The Warner Revolution II, also marketed as the Space Walker II, is an American homebuilt aircraft that was designed and produced by Warner Aerocraft of Seminole, Florida. When it was available the aircraft was supplied as a kit or in the form of plans for amateur construction. The aircraft is intended to be reminiscent of the open cockpit monoplanes of the 1930s, such as the Ryan ST. Design and development Developed from the single-seat Warner Revolution I, the Revolution II features a cantilever low wing, a two-seat tandem open cockpit with dual windshields, fixed conventional landing gear with wheel pants and a single engine in tractor configuration. The aircraft is made from a combination of wood and metal tubing, covered in doped aircraft fabric. Its span wing lacks flaps and has a wing area of . The acceptable power range is and the standard engines used are the Continental O-240 or the Lycoming O-290 powerplants. The Revolution II has a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for the pilot, passenger and baggage is . The standard day, sea level, no wind takeoff with a engine is and the landing roll is . Operational history In May 2014, 19 examples were registered in the United States with the Federal Aviation Administration, although a total of 30 had been registered at one time. Specifications (Revolution II) References External links Revolution II 1990s United States sport aircraft 1990s United States ultralight aircraft 1990s United States civil utility aircraft Single-engined tractor aircraft Low-wing aircraft Homebuilt aircraft