Have Futaba 3PK with PK-FSM2.4G and R603FS rx
connect servo to ch1
connect esc to ch2

turn on TX, then turn on car

The fan on the esc then starts to fluctuate (faster then slower) and the LED on the RX flash red then green (repeating) when LED is flashing the esc fan also slows down.

Initially servo works fine, then servo action becomes irregular and LED flashes red/green again


apoligies it is really hard to explain.

Have tried with new servo (hobbyking) same issues.

Disconnect servo - issue stops

does anyone have any ideas what i am doing wrong?

cheers

Check Two things. First is that if your servo is not digital then your system must be in PPM mode and not HRS. Two is try to reset your ESC. Usually the servo problem is the PPM/HRS modes.

Hi
thanks for the reply, have only got non digital servo's to test with (have ordered digital one)

Set mode to PPM -
Reset ESC to default settings (running in blinky mode)

Turn on TX, then turn on car

Steer left then right - RX flashes green then red - steering not responsive

Replaced servo with new one - identical issue.

Am at a bit of a loss what i have done wrong with this one

Your settings look correct for the transmitter therefore it appears that your servo is drawing too much power and causing the voltage to drop to the receiver. Try adding a "glitchbuster" capacitor to the receiver. I have had to do that with some of the more powerful digital servos. Also check that your steering is not binding anywhere causing the additional draw in power and that the end points are set so that you are not binding the servo at the far end of the travel.

Thanks for your help with this one.
Tried 3 new out of the box Hobbyking HK15288A servo's all caused the same issues.
Borrowed a metal gear servo - problem resolved, also pulled an old futuba servo out of my boys car - problem also resolved.

Looks like wont be using the Hobbyking servo's no more

Appreciate your assistance, will also chase up the glitchbuster capacitor