On July 22, 1994, approximately 1730 central daylight time, a Piper J3C-65, N70580, was substantially damaged during take off near Waller, Texas. The instructor pilot was not injured. Visual meteorological conditions prevailed for the 14 CFR 91 flight. The pilot reported to the Federal Aviation Administration inspector that he was conducting spin instruction for a rated pilot when the engine lost power. He reported that a successful forced landing was made to a horse track. Following the landing, he and the other pilot inspected the airplane and found no damage. The instructor pilot told the other pilot to wait there while he flew back to Waller and would send a vehicle for him. The instructor pilot then took off, and during the initial climb the right stabilizer struck a fence. The airplane pitched up and rolled to the left, coming to rest on an adjacent road. The resulting ground impact caused structural damage to the airplane.