❑
13) Hold one of the white plastic control horns up against the
edge of the elevator. Use a fine tip pen to mark the two pegs on
the base of the control horn for cutting off just below the top
covering of the elevator. Then, use a sharp razor blade or hobby
knife to cut off the pegs at the marks.
❑
14) Note that there are two holes pre-drilled in the center of
the elevator, under the covering material, for the control horn
mounting. Puncture the covering material directly over these two
holes, on the BOTTOM of the elevator only, to accept the two
"pegs" of the control horn. Use a sharp knife to remove the small
strip of covering material between the two holes. Then, glue the
nylon control horn in place on the BOTTOM of the elevator, using
thick CA glue. Apply a small amount of glue to the two pegs and a
small amount of glue to the bottom of the control horn base itself.
With the three small holes in the control horn facing forward,
firmly press the horn into the two pre-drilled holes in the elevator,
until the base bottoms out on the elevator surface. If any glue
oozes out onto the covering, it can be easily removed with SIG CA
Debonder.
❑
15) Next, the horizontal stabilizer/elevator assembly is glued
permanently onto the fuselage. To allow enough time to properly
align the stabilizer, we recommend using slow drying SIG Epoxy
Glue for this step.
a) Begin by first mounting the wing to the fuselage using the
provided 4-40 x 1" nylon wing bolts. Place the model on a
flat surface that lets you view it directly from the front.
b) Set the stabilizer in place on the fuselage. Use a small
weight or pins to hold the stabilizer in position. View the
model from the front to see if the stabilizer is properly
aligned with the wing and fuselage, without tilting to one
side or the other. If necessary, take the stabilizer back off
and make slight adjustments to the fuselage where the
stabilizer sits, with a sanding block, until the stabilizer will
sit level.
c) Remove the stabilizer. Mix a small amount of epoxy glue
and apply it to the mating surfaces of the fuselage and
opening in the plywood tray, so that the ends of the servo
arms line up with the plastic pushrod tubes already installed
in the fuselage.
b) Once you have the servos correctly positioned, drill small
pilot holes through the plywood for each servo mounting
screw - we used a small pin vise and a .040" (#60) drill bit
to make these pilot holes. Then, use a small screwdriver to
install the servo mounting screws.
❑
10) Determine which of the long pre-bent pushrod wires is for
the elevator (right side) and which is for the rudder (left side).
Notice in the next picture that the Z-bend in the end of the pushrod
will be installed up through the bottom of the servo arm and that
the V-shaped adjustment bend goes towards the outside of the
fuselage. Using these two criteria, you can determine which
pushrod is for the elevator and which is for the rudder. Once you've
got them properly identified, slide the pushrod wires inside the
appropriate plastic pushrod tubes in the fuselage.
❑
11) Remove the servo arms from the servos. Install the servo
arms on the Z-bend ends of the pushrod wires (if the holes in your
servo arm are too small for the wire, drill out the holes with a #60
or 3/64" dia. drill bit). Then, reinstall the servo arms back onto the
servos - do not tighten the servo arm screws completely yet
because the arms may have to be repositioned when the radio
system is tested and centered.
TAIL SURFACES:
For this section you will need the horizontal stabilizer/elevator
assembly, the vertical fin/rudder assembly, and 2 nylon control
horns.
❑
12) As received, the elevator is only temporarily attached to the
stabilizer with 4 unglued CA hinges in the pre-cut slots. Refer back
to page 3, step 4 of this manual for instructions on gluing CA
hinges and use the same procedures described there to glue the
elevator hinges permanently in place. Let the glue dry a minimum
of 10 minutes before flexing the hinges.
7
Summary of Contents for KADET EP-42B
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