recently I've read your article on horizon hobby site, "Three steps to 3D". If I can, I have two questions about the trimming procedure you suggest there. I preface that I'm interested to apply what follows to pattern planes, not 3D ones.
The questions are:
1) you suggest an interesting rudder trim procedure (that I didn't know): perform some loops and watch if the plane "rolls off"... here what do you mean precisely by "roll off"? I've always set my rudder trim on vertical uplines: this method is better? In an old post you said that you were used to set rudder trim on uplines: so, what do I (you) have to do if after setting it with the upline test, we perform some loops and we see that the plane don't track right? I did this test yesterday, with interesting results: if I set my trim for uplines, then the loops are a bit off towards the right: this is due to little [b]RIGHT[\b] trim needed for spiraling slipstream I guess... If I do the opposite, i.e. I trim during loops, then I find that uplines are a bit off...
2) When the plane "rolls off" you also suggest to reduce elevator throw???
Thanks in advance for your HUGE help Don, as you always do. Happy new Year!