Rocket 3

1969 BSA Rocket 3 Technical Analysis & Specification Breakdown

Built around BSA's sport motorcycle platform, the 1969 BSA Rocket 3 pairs a 740 cc (45.2 cu in) air-cooled in-line three, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 58 HP (42.3 kW) at 7,500 rpm while maximum torque reaches 61 Nm (45 lb-ft) at 6,900 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 78.4 HP per liter and a 600 rpm working window between peak torque (6,900 rpm) and peak power (7,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the Rocket 3 measures 226 kg (498 lbs) wet (curb), translating to a power-to-weight ratio of 0.26 HP/kg (3.9 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,430 mm (56.3 in) wheelbase engineered for balanced agility and highway composure. The 19-liter (5 US gal) fuel tank paired with a rated consumption of 6.72 L/100 km provides an estimated theoretical range of roughly 283 km (176 miles) between fill-ups, while factory top speed is listed at 185 km/h (115 mph).

Within MotoLibrary's BSA archive, this model family spans 2 indexed model years from 1968 to 1969, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.