Assemble The Wing; Hook Up The Ailerons - GREAT PLANES PT-19 Instruction Manual

2. Use a covering iron with a cover sock to tighten any
loose covering and thoroughly bond it to the wood structure.
The optimum temperature measured on the surface of a
covering iron with a protective cover sock is about 280°F
[140°C] which requires a dial setting of about 300°F [150°C]
or "medium" heat on most covering irons. Wherever the
covering is over wood (especially on the sheet balsa tail
surfaces) press down on the iron to thoroughly bond the
covering to the balsa underneath. If the covering blisters
up over balsa and cannot be pressed back down, the iron
may be too hot or you are leaving it in one location for too
long—try reducing the heat or moving the iron a little faster.
3. Give a generous tug on all control surfaces to check the
hinges. Add thin CA where necessary to any loose hinges.
Residual CA or CA "fog" is removable with a paper towel
square dampened with CA debonder.
4. If powering your PT-19 with a glow engine, apply a fi lm
of epoxy or CA to edges of the covering around the nose
and fi rewall to seal from fuel and exhaust residue.

ASSEMBLE THE WING

Hook Up the Ailerons

1. Attach a 9" [230mm] or 12" [300mm] servo extension
to each aileron servo (6" [150mm] servo extensions aren't
quite long enough). Use 1/2" [13mm] heat shrink tubing, tape
or a dab of glue to secure the connections so they cannot
come undone inside the wing later.
Refer to this image while mounting the aileron servos
and hooking up the ailerons. The holes in the control
horn should be centered over the hinge gap. You can
do both wings together, or one-at-a-time (the left wing
is shown in the photos).
2. If your servo is too large for the servo opening in the
wing, the opening may be enlarged by cutting along the inside
and aft edges of the opening as shown by the dashed lines.
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