advanced scale models Sukhoi SU-26M Assembly Instructions Manual page 7

q Tie the end of the length of string that's inside the servo mounting hole to the servo extension plug, then pull the string from the other
end to guide the servo extension lead out through the root end of the wing panel.
STEp 4: inSTALLinG ThE AiLERon conTRoL LinkAGES
q Install the control horn and backplate, using two M2 x 25mm machine screws. Use wire cutters to cut the screws off flush with the
control horn backplate.
q Repeat the previous procedures to install the aileron control linkage assembly on the other wing panel.
IMPORTANT Fine-tune the centre adjustment of the ailerons after the wing panels have been installed. This will allow you to centre
the ailerons with the wing fairing on the fuselage.
q Install the aileron servo into the mounting hole, making sure to drill (1.6mm)
1/16" diameter pilot holes for the mounting screws, then repeat the previous
procedures to install the aileron servo into the second wing panel.
IMPORTANT The servo output shaft should be toward the leading edge
of the wing.
q Position and mark the mounting hole locations for one control horn on the
bottom of one aileron. When aligned properly, the centreline of the control horn
should be 298mm (11-3/4") out from the root end of the aileron (measured at the
hinge line) and the clevis attachment hole should be lined up over the hinge line.
q Drill 2mm (5/64") diameter pilot holes through the aileron for the control
horn mounting screws, then apply a couple of drops of thin C/A into the pilot
holes and allow the C/A to fully cure.
IMPORTANT The C/A will harden the surrounding wood, making the
mounting area stronger.
q Thread one 3mm hex nut onto each end of one aileron pushrod, then thread
one clevis onto each end of the aileron pushrod.
q Snap the clevis into the hole that is 19mm (3/4") out from the centre of the
servo horn, then centre the aileron servo and install the servo horn onto the
servo, making sure that it's centred and pointing out toward the wing tip.
q Hold the aileron centred, snap the clevis into the sixth hole up from the
base of the control horn, then tighten the two hex nuts against the clevises to
lock the pushrod and clevises in place.
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