Bedienungsanleitung Multiplex Mini Mag 21 4211 (Seite 24 von 56) (Deutsch, Englisch, Französisch, Italienisch, Spanisch)

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18. Installing the undercarriage

Fit the wheels 71 on the main undercarriage unit 70, using

two collets 72 to retain each one. Fig. 33. Squeeze the

undercarriage together gently, push it into the support 74

and allow it to snap into place. Fig. 34

Completing the wings

19. Installing the spar

Fit the spar tubes 40 in the spar joiner 31, secure them

with glue and trial-fit them in the wing. Apply cyano to the

spar channel in the wing, then push the spars and the spar

joiner quickly into place. Set the wing straight before the

adhesive has a chance to cure. Sight along the wings from

each tip to check for unwanted warps.

Fig. 35

Optional ailerons

If you wish to fly the model in rudder / elevator form, simply

skip points 19 - 22. The servo wells can be sealed (later)

using the decals provided.

With the standard dihedral the model flies very well with

rudder or ailerons as the primary turning control. It is also

possible to fit ailerons to the wing at any time.

If you wish to fly the model with ailerons (“full-house” control),

resume construction at this point:

20. Freeing the ailerons, installing the aileron servos

Cut a slot at both ends of the ailerons, which are attached

to the wing 6. Work the ailerons to and fro repeatedly to

free up the hinges; they will eventually move relatively easily.

Take care not to separate the control surfaces!

Fig. 36

21. Installing the aileron servos

Set the servos to neutral from the transmitter. Fit the output

arms on the servos so that the arms are at 90° to the servo

case - 1 x left, 1 x right.

Check that the servos fit snugly in the recesses in the

wings 6. You may need to make minor adjustments to suit

the servo type you are using. Apply a drop of hot-melt glue

to the slots in the wing for the servo mountings lugs, and

press the servos into the recess immediately. Apply another

drop of glue if necessary.

Fig. 37

22. Deploying the aileron servo leads

Deploy the servo leads along the wing towards the centre

section. The lead must fit in the front edge of the spar

channel and run perfectly straight, standing “on edge”. The

leads should project by about 120 mm at the wing root, so

that you can comfortably connect the plugs to the receiver

when the model is assembled. You may need to extend

the standard servo leads. Secure the leads at the centre of

the wings with a drop of hot-melt glue.

23. Attaching the aileron horns

Fit the pushrod connectors 25 in the outermost hole of the

aileron horns 24. Secure the connectors using the washers

26 and nuts 27. Caution: make a handed pair: 1 x left, 1 x

right. Tighten the nuts gently until the connectors swivel

smoothly, but without slop, then apply a tiny drop of cyano

to the outside of the nuts on the point of a pin. Fit the

socket-head grubscrews 28 in the pushrod connectors 25

using the allen key 29; do not tighten them at this point.

Apply activator to the recesses in the ailerons and glue the

horns 24 in them with the row of holes facing the hinge line.

Fig. 38

24. Installing the aileron pushrods

Connect the pre-formed end of the steel pushrods 30 to the

innermost hole of the servo output arm, and fit the plain

end through the pushrod connector 25 on the aileron horn.

Set the aileron and servo to neutral (centre), and tighten

the grubscrew 28 to secure the pushrod.

Fig. 39

25. Attach the wing to the fuselage using the screw 32.

Fig. 40

26. Installing the radio control system components

The next step is to install the remaining radio components

and the flight battery in the cabin area. Keep one eye on

the recommended Centre of Gravity position when

positioning these items; see Fig. 43.

You can correct the CG position by adjusting the location

of the flight battery.

Pieces of Velcro tape 20 + 21 are supplied in the kit for

securing these components. Please note that the adhesive

on the tape is not very strong, and we recommend that you

stick the tape in the fuselage with cyano for additional

security.

Fit the receiver behind the wing screw, standing upright.

Run the aerial wire out of the fuselage and tape it in place.

The speed controller should be positioned immediately aft

of the motor.

The motor supplied in the kit features internal suppressors,

and these are adequate if you are using a MULTIcont X-16

speed controller, # 7 2271.

If you prefer to use a different controller, it is in your own

interests to fit additional suppression measures to the

electric motor. A suitable suppressor set is available under

# 8 5020. Solder one 47 nF capacitor between one motor

terminal and the motor can, and a second one between the

other terminal and the can. The third 47 nF capacitor should

be soldered across the terminals to form a bridge.

Installing the propeller

The next step is the initial test-run of the motor, but first the

propeller must be fitted. The procedure for this varies

according to the power system you have installed. However,

please be sure it is firmly located in every case. In the

standard version the spinner and propeller should be

secured with a drop of adhesive and glued to the motor

shaft. Use 5-minute epoxy with a Guenter propeller, and

cyano with an MPX prop.

Once the wiring is complete, you are ready to carry out the

first test-run.

Multiplex Mini Mag 21 4211 Seite 24

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