Originally Posted by
sharam
How are you guys measuring the CG? To get a resolution down to a given millimeter, you must be using something than having your buddy assist you and lift the wings by your finger!
Also, I am not sure I understand why 15mm will make such a big difference in the flight handling characteristics of this plane. I am still new to jets and would like to learn as much as possible.
Finger tips are fine for me, every pilot has a difference requirement. I have flown the Hawk with a huge range, just you need to adjust how you land that first time knowing how the elevator feels. The Hawk I flew last week was the most extreme, ending up with 1lb of lead stuck to the tail fairing!
Balanced stabs are always good, but not needed on this aeroplane with quality servos (original thread starter has 8711 and still flying without an adjustment)
Dave