i made the ft mini scout plane and when i handlaunched it just stalled and made a funny long sound just like singing a song. I bought this motor from RCBAZAAR
http://www.rcbazaar.com/product.aspx?productid=4089 with a 30a esc. and i put 6x4 prop on it. did i overprop it?? the motor did become hot but not very much. ill try to find a recording and will soon post it here. please help