OK, I have a space walker, schoolyard scale. I have an AP hornet .09 engine on it. The electronics in it are an AM band but it still is an aircraft controller.(4 channel) Made by kopro Jr MAX. 72 MHZ channel 54 if it makes a difference, (4)hitec HS-80 servos and the original reciever.
ANYWAYS.....my problem is.....when i turn on all the electronics everything seems to be fine, but when i start the engine, the elevator servo goes crazy. every once in a while, i can control it but most of the time it will do it's own thing. None of the other servos do this. I looked over everything to see if there was any metal to metal parts touching but couldent seem to find anything. I havent flown it yet, but i dont want to fly it like this.

Any help would be appreciated.

THANKS!!!


Joe

its posible the potentiometer in the wervo is going bad... or there may be a partially broken wire leading to the servo. Try a differnt servo in the same location.

Also... if you have a metal clevice on the metal throttle arm you can create RF noise that will drive the controls nuts. I have gone to using ball-links on my throttles to prevent this. (the ball link has a non-conductive pastic snapping on a brass ball. No metal-metal intermittant contact.)

FHHuber, thanks for the tip!!!! I looked at the pigtail of the servo wire where it hooks into the RX, it was was really hard to see and i overlooked that perticular sevo wire not quite all the way into the socket. Pushed it all the way in and all works perfect!!!!

THANKS A BUNCH!!!!!!

Joe