The pilot of the experimental amateur-built, tailwheel-equipped airplane stated that during the takeoff roll, at approximately 45 knots, the airplane's tail lifted off the ground and the airplane immediately turned left. The pilot attempted to correct with right rudder, brake, and aileron inputs; however, the airplane's right wing and propeller struck the ground. The pilot reduced power, and the airplane continued for approximately 150 feet before it nosed over. The airplane subsequently came to rest upright, and sustained substantial damage to the engine firewall and both wings. Postaccident examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed no mechanical anomalies of the brake system or rudder controls.