[1] On 1 January 1929, industrialist Wacław Sawicki formed the Lech company in Opalenica to build motorcycles.

Zalewski had recently returned to Poland after emigrating to the United States, and had knowledge of the American motorcycles of the era.

[2][3] The Ministry of Military Affairs was approached in December 1929 enquiring about supplying motorcycles to the Polish Army.

The Military Institute of Engineering Research in Warsaw was also contacted asking for a specification for army motorcycles.

[2][3] An improved model was introduced at the Communication and Tourism Exhibition in Poznań in mid-1930 and was well received by the press.

[2][3] The Ministry of Military Affairs set up an interdepartmental commission in September to look at the supply of motorcycle.