I will get back to you once i have enough data flying it. Unfortunately, I'm outta town for the next 3 weeks then I will get down to some test flying trying to establish some numbers. So far, i was absolutely impressed by the stability exhibited both on water and in the air. No tendencies noted for pitch instability in flight. I'm still working on some possible improvements so till its all said and done, i will have no videos or info to show.. Hang tight. This is one mean flying Gyroamphib...