schalmoseley

Ok i built a new plane and decided to use a dx7 because its not suposed to pick up any rf from the motor. well every time i fire up the brillelli with roy sholl ignition the servos start to move up and down[&o]. the closer i move the reciever battery to the motor the worst it gets. i know its not the battery brand or type because i've tryed two different types. A 4.8 nimh and a fromeco 5200 lithium ion with fromeco regulator at 6.1 volts. I'm in the process of talking to scott with brillelli about it being the plug, resistor gone bad or just the ignition gone bad. But i was under the impresion that the dx7 was suposed to be interferance free from everything. if you could give any advise on things to check it would help me out alot.

dsnyder

That isn't interference, the system will hold servo positions with the exception of throttle which will go to the stored position during binding in the event of signal loss. In other words, if it was an interference problem, you would not see the servos move with the exception of throttle.

I would check for any slop in the control system, arm fit on the servo, and gears for any excessive play. Also I would recommend checking all your servo connections (unplug them, re-install a couple times to be sure the pins are clean and making good contact). Also check your current draw with an amp meter to be certain the current draw is not excessive. Also be sure that your servos are not mounted too rigidly (servo screws too tight, mounting rails tight against the servo, etc). If the oscillation stops by touching the surface with your finger, it is likely a slop, set up, or electrical issue. If it does stop, it won't happen in the air due to flight loads, but I would recommend giving everything a good checkover.

arobatx

Maybe I misunderstood the original post, but I didn't think he was talking about oscillation, hopefully schalmoseley will clarify.

schalmoseley

The system is not losing signal, When the motor is running the servos are glitching. There is no slop in any of the servo hardware. And no it dosn't stop by touching it. The serface is moving about an 1/2" up and down. I called product support at horizon and they seem to think that somthing is wrong with the reciever.