Model Tech Fun Fighters P-51 ARF Assembly Instructions Manual page 7

❑ Allow the C/A and the epoxy to fully cure, then pivot the aileron up and down several times to free up the hinges and then repeat
the previous procedures to hinge the second aileron to the other wing panel.
IMPORTANT Check the integrity of the hinges after the C/A fully cures by gently pulling on the ailerons. If one or more hinges
feels loose, apply more C/A to the hinge(s) and allow it to completely cure. The last thing you want is for a hinge to come loose
during flight.
step 2: aLigning the Wing paneLs
IMPORTANT The wing joiner is cut in the shape of a shallow "V". When test-fitting the wing joiner into the wing panels in the
next procedure, make sure that the "V" shape is toward the top of the wing panels.
❑ Cut away any excess covering material from around the aileron torque
rod wire.
❑ Cut out a 1" (25mm) square piece of wax paper, then slide the wax paper
between the torque rod wire and the trailing edge of the wing panel.
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The wax paper will prevent epoxy from gluing the torque rod wire to the
trailing edge of the wing.
❑ Apply a thin layer of epoxy to the end of the aileron torque rod wire and
into the predrilled hole and the precut groove in the aileron.
❑ Push the aileron and its hinges into the corresponding three hinge slots
in the trailing edge of the wing panel, making sure that the torque rod wire
is firmly seated within the groove in the aileron.
❑ Remove the T-Pins and push the aileron up against the trailing edge.
There should be no more than a 1/32" (.7mm) wide hinge gap and both the
inner and the outer tips of the aileron should not rub against the wing panel.
❑ While holding the aileron tight against the trailing edge, pivot the aileron
down 45º and apply 5-6 drops of thin C/A to the exposed area of each hinge,
then turn the wing panel over and repeat for the other side of the hinges.
❑ Cut away the excess covering material that overlaps onto the root ribs
of each wing panel, leaving about 1/16" (1.6mm) overlapped so it does not
pull away.
IMPORTANT It's very important to the integrity of the wing center-
section joint that you remove as much covering material from the root ribs
as possible. Do not omit this procedure or the wing center-section joint
may fail during flight.
❑ Locate and draw a vertical centerline on one side of the wing joiner.
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