NORTON 850 COMMAND O MARK 3
The Norton 850 Commando Mark 3 is a British motorcycle that was manufactured by Norton from 1975 to 1977. It was the final iteration of the Commando, and it featured a number of improvements over the previous models, including a more powerful engine, a stronger frame, and a more comfortable seat.
The Commando Mark 3 was powered by a 828cc parallel-twin engine that produced 57 horsepower. The engine was mated to a five-speed gearbox, and it had a top speed of 115 mph. The frame was made of tubular steel, and it was designed to provide a comfortable ride. The seat was also redesigned to provide more support for the rider.
The Commando Mark 3 was a popular motorcycle, and it was praised for its performance, handling, and comfort. It was also relatively affordable, which made it a good value for the money. However, the Commando Mark 3 was not without its problems. The engine was known to be unreliable, and the frame was not as strong as it could have been.
Despite its problems, the Commando Mark 3 is still considered to be one of the best British motorcycles ever made. It is a classic motorcycle that is sure to turn heads wherever it goes.
Engine
The Norton 850 Commando Mark 3 is powered by a 828cc parallel-twin engine. The engine is air-cooled and has a compression ratio of 9.0:1. The bore and stroke are 79mm and 85.5mm, respectively. The engine produces 57 horsepower at 6,500 rpm and 50 lb-ft of torque at 5,000 rpm.
The engine is mated to a five-speed gearbox. The gearbox is all-up, meaning that the rider shifts up through the gears by moving the shift lever up. The gearbox is also right-foot operated, meaning that the rider shifts gears by using their right foot.
The engine is reliable and easy to maintain. The engine is also relatively fuel-efficient, getting an average of 50 mpg.
Frame
The Norton 850 Commando Mark 3 has a frame made of tubular steel. The frame is designed to provide a comfortable ride. The frame is also rigid, which provides good handling.
The frame is powder-coated black, which gives it a durable finish. The frame is also TIG-welded, which makes it strong and durable.
Suspension
The Norton 850 Commando Mark 3 has a front suspension consisting of 35mm telescopic forks. The forks have a travel of 120mm. The rear suspension consists of a swingarm with dual shocks. The shocks have a travel of 100mm.
The suspension is adjustable, allowing the rider to tailor the ride to their own preferences. The suspension is also well-damped, which provides a comfortable ride.
Brakes
The Norton 850 Commando Mark 3 has a front brake consisting of a single 310mm disc. The rear brake consists of a single 250mm disc. The brakes are hydraulically actuated.
The brakes are powerful and provide good stopping power. The brakes are also progressive, which makes them easy to control.
Wheels and Tires
The Norton 850 Commando Mark 3 has cast aluminum wheels. The front wheel is 19 inches in diameter, and the rear wheel is 18 inches in diameter. The tires are Avon Roadrider tires. The front tire is a 100/90-19, and the rear tire is a 130/80-18.
The tires provide good grip and handling. The tires are also durable and long-lasting.
Seat
The Norton 850 Commando Mark 3 has a single seat. The seat is made of leather. The seat is comfortable and provides good support for the rider.
The seat is also adjustable, allowing the rider to tailor the seat to their own height and weight.
Conclusion
The Norton 850 Commando Mark 3 is a classic British motorcycle. It is a well-made motorcycle that is reliable, easy to maintain, and fun to ride. The Commando Mark 3 is a good choice for riders who are looking for a classic motorcycle that can be used for commuting, touring, or track days.
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