Norton commando 850 John Player Special (1974)

The Norton Commando 850 John Player Special is a motorcycle that was manufactured in 1974. It has a four-stroke, parallel-twin cylinder engine and is air-cooled, with a compression ratio of 8.5:1. The bike has a maximum power output of 60 hp at 6200 rpm and is equipped with a four-speed transmission and a chain final drive. The frame is a twin downtube cradle with Isolastic engine mounts and the front suspension is telescopic forks with dual shocks in the rear. The front brake is a single disc while the rear is a drum brake. The Norton Commando 850 JPS has a wheelbase of 1440 mm and a dry-weight of 188 kg. The fuel capacity is 12 litres or 3.2 US gallons.

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Technical specifications:

Make Model: Norton commando 850 John Player Special

Year: 1974

Engine: Four stroke, parallel twin cylinder, push rod 2 valves per cylinder.

Capacity: 829 cc / 50.6 cu in

Bore x Stroke: 77 x 89 mm

Cooling System: Air cooled

Compression Ratio: 8.5:1

Induction: 2 x ~A32 mm Amal carburetors

Starting: Kick

Max Power: 60 hp / 44.7 kW @ 6200 rpm

Transmission: 4 Speed

Final Drive: Chain

Frame: Twin downtube cradle with Isolastic engine mounts

Front Suspension: Telescopic forks

Rear Suspension: Dual shocks

Front Brakes: Single disc

Rear Brakes: Drum

Front Tyre: 3.50 H18

Rear Tyre: 4.10 V18

Wheelbase: 1440 mm / 56.7 in

Dry-Weight: 188 kg / 414 lbs

Fuel Capacity: 12 Litres / 3.2 US gal