Motor worked very well during the first 4 flights of the day in my Tori. On the fourth flight the motor started to wine and sputter. Brought the plane down and thought some grass might have clogged the nose, but found no debris. Fifth flight the motor when into convulsions and seized. Put it on my bench to test the ESC and motor, ESC fine, motor started to burn and smoke. Not happy with the results and in no way do I blame AMAIN hobbies. Great Planes sold out to Horizon Hobby where I bought it. Boo Horizon Hobby!