bluemarly67

so i got a haktoys 635c seems to be a very durable heli has had some hard crashes hasn't broke a thing. but one thing that i cant seem to figure out is how to mod the tail rotor motor i would like it to have more forward and revers thrust runs very slow so far i have moved the battery forward but really had no improvement so for a beginner heli operator i am unsure of the size of motor and would like to upgrade for some more speed thanks in a rush i am not new to rcs but am kinda new to helis thanks all timmy