A true scratch-built project, this 1/10-scale Dornier DO-X done up in 1929 Lufthansa livery was designed, built and piloted by Michael Bräuer. This impressive built-up plane has a 16-foot wingspan and weighs in at 132 pounds, and it’s powered by twelve (12!) O.S. .62 4-strokes. Michael notes that he spent a year building this giant plane and that it has Futaba servos, fiberglass engine cowls and retracts and that its top speed is 59mph. The sound those 12 powerplants make is incredible, and the video shows how well the model flies. Thanks to RC Media World for taking this footage at the Hausen am Abis Flight Days Airshow in Switzerland.