Manual Multiplex Mini Mag 21 4211 (page 22 of 56) (English, German, French, Italian, Spanish)

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Specification:

Wingspan 1010 mm

Fuselage length overall 820 mm

All-up weight min. 580 g

Wing loading (FAI) min. 26 g/dm²

Power system min. Permax 400 6V

RC functions Elevator, rudder

and throttle; optional ailerons

Important note

This model is not made of styrofoam™! It is

not

possible to glue the material using white glue or

epoxy. Please be sure to use cyano-acrylate glue

exclusively, preferably in conjunction with cyano

activator (“kicker”). For all joints use medium-viscosity

cyano-acrylate (“cyano”). When gluing Elapor®

always use this procedure: spray one surface with

activator, allow it to air-dry, then apply cyano to the

other side. Join the parts and position them accurately

immediately.

Please take care when working with cyano adhesives.

These materials harden in seconds, so do not allow

them to get onto your fingers or other parts of your

body. It is important to wear goggles to protect your

eyes. Keep the adhesive out of the reach of children.

1. Before starting construction

Please check that the contents of your kit are complete.

You will find Figs. 01 + 02 and the Parts List helpful for

this.

2. Preparing the control snakes

Check the length of the elevator snake tubes 43 and 45

and shorten them if necessary.

43 3 / 2 Ø x 275 mm

45 2 / 1 Ø x 300 mm

Steel 41 0.8 Ø x 355 mm

Repeat the procedure with the rudder snake tubes 44 and

46.

44 3 / 2 Ø x 225 mm

46 2 / 1 Ø x 275 mm

Steel 42 0.8 Ø x 325 mmplease insert!

3. Installing the snakes in the fuselage shells

Caution: it is important to glue the snake outer sleeves 43

and 44 to the fuselage shells over their full length, as this

increases the strength of the tail boom considerably.

Check that the control snakes work smoothly, and be careful

not to allow any glue to run inside the outer sleeves.

4. Left-hand fuselage shell:

Trim the shell using a balsa knife, as shown in Fig. 03.

Position the snake outer sleeve 43 in the front of the fuselage

shell, as shown in Fig. 05. Lay the shell down flat, and

glue the outer sleeve 43 to the external channel over its full

length, using cyano.

Installing the servo

Set the servo to neutral (centre) from the transmitter, and

fit the output arm on the output shaft at 90° to the servo

case. Connect the pre-formed end of the steel elevator

pushrod to the second hole from the inside of the servo

output lever. Slip the inner tube 45 over the steel pushrod,

and slide both into the outer sleeve 43 from the servo end.

Fig. 05

Fit the servo in the left-hand fuselage shell from the side as

shown. If you wish to use different servos, it may be

necessary to make minor adjustments here. Tape the servo

lead in the fuselage, so that it does not get in the way

when gluing the fuselage shells together. Glue the servo to

the fuselage with a drop of hot-melt glue at each mounting

lug. Fig. 05

Glue together the wing bolt support components 33 / 34. If

finger power is not sufficient, press them together using

combination pliers, then glue the assembly in the fuselage

shell.

Place the latch clip 22 for the Canopy-Lock canopy retainer

in the fuselage in such a way that the latch lug 23 fits

between the clip 22 and the fuselage side: spray activator

in the recess in the fuselage and allow it to air-dry. Now

apply cyano to the joint surfaces of the latch clip and position

it immediately. Apply more glue to reinforce the joint if

necessary. Fig. 07

5. Option

If you wish, you can fit a tailwheel to your model. This is

actually necessary if you intend to fit floats at a later date,

as a water rudder is absolutely essential for this version,

and this uses the installed tailwheel wire. Figs. 09 - 13

show the procedure.

You will find a bending template in Figs. 12 + 12a. The

steel wire should be 1.3 mm Ø. The tube required is the

remainder of part 44. Cut the water rudder to shape from 3

mm Depron, and fix it inside the steel wire frame using

adhesive tape. Cut a V-notch in both fuselage shells to

accept the wire, as shown in Fig. 10, and pierce a hole in

the tailplane for it; Fig. 11. If you fit the tailwheel, the integral

foam tailskid on the fuselage should be cut off. Cut a slot

in the rudder for the driver wire; Fig. 10.

6. Right-hand fuselage shell:

Trim the shell using a balsa knife, as shown in Fig. 04.

Position the snake outer sleeve 44 in the front of the fuselage

shell, as shown in Fig. 06. Lay the shell down flat, and

glue the outer sleeve 44 to the outer channel over its full

length, using cyano.

Installing the servo

Set the servo to neutral (centre) from the transmitter, and

fit the output arm on the output shaft at 90° to the servo

case. Connect the pre-formed end of the steel rudder

pushrod to the innermost hole of the servo output lever.

Slip the inner tube 46 over the steel pushrod, and slide

both into the outer sleeve 44 from the servo end. Fig. 06

Glue the canopy latch clip in place; Fig. 08

7. Joining the fuselage shells

Start with the right-hand fuselage shell 4. We recommend

medium or thick cyano for this stage.

The fuselage shells 3 and 4 can now be glued together.

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Multiplex Mini Mag 21 4211 Manual

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