Model Tech SE5a SCOUT Instructions For Final Assembly page 25

STEP 4: INSTALLING THE RUDDER PUSHROD ASSEMBLY
The rudder pushrod assembly is installed in the same manner as the elevator pushrod assembly was installed. Begin
by using a modeling knife to cut away and remove the covering material from over the rudder pushrod exit hole in the right
side of the fuselage. The hole is located 3-3/4" in front of the rudder hinge line and 7/8" below the bottom of the horizontal
stabilizer.
Connect your radio system and plug the rudder servo into the receiver. Double-check that the rudder trim lever on your
transmitter is centered.
PRO TIP
Before installing the control horn in the next procedure, drip several drops of thin C/A into the pilot holes
and allow the C/A to fully cure. The C/A will harden the surrounding balsa, making the mounting area stronger.
Install the control horn and backplate using two M2 x 10mm machine screws, being careful not to overtighten them.
Use a couple of pieces of masking tape, taped between the rudder and the stabilizer, to hold the rudder centered.
Remove the masking tape from the rudder and double-check that the servo wheel and the rudder are still centered.
If the rudder is not centered, adjust the clevis until it is. Move the rudder right and left several times to ensure that the
pushrod assembly does not bind. It should operate smoothly.
Install the Z-Bend in the remaining pushrod assembly into
a hole that is 5/16" out from the center of a plastic servo wheel.
Slide the threaded end of the pushrod assembly into the
preinstalled pushrod housing from inside the fuselage, then
install the servo wheel onto your rudder servo, making sure
that it's centered. The pushrod wire should be toward the
fuselage side, as shown.
Install the servo horn retaining screw to secure the servo
wheel to the servo.
Position the remaining nylon control horn onto the right
side of the rudder. When aligned properly, the centerline of
the control horn should be 7/8" up from the bottom of the
rudder (at the hinge line) and the clevis attachment holes should
be lined up over the hinge line. The base of the control horn
should be parallel to the rudder hinge line, too, so that it lines
up with the pushrod assembly.
When satisfied with the alignment, mark and drill 5/64"
diameter pilot holes through the rudder for the control horn
mounting screws.
Thread one nylon clevis onto the pushrod wire and snap
the clevis into the outermost hole in the control horn.
Hold the pushrod assembly with a pair of pliers to prevent
it from turning while installing the clevis.
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