Dr. Kroeber und Sohn, G.m.b.H. of Treuenbrietzen, Germany developed this two-stroke cycle Kroeber engine.
O-39 (2-Stroke) -- {2.953 / 2.835 / 38.8} / {75 / 72 / 636}
2cyl; Model M4; 18hp@2700rpm; 1936-1939; Wt = 61#.
Single-ignition engine.
Ae39toAe41; Aprg9/67 (Möller Stomo article); J42; JBC; K&N; SA7/77 (Mue 13 application).
Applications: (Germany) Möller Stomo 3; Mue 13 motorglider. (Poland) BAK-1 "Horsefly"; ITS-8 motorglider