TheEMC 2 (photo below is a version with the wing elevated ) was designed for slow flight
Most "pattern" guys were into going fast and playing follow the leader --
anyway the lateral area setup allowed for rolls which required little trim chage during rolls at slow speeds .
I learned this doing the Jungmanns for TOC in 1989 (flown in 91-)
Steve thought the rudder fin was way too small -I was adamant it was plenty as the fuselage setup (being between the wings ) afforded excellent lift(lots of uninterrupted area) and the rudder simply had to act as a trim tab - (sorta).
A larger rudder and fin INCREASES AOA on fuselage required for knife edged flight .
The lateral area distribution goes to pot.
Geo's comment on the torque also caught my eye - I thought the same thing but I suspected it had nothing to do with being out of the "torque band of the engine".
Props know nothing about torque bands
Also- I can shift the max torque band on any good gas engine -by retiming and pipe setup -
I must ask George exactly what it meant --
Chip's 1/2 degree thing is a carry over from when ever --
1/2 degree is 3/32 in one foot (aprox).
if one trims ailerons a hair - effective symmetrical airfoil -goes out enough to cancel that -
I see errors of 1/2 degree in models all the time . (not mine of course)
I setup my big planes as zero as possible - and some have high thrust lines - some ar zero.
The real fix of course is ----------- low wing loading which = low trim drag changes and lots of power which fixes all of my other screw ups .