Well i recently fried two hacker 20 20l motors and hacker xpro 20 amp esc. It was on an aifoilz with the included 10x4.7 prop. Thanks to you guys and rcgroups i have concluded that i need a different prop. Some one recommended a 11x5 e fly. I will also borrow a watt meter to check the draw but i dont know what prop would theoretically be better in the first place. Also every time i put on the prop an expert helped me. How do i tighten the prop on the motor. An adjustable wrench and me trying to hold the motor doesnt seen to get it tight enough.

Thanks
Dan