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.
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 |
