On November 6, 1996 about 1645 eastern standard time, a Vanatta KR-2 amateur built experimental airplane, N85JV, was substantially damaged when it collided with terrain after a loss of engine power shortly after takeoff at the Allen C. Perkinson Municipal Airport, Blackstone, Virginia. The pilot, the sole occupant, was seriously injured. Visual meteorological conditions prevailed and no flight plan was filed. The local flight was conducted under 14 CFR Part 91, and originated approximately 1644 edt. Witnesses stated that they saw the airplane takeoff from runway 22, in a shallow climb and the engine sputtered and quit. The airplane rocked side to side then started turning right then rolled left until it was inverted. The airplane stuck the ground inverted about 150 feet off the right side of the runway. There was about 1500 feet of runway remaining when the engine stopped and the airplane turned right. During examination of the wreckage the FAA was able to establish flight control continuity, and that the propeller was not rotating at impact. In addition, they found that the engine crankshaft was broken off at the propeller flange, and the magneto housing was crushed. A determination as to why the engine quit shortly after takeoff was not possible due to impact damage. An interview with the pilot found that he was unable to remember any of the events that occurred during the accident. The pilot was sent an NTSB Form 6120.1/2, Pilot Operator Report on November 13, 1996, but it had not been returned at the time of this report.