RE: the rational of trimming
How Bryan knows how I ultimately set up a model is a mystery to me .
As I noted - there are many opinions and what is good for some is no good for others
"waist" your time as it suits .
Dag -how do I trim for pitching when rudder is applied ?
This is related to CG setups so watch out!
Some models will NOT trim out of this characteristic
Some will do it increasingly as more rudder is applied
Some are very good at doing litle pitching as rudder is applied
The reason why the pitch with rudder is applied is pretty simple
A yaw (away from straight flight ) , sets up a loss in in the balance of the stabilizing forces which hold the wings at the desired angle of attack .
Usually -this is because the horizontal stab develops less downforce during the yaw.
Sometimes this is due to blanking of one side of the stab.
Redoing the hinge line of the rudder is sometimes used as a band aid - not too effectively
Perhaps others have a fix
I don't
I found that lateral area placement and the vertical location of area in the fuselage really affect this
Of course -I found this thru making various foam fuselages and prooving what force layouts really did what in yawing maneuvers
other self appointed experts may have a fix for this issue on any design - I don't