Model Tech Yak 54 Assembly Instructions Manual page 12

sTEP 1: aligNiNg ThE horizoNTal sTabilisEr
q Remove the elevator halves from the stabiliser and set them aside for now. Discard the temporary hinges that are used for packing.
IMPORTANT The front of the stabiliser should be able to pivot slightly from side to side and the back should stay firmly in place and
aligned. The trailing edge should not be allowed to move from side to side.
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q Cut away the covering material from over each side of the horizontal stabiliser
mounting slot in the fuselage. The stabiliser mounting slot is 5/6" (8mm) tall
and 3" (76mm) long. The front of stabiliser mounting slot is 7-3/8" (87mm) in
front of the back of the fuselage.
q Measure and draw a centreline mark on the trailing edge of the stabiliser.
q Measure out 7/8" (22mm) from each side of the centreline mark and draw
two marks. You will use these two outer marks to centre the trailing edge of
the stabiliser with the fuselage.
q Slide the stabiliser into the mounting slot and temporarily align the two outer
marks you drew previously with the sides of the fuselage.
q When satisfied with the alignment, hold only the trailing edge of the stabiliser
in position using a T-Pin.
q With the wing panels installed, use a straight edge ruler to measure the
distance between the tips of the stabiliser and the tips of the wing. Pivot the
front of the stabiliser until both of these measurements are equal.
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When both of these measurements are equal, you're assured that the
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stabiliser is square to the wing.
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