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?![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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!