1973 Norton 750 Roadster MkV

Norton 750 Roadster MkV 1973


1973 Norton 750 Roadster MkV specifications, pictures, reviews and rating

General information
Model name Norton 750 Roadster MkV
Year of manufacture 1973
Type Classic
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Engine and transmission
Engine size 745.0 ccm (45.46 cubic inches)
Type of engine Twin, four-stroke
Engine details 360 degree parallel twin, air cooled.
Output 58.0 HP (42.3 kW)) @ 6000 RPM
Torque 63.7 Nm (6.5 kgf-m or 47.0 ft.lbs)
Top speed 186.7 km/h (116.0 mph)
0-100 km/h (0-62 mph) 5.00 seconds
1/4 mile (0.4 km) 12.80 seconds
Maximum RPM 7500
Compression 8.9:1
Bore x stroke 73.0 x 89.0 mm (2.9 x 3.5 inches)
Valves per cylinder 2
Fuel system Carburettor. Twin Amal 32mm Concentric Mk1 carburettors
Ignition Std points/coils. Fitted with Power Arc electronic system
Lubrication system Dry sump high scavenging pump, separate oil tank
Cooling system Air
Gearbox 4-speed
Transmission type Chain (final drive)
Clutch Laycock de Normanville diaphragm clutch, dry
Fuel consumption 3.62 litres/100 km (27.6 km/l or 64.98 mpg)
Greenhouse gases 84.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Exhaust system Twin chrome pipes, upswept‘Peashooter’ Norton mufflers, rubber mounted
Chassis, suspension, brakes and wheels
Frame type 2 1/4´ single backbone frame, twin cradle, isolastic mounting
Front suspension Norton Roadholder two way hydraulic damped
Front wheel travel 152 mm (6.0 inches)
Rear suspension Twin Girlinv shocks, spring load adjustable
Front tire 4.00-19
Rear tire 4.00-19
Front brakes Single disc. Twin piston Lockheed calliper with cast iron disc
Rear brakes Expanding brake (drum brake)
Wheels Stainless spoked, alloy rims, alloy hubs
Physical measures and capacities
Dry weight 180.5 kg (398.0 pounds)
Power/weight ratio 0.3213 HP/kg
Other specifications
Starter Kick
Instruments Smiths speedo to 150 mph. Tachometer to 9000 rpm
Electrical 12 volt positive ground, 180 watt alternator, capacitor assisted
Light Lucas 65/50 watt quartz halogen. Replaced with LED
Comments MkV was the last of the 750s produced, incorporating all the improvements made during its six year production life.
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Further information
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