boeing737driver
Member
Hi,
I just finished installing the remote compass, oat and aoa pitot to go with my D10a. I have two problems:
After calibrating the aoa by doing 4 stalls, power on and off, flaps up and down, I find that my RV-6 stalls with only one red bar showing on the aoa display. The manual says the stall should occur near the border between the red and yellow. Dynon says to redo the calibration flight and there is no other way to adjust the display. Which makes me wonder why the manual says if you can't get a good calibration, call tech support. And tech support says do what the manual says. LOL I'm thinking if I do the calibration stalls without going all the way to the break that might move the indication to a more reasonable value.
The other problem is that in flight the calculated wind displayed is different for different directions of flight. For instance when test flying north or south the winds showed light and variable or very low while flying east or west the wind showed 20 to 30 knots from the south. I suspected that my compass calibration was bad so I've redone it and the heading agrees within a degree or two of actual magnetic heading on our various taxiways. But, in flight the wind values are still diferent for different directions of flight. My steam airspeed reads 5 knots higher than the efis. And incorrect indicated/true airspeed would effect the wind calculation, too. Tech support said compass calibration is the main problem they have seen, but I don't know how to make mine better.
Let me know your experiences/suggestions.
Thanks,
Bruce
I just finished installing the remote compass, oat and aoa pitot to go with my D10a. I have two problems:
After calibrating the aoa by doing 4 stalls, power on and off, flaps up and down, I find that my RV-6 stalls with only one red bar showing on the aoa display. The manual says the stall should occur near the border between the red and yellow. Dynon says to redo the calibration flight and there is no other way to adjust the display. Which makes me wonder why the manual says if you can't get a good calibration, call tech support. And tech support says do what the manual says. LOL I'm thinking if I do the calibration stalls without going all the way to the break that might move the indication to a more reasonable value.
The other problem is that in flight the calculated wind displayed is different for different directions of flight. For instance when test flying north or south the winds showed light and variable or very low while flying east or west the wind showed 20 to 30 knots from the south. I suspected that my compass calibration was bad so I've redone it and the heading agrees within a degree or two of actual magnetic heading on our various taxiways. But, in flight the wind values are still diferent for different directions of flight. My steam airspeed reads 5 knots higher than the efis. And incorrect indicated/true airspeed would effect the wind calculation, too. Tech support said compass calibration is the main problem they have seen, but I don't know how to make mine better.
Let me know your experiences/suggestions.
Thanks,
Bruce