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GRAUPNER MEGA DRAGSTAR III Instructions De Montage page 15

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M2.5 screw and nut. TIP: to ensure that water cannot get inside the hull through the
screw-hole, apply UHU alleskleber (clear general-purpose adhesive) to the screw
before fitting it. NOTE: it is important not to alter the standard length of the receiver
aerial, i.e. if the steel whip aerial is, say, 30 cm long, the flexible aerial must be
shortened by the same amount.
17. The model can now be painted in the colour scheme of your choice, if you don't wish
to copy the scheme shown in the kit box illustration. Allow the paint to dry out
thoroughly before applying the decals: cut out the decals as accurately as you can,
using a sharp pair of scissors, and apply them to the boat in the arrangement shown
on the kit box. TIP: to help you apply the cockpit decal to the hatch cover (part 23),
place it in position with the backing film still attached, and mark the corners with a
pencil. Now remove the backing film and apply it; the markings will help you position
the cockpit decal correctly aligned.
18. Test the model's functions in turn. IMPORTANT: make sure there is nothing in the
vicinity of the propeller or other moving parts before you do this. Assemble the model
completely, ready to run, with the hatch sealed but the system not switched on. Invert
the boat and place it in water (e.g. the bathtub), to check the operation of the flood
duct: the model should right itself very rapidly. If this does not happen, you need to
move more weight outwards to the side of the flood duct, e.g. by re-positioning the
drive batteries.
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Water-cooling system
Our tests have shown that a water-cooling system is not strictly necessary if you use the
recommended power train and build the model exactly as described; this applies to the
Sport and S 14 power variants. If you wish to use a water-cooling system, install it using
your favoured method. NOTE: the motor mount supplied in the kit cannot be used for this,
as there is no space for a water-cooling jacket between the motor and the mount if you are
using a SPEED 700 motor. We do advise the installation of a water-cooling system for the
MONO 2 power variants; if you are using the motor, Order No. 6534, it is possible to use
the water-cooling coil, Order No. 3324. In this case there are no space problems if you use
the recommended motors.
Painting
We suggest that you ask your local model shop or a specialist paint dealer for
recommended paint types. As a basic rule we advise that you use the Graupner range
of colour paints, as these have been tested on a very wide range of surfaces.
Be sure to use ONLY paints of the same type and make, otherwise they might react
with each other, either dissolving the earlier coat, or causing unsightly bubbling. Be
particularly careful when combining spray can paints with types designed for brush
application; always check on some scrap material that the paints are compatible with
each other.
To obtain good paint adhesion, sand the surfaces lightly beforehand using fine wet-
and-dry paper (600-grit to 800-grit). Remove all traces of grease from the surfaces
using a non-greasy liquid detergent or meths. Try not to touch the cleaned surfaces
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