Dear Eric, Thank you so much for your replying redounded solve my problem, But now I'm seeing another problem that doesn't exist before; I charged the batteries fully and installed it, Set the Rudder stick as well as its trimmer to neutral position first, Gently pushed the throttle more until the skid was about to leave the ground, It was wondrous!, I saw that my Lama-5 was turning around itself fast, that made me to move the rudder stick to opposite direction (Near to the utmost!) to preventing fast direction.This turning shall control just by throttle stick, it's more than trimmer level.Also, as I push the throttle more, upper Motor starts first, then lower motor starts, Hence I think torque of upper motor as well as its speed is extra, but this case wasn't before! In addition, I'd like to know what's The Trim(like a tiny potentiometer)there is on the helicopter control box(receiver)? I would like to take this opportunity to thank you in advance for your time and attention.I'm looking forward to hearing from you. Best RegardsSaeed.
