Planeta 3

1974 IZH Planeta 3 Technical Analysis & Specification Breakdown

At the heart of the 1974 IZH Planeta 3 classic motorcycle, IZH relies on a 346 cc (21.1 cu in) air-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 18 HP (13.1 kW) at 4,800 rpm, transferring power to the rear wheel through a 4-speed gearbox and 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 Planeta 3 measures 168 kg (370 lbs) wet (curb), translating to a power-to-weight ratio of 0.11 HP/kg (9.33 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 110 km/h (68 mph).

Within MotoLibrary's IZH archive, this model family spans 3 indexed model years from 1973 to 1975, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.