Plan - 1550 Ki-61 Tony
The Kawasaki Ki-61 Hien (Flying Swallow) was a Japanese World War II fighter aircraft used by the Imperial Japanese Army Air Force. It was the only mass-produced Japanese fighter of the war to use a liquid-cooled inline V-cylinder engine. Over 3,000 Ki-61s were produced. Initial prototypes saw action over Yokohama during the Halsey-Doolittle Raid on 18 April 1942, and continued to fly combat missions throughout the war. The Ki-61 was designed by Takeo Doi and his deputy Shin Owada in response to a late 1939 tender by the Koku Hombu for two fighters, each to be built around the Daimler-Benz DB 601Aa engine. Production aircraft used a Kawasaki licensed DB 601, known as the Ha-40. The model was designed by Mark Rittinger. It has a 31.5-in. wingspan and gets power from a Speed-400 6-volt type motor. The model was designed for 8-cell NiCad power, but would be very easy to convert to brushless motor power with either 3- or 4-cell power. The plan has been CAD drawn with much annotation on the sheet.