ORIGINAL: dhal22
I have a gorgeous fully painted P-8 with a flying stab. Brand new YS 60 and and Kraft retracts but I'm to afraid to fly it.
Flying stabs should be statically balanced to keep pitch divergence at bay. Also if the fulcrum is chosen poorly, there may be too much aerodynamic imbalance to overcome even with today's excellent high tork digital servos.
The AC of wing/stab is by definition 25%MAC. Place the fulcrum on or very near the AC projection to the fuse, statically balance the thing and it should work fine