According to the pilot, he was back taxing on runway 19 to depart on runway 1. The pilot stated that the tailwind and runway slope "apparently allowed the airplane to gain more than normal taxi speed." As the pilot realized the airplane was approaching the end of the runway, he began to apply brake pressure to "avoid running off the end of the runway." The airplane nosed over and came to rest inverted, substantially damaging the rudder. A post accident inspection completed by a Federal Aviation Administration Inspector revealed no mechanical anomalies. The winds reported at an airport 9 miles to the south, at the time of the accident, were from 010 degrees at 7 knots.