P-47 at Warbird Flyin Video Thunderbolt P47 Hanger 9, 45cc thor gas engine The new Hangar 9 P-47 Thunderbolt has exceptional scale realism and a great flight performance. The 'razorback' Thunderbolt is a well-done representation of the rugged Republic P-47 http://www.youtube.com/watch?v=IaxoqJVkKOQ This Warbird was the largest and heaviest single-engine aircraft of WW II.