|Producer (type)||CWL Centralne Warsztaty Lotnicze, Poland|
|Engine||SPA 6, 200 HP|
|Country of Origin||Poland|
|Used on||Ansaldo A1 Balilla|
About the propeller. The propeller was produced by Warsaw factory located on Pola Mokotowskie CZL. Preserved in very good shape: the propeller number and the engine type also a pitch and diameter markings are clearly pressed on the hub. Also manufacturer’s decals – both CZL marks are well preserved. The manufacturing date of the prop is missing as it was not a part of the CZL markings, just estimated for the period of 1921-1924. In 1970s purchased by aviator and propeller enthusiast Andrzej Perzyna. Now a part of private collection (2018).
Construction. The propeller lamination consists of 7 plies (20.5 mm thick each) of ash wood. No sheathing fitted, covered by colorless coating.
Aircraft and Engine. The propeller was produced for one of Polish built Ansaldo A-1 Balilla powered by 220 HP inline, 6 cylinder, SPA (Società Piemontese Automobili) Italian engine. Engine’s CC: 14,6 liter, weight ca 240 kg, compression ratio: 5,2.
CZL propeller displayed together with BREDA engine (SPA Licence) in Polish Airforce Museum, Dęblin, January 2019. Photo: M. Peikert.