Positioned in Ariel's allround motorcycle lineup, the 1940 Ariel Ariel W-NG 350 features a 346 cc (21.1 cu in) air-cooled engine configuration. In factory specification, peak output is rated at 17 HP (12.4 kW) at 5,800 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 49.2 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Ariel W-NG 350 measures 169 kg (373 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (9.92 kg per horsepower). The 11.9-liter (3.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Ariel archive, this model family spans 5 indexed model years from 1940 to 1944, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
