GREAT PLANES Spectra Instructions Manual page 28

servo rail. Do not push the front servo rail up tight against the
servo but rather leave about a 3/32" gap between the servo
"body" and the rear servo rail. This will give you enough
room to get the servos in and out without removing the rails.
Glue the front servo rail in place.
D 3. Position both of the servos together in the middle of
the rails and mark where the holes for the servo mounting
screws should be drilled. Remove the servos and drill 1/16"
holes where the marks are. Install the servos, with the wires
exiting forward, using the servo mounting screws that came
with the radio.
D 4. Cut three "arms" o f f of two X-type servo horns using
wire cutting pliers or a razor saw as shown in the sketch.
Install the two servo horns with the arms facing opposite
directions as shown on the plans. Turn on the radio and
operate the transmitter sticks to make sure the servo horns
turn freely without hitting each other or the fuselage sides. If
they hit, cut or sand them until they will operate freely. Turn
off the receiver first and then the transmitter.
IF YOU ARE NOT USING A THIRD CHANNEL FOR
THROTTLE CONTROL - JUST TAPE THE MICRO
SWITCH "CLOSED" AND SKIP AHEAD TO STEP 9.
D 5. Glue one of the 1/8" x 3/8" xl" Ply Throttle Servo
Rails (SPECF14) in place in the forward end of the slot. It
should be level and up against former F2. Use your servo to
space where the other servo rail should be and glue it in place.
Since this servo rail is only connected to the fuse side it will
have to be securely glued in place. A scrap of balsa can be
used underneath the rear rail to help brace it
D 6. Screw the #2 x 3/8" Sheet Metal Screw (SCRW024)
into a servo wheel, from the bottom, until there is only 1/8"
between the head of the screw and the servo wheel. Cut off
the exposed point and sand the top of the servo wheel smooth.
Install the horn on the throttle servo so that at full throttle the
screw is about 30 degrees past the middle of the servo body as
shown in the sketch.
D 7.
the micro switch as shown
in the sketch and cut a small
piece of the Double Sided
Tape (FTAP001) to fit the
micro switch. Stick the micro
switch to the servo as shown. Test the operation of the switch
by turning on your radio and moving the left transmitter stick
to make sure the switch is turning on and off as the horn
rotates. The switch should be depressed when the transmit-
ter stick is pushed towards the top of the transmitter. When
satisfied with the operation of the switch, turn off your radio
and secure the switch to the servo by wrapping with a narrow
strip of strapping tape.
D 8.
with your radio. Drill 1/16" holes in the rails for the screws,
but be careful you don't break the rails loose. Since there are
no forces applied to this servo, two screws, one on each side
as shown in the photo below will be enough to hold it in place.
2 X 3/8"
SCREW
The throttle servo can be facing either direction to suit your
installation.
D 9. Drill a 1/4" hole in the LEFT fuselage side, opposite
of the throttle servo approximately 7/8" below the top edge of
the fuse. Remove one nut and the two washers from the toggle
switch and install it as shown in the sketch and photo.
28
THROTTLE SERVO SHOULD ROTATE TO
HERE WHEN TRANSMITTER STICK IS IN
THE FULL THROTTLE POSITION
Bend the arm on BEND HERE
Install the throttle servo using the screws provided