Originally Posted by magik30
how can I do for?
I use differential thrust for yaw control.
I use a 6 ch receiver with my DX8. I plug one esc into the throttle and one into my aux channel. I have one mix that ties the aux to the throttle at 100% that is always on.
I switch the remaining 2 mixes with my landing gear switch. This lets me turn the differential throttle on and off. These two mixes are rudder to throttle and rudder to aux. I mix both at 50%, one negative and one positive. When activated the mixes advance the throttles to 25%. So at idle on the throttle stick you have 25% thrust on both motors with a differential thrust range on both motors of 0 to 50 percent using the rudder stick. At full throttle both motors advance to 75% with a differential range of 50 to 100 percent. This way both ESCs stay between 0 and 100 percent. Mine recalibrate the zero point if I go below the 0 percent point.
This setup generates plenty of yaw. I generally launch with differential off then switch on in the air. I have a transmitter warning to remind me to have the gear switch in the right position when I turn on the transmitter.