400 F

1978 Sanglas 400 F Technical Analysis & Specification Breakdown

Positioned in Sanglas's naked motorcycle lineup, the 1978 Sanglas 400 F utilizes a 422 cc (25.8 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 24 HP (17.5 kW) at 5,800 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 56.9 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 400 F measures 186 kg (410 lbs) wet (curb), translating to a power-to-weight ratio of 0.13 HP/kg (7.75 kg per horsepower). The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 136 km/h (85 mph).

Within MotoLibrary's Sanglas archive, this model family spans 2 indexed model years from 1978 to 1979, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.