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Difference in slid/skid readings

lr172

Well Known Member
I have a Garmin GSU 25 mounted on the extreme upper
left corner of the panel bulkead. I also have a G5 mounted on the far left side of the instrument panel. As I work to finalize the size of rudder trim tab, I am noticing a discrepancy between the ball position on the two instruments. The difference is maybe 1/6 to 1/8 of a ball width, so pretty minor. I suspect the angle to a/c centerline may be different on the two panels.

Wondering if anyone knows which of the two panels is likely to be closer to perpendicular to the centerline.

Thanks,

Larry
 
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