MULTIPLEX Heron Instructions d'exploitation télécharger pdf (Page 17)

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 supercial joints, and simply break away under stress. Please be sure to use

medium-viscosity cyano-acrylate glue exclusively, preferably Zacki ELAPOR® # 59 2727, which is optimised specically

for ELAPOR® particle foam. If you se Zacki ELAPOR® there is usually no need for cyano ‘kicker’ or activator. However,

if you wish to use a different adhesive which requires the use of activator, please note that these materials are injurious

to health, and should always be applied in the open air. Take care when handling all cyano-acrylate adhesives, as they

harden in seconds, so don’t get them on your ngers or other parts of the body. We strongly recommend the use of

goggles to protect your eyes. Keep the adhesive out of the reach of children! For certain joints it is also possible to use

hot-melt adhesive; the instructions indicate where this is the case.

Working with Zacki ELAPOR®

Zacki ELAPOR® has been developed specically for glued joints in our models which consist of moulded ELAPOR®

foam parts.

Please observe the following points in order to obtain perfect joints:

• Avoid the use of activator. ‘Kicker’ signicantly weakens the joint. We advise leaving joined parts for 24 hours to obtain

maximum strength, particularly when the glued area is large.

• Activator should only be used for temporary, small-area joints (‘tacking’). Spray a little activator on one surface, and

allow it to air-dry for about thirty seconds.

• To obtain maximum joint strength you should lightly sand the surface with 320-grit abrasive paper before applying glue.

Bent parts - actually don’t exist. If you nd that a component has taken up a curve, perhaps after being trans-

ported, it is easy to straighten again. In this respect ELAPOR® behaves in a similar way to metal: bend the

component back slightly beyond the correct position, and the material will then spring back to its proper shape

when released, and maintain it. There are limits, however - don’t overdo it!

Bent parts - really do exist. If you wish to paint your model, apply MPX Primer # 60 2700 to the surfaces, wiping it on

very lightly as if you were cleaning the model. Paint must always be applied thinly and evenly, otherwise the component

will warp. Then you really will have bent parts, and they will also be heavy and perhaps even unusable. We have found

that matt-nish paints produce the best visual effect.

Specication:

Wingspan 2400 mm

Overall length 1100 mm

All-up weight, glider min. 1350 g

All-up weight, electric min. 1550 g

Wing area approx. 41,3 dm² (FAI)

(FAI => wing + tailplane, excl. fuselage)

Wing loading min. 32,7 / 37,5 g/dm²

RC functions:

Elevator, rudder, ailerons, aps => (Buttery),

motor speed,

optional tow release

The Centre of Gravity is located at a point 65 mm aft of

the wing root leading edge (measured at the fuselage).

Note:

Please separate the pictorial pages from the centre of the

building instructions before you start construction.

1. Before starting construction

Please check the contents of your kit.

You will nd Figs. 1, 2 and the Parts List helpful here.

2. Cutting the GRP longerons to length

Use a pair of side-cutters to cut the 2 mm Ø x 800 mm GRP

rods 69 to the stated lengths to form the fuselage longerons:

1 x 243 mm / 1 x 282 mm / 1 x 218 mm / 2 x 326 mm.

Cut the 1.3 mm Ø x 650 mm GRP rods 68 to the following

lengths to form the stiffeners for the tailplane and n:

2 x 215 mm and 2 x 400 mm

Fig. 3

3. Gluing the fuselage longerons in place

When you have cut the fuselage longerons 69 to length,

they can be glued in the fuselage shells 3 and 4: the 326

mm longerons are tted to the sides at the front, while the

218 mm longeron is installed at front bottom in the right-

hand fuselage shell 4.

The 243 mm longeron should be glued in the turtle deck

of the right-hand fuselage shell. The underside aft of the

undercarriage is reinforced with the 282 mm longeron.

This is the procedure: rst allow a little Zacki ELAPOR®

to run into the channel, then press the longeron into place.

Finally run Zacki ELAPOR® super liquid along the length

of the channel.

Fig. 4

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 67 68

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MULTIPLEX Heron Instructions d'exploitation Page 17

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