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STEP 2.6 – ADJUSTING THE WIRING
EXTENSIONS.
After the two flap servos and two aileron servos are
installed, work from the underside cavities in the center
section of each wing and gently pull the wiring harnesses
back until you have an loose length of wire in the center
section cavities. Be careful… leave an inch or so of loose
wire at the servo ends.
PAGE 8
TM
DEHAVILLAND BEAVER 120 ARF
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STEP 2.7 – INSTALLING AILERON
CONTROL HORNS AND AILERON CON-
TROL RODS.
Locate the flap and aileron control horn assemblies in the
wing parts bag. There will be four such assemblies. One
for each flap and one for each aileron. The control horn
assemblies consist of a metal bolt about 2 inches long, a
white plastic beveled washer, a white plastic T-nut, a metal
nut and a white plastic control horn with a hole in the
flange end of the horn.
Remove the four metal bolts from the four control horn
assemblies.
Place a white plastic beveled washer on the bolt so that
the flat side of the beveled washer is against the head of
the bolt. Insert the first bolt into the predrilled hole in the
left aileron working from the top surface of the aileron.
From the underside of the aileron apply a white plastic T-
nut to the bolt such that the shaft of the T-nut is towards
the head of the bolt. Tighten the T-nut so that the shaft of
the T-nut goes into the hole in the aileron. Use a small
crescent wrench to hold the T-nut and a screw driver to
turn the head of the bolt and tighten until the T-nut just
begins to seat into the covering and so that the bevel
portion of the beveled washer has sunk nicely and snugly
down into the hole in the top surface. Ensure that the bolt
will now securely move the aileron with no slack. Now
apply the metal nut to the bolt and tighten the nut down
and just into the white plastic of the T-nut. Apply Pacer Z-
42 Thread locker to the metal nut. Install the white plastic
control horn on to the bolt.
Locate the control rods with a clevis on each end in the
wing parts bag. They are approximately 4-1/2 inches long.
Working with your left aileron servo at a neutral center
position and the servo arm, take one of the control rods
and connect it between the left aileron servo arm and the
left aileron control horn. Adjust the servo arm, clevises
and left aileron control horn to perfect a secure connection
between the servo and the left aileron. Test the movement
and throw.
Repeat this procedure for the right aileron
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STEP 2.8 – INSTALLING FLAP CON-
TROL HORNS AND FLAP CONTROL
RODS.
Place a white plastic beveled washer on the bolt so that
the flat side of the beveled washer is against the head of
the bolt. Insert the first bolt into the predrilled hole in the
left flap working from the top surface of the flap. From the
underside of the flap apply a white plastic T-nut to the bolt
such that the shaft of the T-nut is towards the head of the
bolt. Tighten the T-nut so that the shaft of the T-nut goes
into the hole in the flap. Use a small crescent wrench to
hold the T-nut and a screw driver to turn the head of the
bolt and tighten until the T-nut just begins to seat into the
covering and so that the bevel portion of the beveled
washer has sunk nicely and snugly down into the hole in
the top surface. Ensure that the bolt will now securely
move the flap with no slack. Now apply the metal nut to
the bolt and tighten the nut down and just into the white
plastic of the T-nut. Apply Pacer Z-42 thread locker to the
metal nut. Install the white plastic control horn on to the
bolt.
Locate the control rods with a clevis on each end. They
are approximately 4-1/2 inches long. Working with your
left flap servo at a neutral center position and the servo
arm, take one of the control rods and connect it between
the left flap servo arm and the left flap control horn. Adjust
the servo arm, clevises and left flap control horn to
perfect a secure connection between the servo and the
left flap. Test the movement and throw.
Repeat this procedure for the right flap.
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STEP 2.9 – INSTALLING THE FOAM
SHEET.
Locate the white foam sheet that was included in the
master parts bag.
The foam is used to fill the gap between the fuselage and
the exposed portions of the forward wing roots. Cut the
foam in half and trial fit the pieces to the exposed wing
roots. Mark and cut the foam to fit. Attach the foam sheets
to the exposed wing roots using Pacer Dap-A-Gap-A-Goo
or clear silicone.
Set the completed wing assembly aside for now.
T- NUT
BEVELLED
WASHER
BOLT
CONTROL HORN
BOLT
T- NUT
FRONT
Metal retaining nuts not shown.
