PilotX Posted February 2, 2023 Report Posted February 2, 2023 Trying to assist with troubleshooting since we can't get the plane back to avionics in a timely manner. The G3X has flight path boxes. They are offset because some component sees a stiff crosswind. The winds are off by a bit, which probably means the boxes are correct for the inputs received. Is the magnetometer twisted? Setting in the G3X? Quote
Ragsf15e Posted February 2, 2023 Report Posted February 2, 2023 On 2/2/2023 at 12:53 AM, PilotX said: Trying to assist with troubleshooting since we can't get the plane back to avionics in a timely manner. The G3X has flight path boxes. They are offset because some component sees a stiff crosswind. The winds are off by a bit, which probably means the boxes are correct for the inputs received. Is the magnetometer twisted? Setting in the G3X? Expand Yikes. Do you have a panel compass to compare headings? The wind computations require multiple inputs, but that looks big enough that it’s not OAT or airspeed/groundspeed related. Heading vs track…. I bet you've got an issue there. Any chance that the gps magnetic variation is messed up giving a bad track? Quote
Ragsf15e Posted February 2, 2023 Report Posted February 2, 2023 On 2/2/2023 at 1:19 AM, rbp said: there's a 58kt left xwind, so the plane is crabbing 15 degrees (35 CRS-20 HDG)starboard through the boxes. (I can do the trigonometry if you want) Expand Yes, but he said the x wind doesn’t actually exist. Quote
PT20J Posted February 2, 2023 Report Posted February 2, 2023 On 2/2/2023 at 12:53 AM, PilotX said: Is the magnetometer twisted? Expand Did you do the magnetometer calibration on a compass rose after installation? 1 Quote
PilotX Posted February 2, 2023 Author Report Posted February 2, 2023 On 2/2/2023 at 1:19 AM, rbp said: there's a 58kt left xwind, so the plane is crabbing 15 degrees (35 CRS-20 HDG)starboard through the boxes. (I can do the trigonometry if you want) Expand The math is helpful, the fix is helpfuller. Quote
PilotX Posted February 2, 2023 Author Report Posted February 2, 2023 On 2/2/2023 at 1:33 AM, PT20J said: Did you do the magnetometer calibration on a compass rose after installation? Expand I wasn't involved but redoing that might help. Quote
ArtVandelay Posted February 2, 2023 Report Posted February 2, 2023 You can check it while on the ground, where is the magnetometer located? Quote
PilotX Posted February 2, 2023 Author Report Posted February 2, 2023 On 2/2/2023 at 2:23 AM, ArtVandelay said: You can check it while on the ground, where is the magnetometer located? Expand Left wing I believe. Quote
ArtVandelay Posted February 2, 2023 Report Posted February 2, 2023 On 2/2/2023 at 5:55 AM, PilotX said: Left wing I believe.There’s requirements to keep it away from motors and wiring.I would try it on the ground, checking all directions with lights/autopilot off. If it seems to be okay, then try it with lights on, roll servo operating. 2 Quote
PilotX Posted February 4, 2023 Author Report Posted February 4, 2023 Seems a quick redo at the compass rose fixed it. Now on to the non working YD (yes it is installed) on the GFC 500. 2 Quote
carusoam Posted February 4, 2023 Report Posted February 4, 2023 Great follow-up PX! Thanks for sharing it. Best regards, -a- 1 Quote
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