Classic and Classy Motorcycles Ltd

Historical Context

The 1966 Norton Atlas 750 marked the end of an era for Norton’s Featherbed-framed twins. Introduced in 1962 as a larger-capacity evolution of the 650SS, the Atlas featured the proven parallel twin engine now bored out to 745cc. It was Norton’s answer to the growing demand for more power in the early 1960s—especially in the American export market. By 1966, the Atlas was nearing the end of its run, soon to be replaced by the Norton Commando. However, it remained a beautifully balanced, lightweight machine with one of the best-handling frames of the period. The 1966 model year is particularly desirable as it benefits from refinements in both engine and cycle parts before the platform was retired.

Technical Specifications and Performance

• Year: 1966
• Make: Norton
• Model: Atlas 750
• Engine Displacement: 745cc
• Engine Type: Air-cooled OHV parallel twin
• Compression Ratio: 8.9:1
• Carburetion: Twin Amal Monobloc carburetors
• Ignition System: Magneto (early), coil with alternator (later)
• Transmission Type: 4-speed manual
• Final Drive: Chain
• Cooling System: Air-cooled
• Fuel Capacity: Approx. 3.5 gallons
• Braking System: Drum brakes front and rear
• Dry Weight: Approx. 395 lbs
• Top Speed: Around 110 mph

Technical Advancements

The Atlas retained Norton’s famous Featherbed frame, widely praised as one of the best-handling motorcycle frames of all time. The increase to 750cc gave it more torque, especially in the mid-range, making it an excellent touring and fast road bike. However, the larger engine also brought more vibration—a known trait of the Atlas that would later lead to the development of the rubber-mounted Commando. Despite this, the Atlas was considered well-engineered, and the later coil ignition systems provided easier starting and improved reliability. Its twin Amal carbs were easy to tune and delivered a responsive throttle feel, even if they required regular maintenance.

Evolution of the Model

The Atlas evolved from the 650SS and served as the last major model before Norton introduced the Commando in 1968. It was available in several trims and exported widely, particularly to the U.S. market, where many were fitted with high handlebars and smaller fuel tanks. The 1966 model year was the final full production year for the Atlas and included some updates to electrics and running gear. Collectors often prefer this final-year model due to its improved components while still offering the classic Featherbed frame and pre-Commando design language.

Competitors in the Market

In 1966, the Atlas competed with Triumph’s 650 Bonneville, BSA’s A65 Lightning, and emerging Japanese models like the Honda CB450. While those bikes offered smoother engines or electric starters, the Norton Atlas had character in spades. It was lighter than its rivals, better handling, and visually striking with its slim tank and signature Norton styling. Its road manners and race-bred DNA gave it an edge among serious riders, even if it demanded a bit more attention to keep in top form.

Legacy and Appeal

As a barn find or project bike, the 1966 Norton Atlas is a top-tier classic. Its Featherbed frame, robust twin engine, and pre-Commando heritage make it a standout among British motorcycles. Once restored, the Atlas delivers a unique blend of grace, power, and agility. It appeals to collectors looking for the last of the old-school Nortons and to riders who appreciate a machine that rewards skilled hands and passionate ownership. With its timeless lines and rich heritage, the Atlas remains a crown jewel of 1960s British motorcycling.