Van's Air Force
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Aileron trim
- Thread starter Janekom
- Start date
Carl Froehlich
Well Known Member
Installed and recommended. It is not however a "must have". I don't use mine much but like to have it.
Carl
Auburntsts
Well Known Member
I have it but don't use it much. Truth in lending: on x-country flights I rarely hand fly in cruise where aileron trim would be useful and my autopilot hasn't bitched about a heavy wing. 
I have it but don't use it much. Truth in lending: on x-country flights I rarely hand fly in cruise where aileron trim would be useful and my autopilot hasn't bitched about a heavy wing.
+1 sort of. I don't have it, rarely miss it because usually the autopilot is flying. I do practice and fly hand-flown approaches and then I wish I had it. If doing over, I'd put it in. OTOH my rudder trim is a fixed wedge and I'm perfectly satisfied with that.
PS If you have a heavy wing one thing to check is the vertical height of the leading edge of the aileron, relative to the wing. 1/16" makes a real difference (high = heavy). Vans sells undrilled brackets for this very reason.
rightrudder
Well Known Member
I've got the manual trim also. Works great!
I have a slightly heavy right wing, but the trim takes care of it so I haven't gone to measures like the wedge or tweaking the flap position.
If you put it in, make sure you crank down the pinch bolt on the UHMW bearing block a ton..."too tight" won't seem that way when you use it; set it too loose and it might not hold the setting.
I have a slightly heavy right wing, but the trim takes care of it so I haven't gone to measures like the wedge or tweaking the flap position.
If you put it in, make sure you crank down the pinch bolt on the UHMW bearing block a ton..."too tight" won't seem that way when you use it; set it too loose and it might not hold the setting.
JackinMichigan
Well Known Member
Auto-Pilot control of Aileron Trim
I also have the G3X Garmin. Long story, but I discovered that the power going to the (left wing) aileron trim comes from the (right wing) auto-pilot servo. I called Aerotronics who built my panel as to why they would wire it in that manner.
They said that the autopilot trims the plane neutral before taking over. I see advantages in that, i.e. less stress on the autopilot servo.
I also have the G3X Garmin. Long story, but I discovered that the power going to the (left wing) aileron trim comes from the (right wing) auto-pilot servo. I called Aerotronics who built my panel as to why they would wire it in that manner.
They said that the autopilot trims the plane neutral before taking over. I see advantages in that, i.e. less stress on the autopilot servo.
I would really like to see a picture of that. My -4 project has a big ugly aileron tab with gaps and horns. I wuld like to replace it with an internal system. Since I already have the Ray Allen servo I figure I should use that to drive the spring system. Any guidance appreciated.
