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I flew my friend's 235/320 for several years before I
finished my 235, and I never experienced any instability except once when I got
into a dutch-roll episode on a go-around with an instructor. However, because of
all the talk about the tail, and wanting to increase my hinge moment, I
increased the elevator chord and added 3 inches on each side of the stab just
outboard of a shortened balance extension. I added 1 1/2" to the trailing edge
of the elevator inboard, tapering to 3/4" outboard. I also added
balance weights to the center of the elevator inside the fuselage to offset the
shortened end weights. I have enough elevator power to drag my ventral fin
after landing with a 200 lb passenger aboard.
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