kbalch
Well Known Member
I've been working on the ground tests of the autopilot system prior to enabling it in flight for the first time. Today, I discovered that the roll servo only wants to roll left.
In other words, when the AP is turned on (with heading bug centered) in Hdg/Pit mode, it wants to roll left immediately and will not respond to turning the heading bug right. It's been suggested to me that I swap my pitch servo over to see whether the problem follows it or not. A reasonable troubleshooting step, though obviously a bit of a PITA.
My thought is that it's unlikely to be a servo failure, as they self-test and should annunciate a problem. It seems more like a wiring issue, possibly with a short or perhaps a pin not fully seated.
Has anyone run into this? Any troubleshooting suggestions that haven't occurred to me?
Thanks!
In other words, when the AP is turned on (with heading bug centered) in Hdg/Pit mode, it wants to roll left immediately and will not respond to turning the heading bug right. It's been suggested to me that I swap my pitch servo over to see whether the problem follows it or not. A reasonable troubleshooting step, though obviously a bit of a PITA.
My thought is that it's unlikely to be a servo failure, as they self-test and should annunciate a problem. It seems more like a wiring issue, possibly with a short or perhaps a pin not fully seated.
Has anyone run into this? Any troubleshooting suggestions that haven't occurred to me?
Thanks!