DIY Challenger III 50% Flown by Norbert Fischer at the FLY-IN of MFC-St. Margarethen 2018 The original aircraft is flown by Sean D. Tucker from the USA. Model data: Scale 1/2 Span: 3.1 meters Engine: Valach 210, 2 cylinder 4 stroke Propeller: Scale 3 blade Propeller 32x12 by Seidel Prop Weight: 24.8 kg This is the third prototype of the Challenger, which I made completely in self-made. Norbert likes to fly true-to-original aerobatics with smoke. | RC Scale Airplanes