Multiplex Magister Notice De Construction page 26

GP:
Installing the throttle servo and throttle pushrod for the
glow motor, connecting the linkage
Assemble a pushrod connector consisting of parts 25, 26, 27
and 28 for the throttle servo which controls the glowplug motor,
and mount the connector on the servo output arm. You will
need to drill out the output arm to 2.5 mm Ø to accept the
connector. Secure the nut on the pushrod connector with a
drop of cyano or 5-minute epoxy. Press the throttle servo into
the recess in the fuselage below the wing saddle, and secure it
with a little 5-minute epoxy applied to the top of the servo
mounting lugs.
Slip the throttle pushrod from the motor through the slot in the
firewall 42 to the pushrod connector on the throttle servo.
Connect the plastic clevis to the carburettor throttle arm, and
clamp the pushrod in the pushrod connector on the servo using
the allen key 29. The grubscrew 28 can be tightened by gripping
the allen key in a pair of pliers and passing it through the opening
in the wing mount.
Figs. 28 GP + 29 GP
GP:
Installing and connecting the fueltank
Select a suitable fueltank for the motor you intend to use, install
it in the model and connect it to the motor, referring to the
instructions provided by the motor manufacturer. It is important
to check that the tank fits in the available space in the fuselage.
When installing the fueltank note that the throttle pushrod must
run along the fuselage side to one side of the tank. You may
need to bend the pushrod slightly to clear the tank you are
installing.
Fig. 30 GP
Releasing the ailerons and rudder
The control surfaces are supplied still attached to the wing and
tailplane by means of one or two small, recessed lugs. The
particle foam itself acts as the hinge - no additional hinge tape
or similar is necessary. Remove the lugs by making two paral-
lel cuts spaced about 1 mm apart using a balsa knife. Flex the
control surfaces repeatedly up and down in order to free up the
hinge. Caution: take care not to separate the control surfaces
from the wing or tailplane at the hinge axis.
You may find that odd foam particles are missing along the
hinge line; this is of no importance, and is not grounds for
complaint.
Preparing the pushrod connectors
Fit the elevator and rudder pushrod connectors 25 in the
outermost hole of the horns 24 and secure them with the
washers 26 and nuts 27. Caution: note the correct orientation
of the connectors. Tighten the nuts carefully, ensure that the
connectors swivel smoothly, then apply a tiny drop of cyano
(on a pin) to prevent them shaking loose. Fit the socket-head
grubscrews (28) in the pushrod connectors 25 using the allen
key 29.
Figs. 31 + 3
Fit the pushrod connectors 25 in the second hole from the
outside of the aileron horns 24 and prepare them as described
above.
Caution: 1 x left, 1 x right.
Apply activator to the horn recesses in the elevator 14 and
rudder 15, and glue the prepared horns 24 in them using cyano.
Note that the row of holes must face the hinge line. Caution:
check correct horn orientation.
Figs. 31 + 33 + 38
26
Attaching the tail panels
Glue the fin 15 in the recess in the fuselage, taking care to set
it exactly at 90° to the wing and tailplane saddles. Check first
and trim if necessary.
Fig. 32
Glue the plastic bushes 35 in the tailplane 14, flush with the top
surface. Fix the tailplane to the fuselage using the screws 31
and check that it is correctly positioned (90° to the fin, parallel
to the wing saddle). The screws can be tightened using the
plastic combination tool 79, or any standard screwdriver.
Fig. 34
Installing the servos in the fuselage
Set the servos to neutral (centre) from the transmitter and fit
the output levers on them with the arms at 90° to the long case
sides at neutral. Temporarily fit the servos in the sides of the
fuselage; you may need to make minor adjustments to suit the
servos you are using. Pierce the tunnels for the servo leads
using a round file or bradawl, and thread the leads through into
the fuselage. Shrink pieces of heat-shrink sleeve round the
servos (or wrap tape round them), then glue them in place.
Note: don't omit the tape or heat-shrink sleeve, otherwise the
glue may penetrate the servo case and jam the mechanism.
Fig. 35
Installing the linkages in the fuselage
The elevator and rudder linkages take the form of the snake
outer sleeves 51, the snake inner tubes 56 and the pre-formed
steel rods 46. Fit these parts together and connect the pre-
formed wire ends to the servo output arms.
Figs. 35 + 37
Connect the elevator and rudder pushrods to the servo output
arms at a lever length of around 13 mm (i.e. distance from
linkage hole to output shaft centre).
The nosewheel is steered by the rudder servo. Set the rudder
servo and nosewheel to neutral by screwing the clevis 72 in or
out.
Figs. 35 + 23
Fit the other end of the steel pushrods 46 through the cross-
holes in the pushrod connectors 25. Press the snake outers
into the channels in the fuselage. You will need to bend the
steel pushrod 46 at the rudder horn to obtain the correct angle;
use a pair of pliers for this.
Figs. 38 + 36
The snake outer sleeves 51 can now be glued to the fuselage
over their full length. Check that the snakes operate smoothly,
and take care to avoid glue getting into the outer sleeve. Finally
centre the servos and control surfaces again and tighten the
socket-head grubscrews 28 in the pushrod connectors 25.
The wing joiner system
Carefully glue the wing joiner covers 12 and 13 in the wing
panels 10 and 11, applying glue to the bottom and both sides.
Take particular care to keep the glue away from the surfaces
into which the wing joiner tube 45 will be fitted later. The next
step is to check that the joiner tube 45 fits, but not until you are
sure that there is no active adhesive inside the socket. It is a
good idea to spray activator into the opening and wait for it to
take effect. If you neglect this, you may find that the wings can
never be separated again!
Fig. 39
Preparing for installation of the aileron servo
Both ailerons are actuated by snakes from a single central servo
installed in the left-hand wing panel. This arrangement ensures