Leader 120 Outdoor Flight Test 2 with Stock Battery & Problem Fixed! 👍

Leader 120 Outdoor Flight Test 2 with Stock Battery & Problem Fixed! 👍
Get the Leader 120 here : http://shrsl.com/jc1g Gearbest’s awesome Children and RC Toy Promotion : http://shrsl.com/jd90 Gearbest’s description – Description: …

More on ducted propellers, the Q-tip propeller
When I did a video explaining how ducts improve the performance of propellers, a number of people asked why they don’t simply put tip-fins on the end of …