The JK-1, built by Józef Kranc, is an extraordinary design dating back to the late 1980s. The first calculations and sketches were made in 1989, and the aircraft was completed in the spring of 1995.
The JK-1’s lightweight, wooden structure is reminiscent of pre-war RWD aircraft, and its final shape is the result of many years of work, testing, and refinement. The aircraft is powered by a 50 hp Volkswagen VW 1600 engine, coupled with a reduction gear designed by Józef Kranc and a propeller from an SZD-45 “Ogar” motor glider. The entire design is a unique example of the designer’s ingenuity and passion.
The aircraft was first presented to the public at the 15th Amateur Aircraft Rally in Oleśnica in June 1996, where it won the Grand Prix and first place among 40 participants!
Interestingly, the aircraft was initially intended to be named “Górnik” (Miner), but was ultimately named “Irena” in honor of the designer’s wife.
Although a test flight was planned, ultimately – due to weather conditions and applicable regulations – only successful taxiing trials were conducted. After the test flight, the aircraft was dismantled and stored for years in Boguszów.
It was donated to the museum by Stanisław Kranc, son of Józef Kranc.
Technical data:
Loading area: 10 m²
Current weight: 226 kg
Drive: Four-cylinder VW 1600 car engine with reduction gear, air-cooled, 50 HP
