Seite 11
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 superfi 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 specifi 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 fi 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 specifi 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’ signifi 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 fi 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-fi nish paints produce the best visual effect.
Technical information Extra 300 S:
Wingspan 1200 mm
Overall lengh 1086 mm
All-up weight 1450 g
Wing loading 39 g/dm²
RC Functions rudder, elevator, aileron, motor
Time of fl ight: ca. 7 min
Note: please remove the pictures from the center of the instructions!
