Multiplex microJet Bauanleitung Seite 10

tie latches down into the foam adjacent to the motor mount.
Fig. 13
9. Connecting the motor
The next step is to deploy the motor power leads in the
fuselage; the arrangement varies according to the type
of controller you are using - "round" version mounted on
the motor, or a separate unit.
Since the motor is in the "pusher" configuration it must
be connected with reversed polarity, i.e. negative wire to
red spot on the motor, positive to black.
Caution!
Always reverse the motor between the speed
controller and the motor - not between the battery
and the speed controller (it's easily done - and it
wrecks the controller!)
The Micro-Jet's propeller 35 also operates in pusher
mode, so it must be turned round inside the spinner, i.e.
the plain side (no inscription) of the propeller should face
the motor. Fix the propeller to the motor shaft using 5-
minute epoxy or UHU Endfest 300 (slow-setting epoxy).
On no account use cyano for this!!! It makes the plastic
brittle, and the spinner will fall off!
Using a pin, apply a little adhesive to the inside of the
hole in the plastic spinner and push the propeller onto
the motor shaft. Pierce a hole through the spinner from
the rear, again using a pin, so that trapped air can escape.
10. Completing the top of the fuselage
Trim the vacuum-moulded motor cowl 9 to fit. Glue it in
place using Medium Zacki, or - better - short strips of
clear adhesive tape, to allow access to the motor for
maintenance. Figs. 14+15
Position the canopy 2 and the turtle deck 3 on the fuselage
together with the motor cowl 9, and mark the position of
the parts. Engage the latch lugs 23 in the latch retainers
22. Apply a very small amount of Medium Zacki in the
slots in the canopy 2 and immediately press it down onto
the latch lugs. Figs. 16+17
Caution:
If you use too much glue you will have a problem ...
The canopy will be closed for eternity!
11. Installing the fins
Check that the fins 4+5 are a close fit "dry", i.e. without
glue. If the joint surfaces do not match the profile of the
wing perfectly, remove any rough edges and sand slightly
to obtain a good fit. You will probably need to remove
some moulding "flash". Spray the joint surfaces with Zacki
activator and allow it to air-dry. Apply Medium Zacki to
the fin recesses in the top surface of the wing, and push
the fins into place. Check alignment immediately, and tape
the fins in place until the glue has cured.
Fig. 18
10
12. Final assembly
Glue strips of Velcro tape (hook side) 20 in the appropriate
positions on the inside of the fuselage, and attach the
loop side of the Velcro tape 21 to the corresponding
components which are to be held in place.
The RC system and power system components should
be positioned as follows:
Fuselage in the nose, followed by the flight battery and
speed controller.
The exact position of the flight pack cannot be established
at this stage, as it determines the model's balance point.
If you find that the Velcro tape does not hold the battery
securely, fit a wedge to jam it against the fuselage turtle
deck.
Check that the battery is securely fixed
before every flight!
Run the receiver aerial through the pierced hole in the
fuselage side and along the channel in the wing. Secure
it with adhesive tape.
The next step is to test the working systems, and this
requires all the electrical connections to be completed.
Never connect the motors until you have switched
on the transmitter, and have checked carefully that
the motor control stick is at "OFF".
Connect the servo plugs to the receiver. Switch on the
transmitter, check motor "OFF", then connect the flight
pack to the speed controller, and the speed controller to
the receiver. Your speed controller must feature a BEC
facility, i.e. an integral receiver power supply drawing
current from the flight battery.
Switch on the motor briefly and check the direction of
rotation of the propeller. Hold the model securely while
you do this, and remove any loose, lightweight objects
behind the model before the propeller does it for you.
Caution: even small motors and propellers are
capable of causing injury!
Once you have found a space for everything, the final
task is to glue the fuselage turtle deck 3 in place. Trial-fit
the moulding in conjunction with the canopy, and trim if
necessary to obtain a close fit. Spray Zacki activator on
the turtle deck and allow it to air-dry. Apply Medium Zacki
to the joint areas of the fuselage, then press the turtle
deck into place. Take care not to glue the deck to the
motor cowl or the canopy. Fig. 19
13. Elevon travels
The travel of the elevons must be set correctly to achieve
a balanced control response. When elevator is applied
(forward / back stick), both elevons should rise by about
12 mm when you pull the stick back, and fall by about 10
mm when you move the stick forward. Aileron travel should
be +/- 5 mm, i.e. there should be no differential. If you
like (and can fly) your models "hot", increase elevator
and aileron movement by 2 - 3 mm. Measure these travels