Ulster 500

1938 Rudge Ulster 500 Technical Analysis & Specification Breakdown

Engineered by Rudge for the sport motorcycle segment, the 1938 Rudge Ulster 500 features a 499 cc (30.5 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 45 HP (32.8 kW) at 5,300 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 90.2 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

Within MotoLibrary's Rudge archive, this model family spans 11 indexed model years from 1929 to 1939, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.