Norton Atlas (1968)

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The Norton Atlas motorcycle, manufactured in 1968, is equipped with a four-stroke parallel twin-cylinder engine. The engine has a capacity of 647 cc and generates 52 horsepower at 6800 rpm. The bike has a kick start system and a four-speed transmission, with a final drive via chain. The frame is a featherbed duplex steel cradle, with telescopic forks for the front suspension and dual shocks for the rear suspension, which is five-way adjustable. The front and rear brakes are drum-type, with the front brake measuring 203 mm and the rear brake measuring 178 mm. The Norton Atlas has a top speed of 185 km/h or 115 mph and can carry up to 13.5 L or 3.6 US gallons of fuel. The front and rear tires are sized 3.25-19 and 4.00-18 respectively, while the bike weighs in at 185 kg or 408 lbs when dry.

Technical specifications:

Make Model: Norton 650SS

Year: 1968


Engine: Four stroke, parallel twin cylinder, push rod, 2 valves per cylinder.
Capacity: 647 cc / 39.5 cu in
Bore x Stroke: 68 X 89 mm
Compression Ratio: 8.9:1
Cooling System: Air cooled
Induction: 2 x ~A30 mm Amal concentric carburetors
Starting: Kick
Max Power: 38.8 hW / 52 hp @ 6800 rpm
Transmission: 4 Speed
Final Drive: Chain
Frame: Featherbed duplex steel cradle
Front Suspension: Telescopic forks
Rear Suspension: Dual shocks, 5-way adjustable
Front Brakes: ~A203 mm Drum
Rear Brakes: ~A178 mm Drum

Front Tyre: 3.25-19
Rear Tyre: 4.00-18
Dry-Weight: 185 kg / 408 lbs
Fuel Capacity: 13.5 L / 3.6 US gal
Top Speed: 185 km/h / 115 mph

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