Hangar 9 P-51D Blue Nose 60 ARF - Manual (Page 12)

22 Hangar 9 P-51 Mustang 60 ARF Assembly Manual 23 Hangar 9 P-51 Mustang 60 ARF Assembly Manual
 Step 4
Use a #1 Phillips screwdriver to remove the servo horn from
the servo. Position the servo on the cover. Use the lines for
aligning the servo on the cover.
 Step 5
Use a pencil to mark the position for the second servo
mounting block on the servo cover.
Hint : Use a 1/32-inch (.5mm) spacer between the
servo and flap servo cover before marking for the servo
mounting screws to set the correct spacing.
 Step 6
Use medium grit sandpaper to scuff the ends of two servo
mounting blocks as shown.
Sand this end
 Step 7
Mix a small amount of 30-minute epoxy. Apply the epoxy
to the end of the blocks that were sanded in the previous
step. Position the blocks on the servo cover using the marks
made previously. Use small clamps to hold the blocks tightly
against the servo cover until the epoxy fully cures.
 Step 8
Use the radio system to center the flap servo. If your radio
uses a three-position switch, set the switch in the center
position. If you have a two-position switch, setting the
throws to 0% for both positions will also center the flap
servo. Install a servo horn on the flap servo that has a hole
13/32-inch (10mm) from the center of the horn. Install the
horn on the flap servo as shown.
Hint : Most servos have an odd number of splines. If
the horn is not aligned correctly as shown, you can
rotate it 180 degrees to bring it into alignment.
 Step 9
Use side cutters to remove any arms that will not be used
from the servo horn. Trim the horn down leaving only the
hole that was 13/32-inch (10mm) from the center of the
horn.
 Step 29
Use a drill and 1/8-inch (3mm) drill bit to drill two holes
through the gear door as shown. Use care not to tear the
covering when drilling through the gear door.
Hint : Placing the gear door on a piece of wood while
drilling will minimize any possibility of damaging the
covering.
 Step 30
With the gear in the “up” position, attach the gear door
to the gear door mount using two 3mm x 8mm machine
screws and two 3mm washers. Use a #2 Phillips screwdriver
and threadlock to install the screws.
Hint : If the gear door does not align, loosen the screws
to reposition the gear door or loosen the setscrew on
the gear door mount to align the trim scheme. If that
does not work, the holes can be enlarged slightly to
make minor adjustment to the alignment.
 Step 31
Repeat Steps 1 through 30 to install the retract mechanism
in the remaining wing panel.
Flap Servo Installation
Required Parts
Wing panel (right and left) Servo mounting block (4)
2-inch (52mm) safety tubing
6-inch (152mm) threaded pushrod (2)
#2 x 3/8-inch sheet metal screw (8)
Servo (2)
Receiver
Transmitter Receiver battery
Pushrod keeper (2) Clevis (2)
Tools and Adhesives
30-minute epoxy Sandpaper
Mixing stick Pencil
Clamp (2) Medium grit sandpaper
Ruler Phillips screwdriver: #1
Side cutter Thin CA
Hobby knife with #11 blade Pliers
T-pin
Drill
Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm)
Rotary tool and cutoff wheel
 Step 1
Place the flap servo cover in position on the wing. Use a
ruler and pencil to make a mark that is 1 1 /
32
-inch (27mm) in
from the edge of the cover near the retract. Make a second
mark that is 1 7 /
16
-inch (37mm) in from the edge of the cover
near the root of the wing.
 Step 2
Remove the cover and transfer the marks to the bottom side
of the cover. Draw a line that connects the two marks. This
will be used in aligning the position of the servo.
 Step 3
Measure 15/16-inch (23mm) from the edge that was
toward the trailing edge of the cover. Draw a line that is
perpendicular to the first as shown.