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I would advise using a prop with 2 blades rather than 3 as it would be more efficient due to airflow. Also what transmitter are you using? aalejo its too heavy and the source will be 500mah jesus make it 5000 or 10000 9volts to make it up in the air longer and more trust and make trust me will do the work naja452 I don't think you have ever built or flown a multirotor, This thing probably weighs half as much as a 5Ah battery, he might be able to double the battery but thats it. .5Ah will work fine. aalejo   i make one but i use a motor a dvd rom i try it with some microcontroller and some for bluetooth mech is been working and pretty enough to much power its to much trust and its much better ke4cpc A lot of Acronyms, please provide a glossary or a link, if possible. I'd like to try and make something like this with my two 11 year olds. I_build_cool_stuff ESC = electric speed controller...