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74 Norton MK2A 850 Commando Roadster specificationsNorton MK2A 850 Commando Roadster 1974


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1974 Norton MK2A 850 Commando Roadster

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Norton's profilation of this bike
This was the last year for the none electric start. Also, this is the most coveted Commando as it has all of Nortons improvements.

General information
Model:Norton MK2A 850 Commando Roadster
Year:1974
Category:Sport
Rating:Do you know this bike?
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Price as new (MSRP):US$ 1900. Prices depend on country, taxes, accessories, etc.
Engine and transmission
Displacement:828.00 ccm (50.52 cubic inches)
Engine type:Twin, four-stroke
Engine details:Same engine as the Interstate
Power:60.00 HP (43.8 kW)) @ 6250 RPM
Top speed:189.9 km/h (118.0 mph)
1/4 mile (0.4 km):13.000 seconds
Max RPM:7500
Compression:8.5:1
Bore x stroke:77.0 x 89.0 mm (3.0 x 3.5 inches)
Valves per cylinder:2
Fuel system:Carburettor. Twin Amals
Fuel control:OHV
Ignition:points
Lubrication system:Dry sump
Cooling system:Air
Gearbox:4-speed
Transmission type,
final drive:
Chain
Clutch:Wet multiplate
Fuel consumption:5.11 litres/100 km (19.6 km/l or 46.03 mpg)
Greenhouse gases:118.6 CO2 g/km. (CO2 - Carbon dioxide emission)
Exhaust system:Double chrome pipes
Chassis, suspension, brakes and wheels
Frame type:Double cradle, large back bone steel, with Isolastic vibration system
Front suspension:Telescopic
Front suspension travel:152 mm (6.0 inches)
Rear suspension:Twin shocks
Rear suspension travel:76 mm (3.0 inches)
Front brakes:Single disc
Rear brakes:Expanding brake (drum brake)
Wheels:Spoke
Physical measures and capacities
Dry weight:188.2 kg (415.0 pounds)
Weight incl. oil, gas, etc:199.6 kg (440.0 pounds)
Power/weight ratio:0.3187 HP/kg
Seat height:787 mm (31.0 inches) If adjustable, lowest setting.
Overall length:2,235 mm (88.0 inches)
Ground clearance:152 mm (6.0 inches)
Wheelbase:1,440 mm (56.7 inches)
Fuel capacity:11.36 litres (3.00 gallons)
Reserve fuel capacity:3.79 litres (1.00 gallons)
Oil capacity:3.00 litres (0.20 quarts)
Other specifications
Starter:Kick
Electrical:12v dc
Color options:Blue, Red, Black
Comments:English bike. Last of the kick start Commandos. Shifts on the right side. 1 up 3 down
Modifications compared to previous model:Not much change from the 73 model. The air boxes are more restricted with the mk2A.
Further information
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