On August 23, 1994, at 0945 central daylight time, an experimental homebuilt Hodges P-51-51, N2073S, was substantially damaged during a forced landing near Beaumont, Texas. The private pilot was not injured. Visual meteorological conditions prevailed for the local personal flight. The Pilot/Operator report stated the initial climb rate after takeoff was unacceptable. During a left turn the height above the ground was 10 feet and the left wing struck the ground. The airplane "broke in half when the gear hit the ground." During an interview, conducted by the Federal Aviation Administration inspector, the pilot reported the following information. During the takeoff initial climb, the engine seemed to have lost power; however, engine RPM did not decrease. Terrain was rough and uneven with high vegetation. Structural components of the wings and fuselage were damaged. The pilot later reported that the pitch setting of the propeller was not set properly. He additionally reported that he had removed the original propeller and replaced it with a larger type (approved).