Bedienungsanleitung Multiplex Blizzard 21 4233 (Seite 4 von 16) (Deutsch, Englisch, Französisch, Italienisch, Spanisch)

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Like any other aircraft, this model has static limits! Steep dives and silly, imprudent manoeuvres may cause structural

failure and the loss of the model. Please note: damage caused by incompetent flying is obvious to us, and we are not

prepared to replace components damaged in this way. It is always best to fly gently at first, and to work gradually towards

the model’s limits. The aircraft is designed to cope with our ‘Tuning’ (upgrade) power system, but is only capable of

withstanding the flight loads if it is built exactly as specified, and is in perfect structural order (i.e. not damaged). Further

upgrade measures are possible, but should only be attempted if you have plenty of experience in this field, as additional

structural reinforcements will be required.

Important note

This model is not made of styrofoam™, and it is not possible to glue the material using white glue, polyurethane or epoxy;

these adhesives only produce a superficial bond which gives way when stressed. Use medium-viscosity cyano-acrylate

glue exclusively, preferably our Zacki-ELAPOR®, # 59 2727 - the cyano glue optimised specifically for ELAPOR® particle

foam.

If you use Zacki-ELAPOR® you will find that you do not need cyano ‘kicker’ or activator for most joints. However, if you

wish to use a different adhesive, and are therefore obliged to use kicker / activator spray, we recommend that you apply

the material in the open air as it can be injurious to health.

1. Before assembling the model

Please check the contents of your kit before you start working on

it.

You will find Figs. 1 + 2 and the Parts List helpful here.

Note: the GRP spar caps and fuselage longerons 11.1 - 11.9 are

supplied in the kit in the form of a continuous strip 11 (8.5 m

long), which has to be cut to length: take the dimensions of each

strip directly from the component, and cut them to length using

side-cutters immediately before gluing them in place. The

approximate lengths are stated in the Parts List.

2. Preparing the fuselage

Lay the right-hand fuselage shell 4 down flat on the workbench

(table). Cut the longeron 11.5 to length and glue it in place as

shown, applying cyano along its whole length. Wipe off excess

adhesive immediately using a cloth.

Fig. 03

Repeat this procedure with the left-hand fuselage shell 3.

Caution:

It is absolutely essential that the fuselage shells are straight

when you install the GRP longerons. If you make a mistake at

this point, it will be impossible to correct it later!

3. Preparing the wing retainer plate 40

The first step here is to solder two servo leads, # 8 5133, to the

M6 MULTIPLEX high-current plug, # 8 5213, as shown in Fig. 04.

Carefully separate the servo ribbon cable into its individual

colours using a pair of side-cutters. Strip a little insulation from

the wire ends, and tin (apply solder to) the bare conductors. Tin

the individual contacts of the M6 plug. Slip a piece of heat-shrink

sleeve over each wire, and solder the wire ends to the contacts

in the arrangement shown in Fig. 4. Slip the sleeves over the

soldered joints and shrink them in place using a heat-gun or

similar.

Note that the M6 plug and socket should be fitted together before

you carry out the soldering - this ensures that the contacts take

up their optimum position.

Tin the contacts of the plug, solder the wires to the contacts, and

shrink the sleeves over the soldered joints. Position the plug

carefully and glue it in place. Push the nuts 32 into the wing

retainer plate 40 until they snap into place.

The standard wire colours of UNI servo leads:

red red +

black brown -

yellow orange

4. Fitting out the fuselage

Now we turn to the right-hand fuselage shell 4. First cut the inner

fuselage longeron 11.8 to length, and glue it in place using cyano.

The next step is to glue the canopy latches 22 in place, taking

care to position them accurately. Glue the prepared wing retainer

plate 40 in place with the projecting spigots flush at the top.

Deploy the leads as shown, and tape them to the fuselage sides.

Repeat this procedure with the left-hand fuselage shell 3 - with

the exception of the wing retainer plate 40. Fig. 05

5. Preparing the servo installation in the fuselage

The Blizzard features a V-tail which can be actuated using a

single servo (‘elevator’ function only; no rudder) or two servos. In

the former case there is no need to cut away additional material,

as shown in Fig. 06. If you wish to use both functions of the V-tail

(rudder and elevator), a second servo is required. In this case

you have to open up the additional servo well using a balsa

knife.

Fig. 06

The servo cases can now be sealed with adhesive tape, and

glued in their recesses as shown in Fig. 07. Before you do this,

use side-cutters to remove the superfluous arms from the servo

output levers, and snip off the servo leads close to the plugs.

Lengthen the cables by soldering 300 mm extension leads to

them; insulate each soldered joint with a separate heat-shrink

sleeve.

6. Completing the fuselage

Check that the fuselage shells fit together accurately, then glue

them together using cyano.

Fig. 08

7. Installing the nose fairing / motor bulkhead

Sand off the moulding pimples from the area of the fuselage

where the nose fairing / motor bulkhead 13 will fit. Apply cyano to

the mating surfaces, and glue the fairing / motor bulkhead 13 in

place, taking care to position it accurately. Press the fuselage

against the fairing 13 from the inside while the glue is setting.

Fig. 09

8. Installing the rear fuselage fairing

Here again sand off the pimples at the joint areas. Apply cyano to

the mating surfaces, position the fuselage fairing 14 carefully,

and hold it firmly in place until the adhesive hardens.

Fig. 10

9. Preparing the V-tail panels 7 + 8

Cut a slot about 1 mm wide at the end of each V-tail panel to

release the control surfaces, but take great care not to cut right

Multiplex Blizzard 21 4233 Seite 4

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