Vmar J3.PIPER GUB Assembly & Operation Manual page 3

WING ASSEMBLY - JOINING THE WING HALVES (Gont.)
2A-
Apply plenty of30
minuta
epory
2B-Align the two wing panels
and
2C- Use
low tack masking tape
to hold
gluetoall
surfac6
slowly close
the gap until the
tightly together
:ilg",'iil
"11f"."31"
rirmr'
in
Step
2.4 Once the
epoxy has cured completely (allow
sev-
supplied.Starting on the bottom side of the wing,
stick
the
eral hours at least), the tape can
be
carefully removed
from
tape centrally over
the
joint
ensuring that
it is
pressed down
the
wing panels.
Peel
the tape
back
on itself... do
not
pull
firmly as you work around the wing. Wrap the tape all the
upright away from the wing. To
seal and finish
the
joint
in
way
around the wing
joint
in
one
piece,
starting
and
finish-
the
wings,
a
roll
of
wing joiner tape
has
been
ing on the
bottom.
Step 2.1 When the epoxy has cured in Stage
1,
trial fit the
second wing panel onto the
wing
joiner first to ensure
that
the two
panels
fit without an excessive gap.
Step 2.2 Now apply plenty of
epoxy
to
the wing
joiner
and
wing root ribs
of both wing panels. Use only
30
minute
epoxy to ensure a strong
bond
and give yourself plenty of
working time.
As
described
in the Step
1.3,
repeatedly
apply epoxy and insert
into
the wing
joiner
cavity, the epoxy
should
ooze from the joint and the excess should
be
cleaned off with a rag or tissue before it cures.
Step 2.3 Use low tack
maskilg tape to
align
the wing sur-
faces
and hold the two panels
together until
the
epoxy
cures.
3A-
Prepare
the servos by fitting
the
rubber grommets & ferrules supplied
with
your seryos
2D-
Apply
tape over the
joint starting
here on
the boftom
as
shown
To install the aileron servos
into the
wing you will
need the
following
items:
-
2
micro
servos (with mouting screws
control
arms and grommets)
-
Two aileron control
rod
assemblies with a
clevis
screwed onto
both ends
-
Low
tack
masking tape
-
2
aileron
control
horn assemblies
-
2
aileron extension cables 12 in
(30
cm)
Step
3.1 Turn the wing upside down.
Step
3.2 Trial fit the aileron servo into the servo mounting cavity. You may have
to
modify
the
cavity slightly to
provide clearance for the servo and
servo wires.
Step 3.3
Use
a hobby
knife
to
modify
the cavity as required. Most servos
have
their output shaft closer to one end than the other.
Mount
the servo so that
the
output shaft
is closer to the leading edge of the wing.
Step 3.4 Securely attach an aileron extension cable
to the
servo. Thread the
cable through the wing tube to the center of the
wing.
Screw the
servo into place
with the screws and grommets supplied. lt is
important to install the grommets
and screws correctly. See
the manual that came with your radio for
intructions
about your paticular servo grommets.(Note
that in some type servo
installation
without the grommets)
Step 3.5 Fasten the
screws down according to
the seryo
manufacturers recom-
mended tightness.
Step 3.6
Repeat
step
3.2
to
3.5
for the
other
wing panel.
2E-Continue applying
the tape
over
2F-
Gontinue back around to the bgttom
the top
of
the wing, pressing
down
of the wing
&
overlap the tape where
you
firmly
as
you
go
stafted. Trim off excess tape
INSTALLING THE AILERON SERVO INTO THE WING
38-
Aileron servo location