 2in)
Height: 1041mm (3ft 5in) (without mirrors)
Track: 1168mm (3ft 10in)
Wheelbase: 1420mm (5ft)
Suspension Front: Telescopic Forks
Suspension Rear: Plunger Frame
Suspension Sidecar: Torsion Bar and Leaf Springs
Steering Angle: 25.5 degrees.

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