MINI REVIEW

3 Brief History of Norton Motorcycles  Founded in 1898  First motorcycle built in 1902  Many models built through the years  For road, racing, military and police use

Commando Predecessors Norton Navigator 1960 Norton Dominator 1961 Norton Atlas 1966

Significant Changes and Improvements Although the 850 Commando looked very similar to the 750, there were made a number of significant mechanical changes, including:  Fixes to the Combat engine – camshaft and roller main bearing  Foot gear change moved to left side to match USA and Japan  Rear disc brake introduced  Electric starter motor introduced  Isolastic engine mounts to reduce engine vibration  30 kilograms heavier

Basic Specs 1975 Norton Commando MK 3 Country: Great Britain Engine: Air-cooled, vertical twin 4-stroke Power Rating: 6,500rpm Bore x Stroke: 77 x 89mm Displacement: 828cc Valves: Overhead, pushrod-activated Fuel System: Twin Amal concentris 32mm carburetors Transmission: 4-speed Suspension: Front Norton Roadholder telescopic fork, rear twin shock Brakes: Front and rear Norton-Lockhead single disc Weight: 515lb. Top Speed: 115mph

Retained Commando Look 750 Commando 850 Commando

Additional Information

9 SPECIFICATIONS – 1975 Norton Commando 850 MkIII (Interstate) Engine: 828cc four stroke OHV parallel twin Bore/Stroke: 77 x 89mm Compression: 8.5:1 Power/Torque: 5900rpm / 5000rpm Fuel System: Two 32mm Amal carburettors Cooling System: Air Electrical System: 12 volt Ignition: Battery/coil Transmission/Drive: 4 speed manual/chain drive Front Suspension: Telescopic forks Rear Suspension: Swingarm with twin coilover shocks Front Brake: 10.7 inch (272 mm) disc w/single piston caliper Rear Brake: 10.7 inch (272 mm) disc w/single piston caliper Front Tyre: 4.10 x 19 inch Rear Tyre: 4.10 x 19 inch Weight: 492lb (223 kg) wet Seat Height: 32 inch (813 mm) Wheelbase: 57 inch (1448 mm) Fuel Capacity: 5.25 gal (24 Lt) Roadsters had 2.75 gal (12 Lt) tanks Top Speed: 177 kph (approx) Full Specs

Norton Commando Rat Bike