319
1953 Hercules 319 Technical Analysis & Specification Breakdown
At the heart of the 1953 Hercules 319 sport motorcycle, Hercules pairs a 173 cc (10.6 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 9 HP (6.6 kW) at 5,250 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 52 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 319 measures 116 kg (256 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (12.89 kg per horsepower). The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 90 km/h (56 mph).
Within MotoLibrary's Hercules archive, this model family spans 4 indexed model years from 1953 to 1956, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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