Aixro XF-40The Aixro XF-40 is a German aircraft engine, designed and produced by Aixro of Aachen for use in ultralight aircraft.WWW aixro.de/en/products/civi...Design and developmentThe XF-40 is a single-rotor Wankel engine. It is a displacement, liquid-cooled, petrol engine design, with a poly V belt reduction drive with a reduction ratio of 1.25:1. It employs capacitor discharge ignition and produces at 6500 rpm.ApplicationsRoland Z-120 RelaxGarland Vampire