Aerobatic
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 25; Flight Crew Total 1100; Flight Crew Type 200
Human-Machine Interface; Situational Awareness
Ground Event / Encounter Ground Strike - Aircraft; Inflight Event / Encounter Loss Of Aircraft Control
Aircraft Aircraft Damaged
Aircraft; Human Factors
Preflight inspection completed. Engine start-up checklist completed including initial brake test.Taxied to run up area using standard tailwheel S turns.Pre take-off checklist completed.Engine run-up to 1900 RPM's with control stick in full aft position.1.	Magneto checks completed.2.	Constant speed propeller cycling began. During the constant speed propeller cycling; the aircraft began to turn to the left abruptly. Suddenly; the nose of the aircraft began tipping forward. The propeller blades impacted the taxiway and engine had a sudden stoppage. Then; the tail of the aircraft came back down on the taxiway.
High performance tailwheel pilot experiences a propeller strike during engine run-up. As the propeller is cycled the aircraft begins turning to the left abruptly and the tail begins to lift. The propeller strikes the taxiway causing engine stoppage.