Originally Posted by
gonzo416
I have a throttle problem that hopefully someone can help me with. When I turn the radio on then the car , the throttle powers the motor briefly. This is not good as the car will take off if it's on the ground. If I turn the car off then back on it doesn't happen again. It happens when I turn both the radio and car off then on again. I'm using a Spektrum DX3R with the SR3520 receiver and Futaba S9551 servo. The speedo is brand new.
Do a fresh bind on the receiver then reset the speed control.
I suspect that the receiver fail safe position is the cause of he brief motor run while the Tx and Rx synch up.