Siemens-Halske Sh 11The Siemens-Halske Sh 11 was a seven-cylinder, air-cooled, radial engine for aircraft built in Germany in the 1920s. First run in 1925, it was rated at 75 kW.Applications Albatros L 68 Bach 3-CT-2 Air Yacht Bach 3-CT-3 Air Yacht Bach 3-CT-4 Air Yacht BFW M.26 LFG V 40 Messerschmitt M 21 Messerschmitt M 26 Raab-Katzenstein Kl. 1 Schwalbe Udet U 12