A 175

1966 Hercules A 175 Technical Analysis & Specification Breakdown

At the heart of the 1966 Hercules A 175 sport motorcycle, Hercules utilizes a 173 cc (10.6 cu in) single cylinder, two-stroke layout. In factory specification, peak output is rated at 9.3 HP (6.8 kW) at 5,250 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 53.8 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 A 175 measures 140 kg (309 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (15.05 kg per horsepower).

Within MotoLibrary's Hercules archive, this model family spans 11 indexed model years from 1956 to 1966, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.