P&W Wasp Major
36 ft. 7 in.
40 ft. 11 in.
6- .50 cal.
The Republic XP-72, called the Super Thunderbolt, resembled its predecessor, but with a different nose treatment.
Two prototypes were built. A 3,450 horsepower Pratt and Whitney Wasp Major radial engine resided under the cowl.
The first prototype flew on February 2, 1944 using a standard four bladed propeller. The second flew in July of 1944 using a special contra rotating six bladed propeller to offset the torque effects of the engine.
The second prototype was lost early in its flight test program, but the first prototype aircraft so impressed the United States Air Force that they ordered 100 production aircraft.
Republic XP-72 orders were canceled at the end of World War II prior to any other aircraft being produced when it was found that jet powered aircraft were superior in performance.
Republic XP-72 - Harold Weaver
Pictured above and immediately below is the Republic XP-72 radio control scale model airplane scratch built by Harold Weaver. It has a 92" wingspan and is powered by a Quadra 100 engine. Harold tells us that the all up weight is 35.5 lbs.
The next three pictures are of the the Republic XP-72 project from beginning to near completion by Roscoedude. You can find the build thread on RC Groups. Its wingspan is 31". Power comes from an AXI 2212/26 motor. The pictures are shown with a two bladed prop that will be replaced by one with three blades. The picture of the aircraft in flight is without a canopy. That is because the temporary canopy, seen in the second picture, is due for replacement with a scale one.
We don't know of any other Republic XP-72 radio control airplanes. It shouldn't be difficult to convert a standard aircraft into an XP-72.
Pictured last below is a nice example of the original aircraft from a Yellow Aircraft kit. It has a wingspan of 80" with a length of 70". Construction materials used are fiberglass for the fuselage and balsa sheeting over foam for the wings. It can be powered by 1.8 - 2.1 or larger engines. All up weight is from about 19 to 26 lbs.