Norton MK2A 850 Commando Roadster 1974
Complete specifications and details for the 1974 Norton MK2A 850 Commando Roadster. This comprehensive guide includes engine specifications, dimensions, features, and performance data.
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Basic Information
| Make | Norton |
|---|---|
| Model | MK2A 850 Commando Roadster |
| Year | 1974 |
| Category | Sport |
Chassis, Suspension & Brakes
| Frame Type | Double cradle, large back bone steel, with Isolastic vibration system |
|---|---|
| Front Brakes | Single disc |
| Front Suspension | Telescopic |
| Front Wheel Travel | 152 mm (6.0 inches) |
| Rear Brakes | Expanding brake (drum brake) |
| Rear Suspension | Twin shocks |
| Rear Wheel Travel | 76 mm (3.0 inches) |
| Wheels | Spoke |
Other Specifications
| Color Options | Blue, red, black |
|---|---|
| Electrical | 12v dc |
| 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. |
| Starter | Kick |
Engine & Transmission
| Displacement | 828.00 ccm (50.52 cubic inches) |
|---|---|
| Engine Type | Same engine as the Interstate |
| Engine Details | Twin, four-stroke |
| Power | 60.00 HP (43.8 kW)) @ 6250 RPM |
| Top Speed | 189.9 km/h (118.0 mph) |
| One Quarter Mile | 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 |
| 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 |
Dimensions & Capacities
| Dry Weight | 188.2 kg (415.0 pounds) |
|---|---|
| Fuel Capacity | 11.36 litres (3.00 gallons) |
| Ground Clearance | 152 mm (6.0 inches) |
| Oil Capacity | 3.00 litres (0.20 quarts) |
| Overall Length | 2,235 mm (88.0 inches) |
| Power Weight Ratio | 0.3187 HP/kg |
| Reserve Fuel Capacity | 3.79 litres (1.00 gallons) |
| Seat Height | 787 mm (31.0 inches) If adjustable, lowest setting. |
| Weight Incl Oil Gas Etc | 199.6 kg (440.0 pounds) |