ORIGINAL: PeterP
Hi Bryan
I have a trimming question to ask (sorry for hyjacking the thread)
Please explain design thrust line? Do I have to assume the kit designer got this right in the first place?
What do you suggest as a model setup to make it sit in the wind better. Some model designs I have flown just fly better than others in the wind. Is it something to do with the relationship between engine thrust and wing incidence?
It seems to me Scott has it right. The wing is going to want to fly at the same angle of attack so changing the incidence will make the tail fly higher or lower. A lot of positive incidence will make the tail fly high. That should not affect the feel in pitch. CG will. You need to get the right combination of down thrust and CG position for the vertical lines at the same elevator trim setting for level flight.
It is not obvious to me that Todd is tail heavy from his description unless going south means it took even more down elevator inverted.
Jim O