Engineered by Hercules for the sport motorcycle segment, the 1956 Hercules 322 relies on a 246 cc (15 cu in) air-cooled twin, two-stroke powerplant. In factory specification, peak output is rated at 15.1 HP (11 kW) at 5,000 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 61.4 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the 322 measures 159 kg (351 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.53 kg per horsepower).
Within MotoLibrary's Hercules archive, this model family spans 6 indexed model years from 1953 to 1958, 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.
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.
