Graupner
GmbH & Co. KG * Henriettenstraße 94-96 * D - 73230 Kirchheim/Teck
*
www.graupner.de
Stand: 2010
25
Note
: Quality cable sets, including connectors and
separation filters are available via the specialist
model trade; choose high quality components for
optimum reliability. In the case where flying leads
are used, take care always to handle the leads only
by the connectors. Don’t pull on the leads!
The basic airframe is now complete.
ARF
– customers should now proceed with the
installation of the radio control system.
ARC
– customers should no proceed with the
finishing/covering of the airframe.
Finishing
Attention! Your new ALPINA 4001 Elektro is
built using very sophisticated LTSCP (Load
Specific Covering Thickness Procedure) for
superb flying characteristics, but this also has
the effect of considerably enhancing the
thermal conductivity and as such particular
care must be taken to avoid excessive heat when
using heat-shrink covering films on the wings
and tail-plane. Use low temperature heat-
shrink covering films and make every effort to
avoid prolonged exposure to heat as the
Polystyrene cores can be destroyed if exposed to
excessive heat. Polystyrene starts to melt at
70°C!
Film covering –
all the wooden surfaces are
supplied pre-sanded, but will benefit from further
fine finishing prior to covering. Follow the
instructions provided with the covering materials,
always taking care to make all joins in the
direction of the air-flow.
As an alternative to our own high stable decorative
vinyl based covering material, we can also
recommend
Oracover
(Profilm)
covering
materials. When covering the control surfaces with
integrated Elastik Flaps (elastic hinges), take care
to apply the film with the moving surfaces fully
deflected so as not to restrict the movement
Fibre-glass finish
– for the ultimate finish to your
VORTEX, cover the wings and tail-plane with a
lightweight glass-fibre cloth and treat with a
suitable finishing resin. This involves a specialist
process which is well documented in the popular
model trade. Choose good quality materials and
follow the manufacturer’s instructions. Take care
not to add excessive weight!
DESIGN Models.
Our DESIGN range of models are supplied with
pre-printed graphics which are both lightweight
and durable. Please observe the following simple
steps to maintain the appearance:
•
TA-Film is stable up to a nominal
temperature of 70
0
C so care should be taken
not to expose the surfaces to excess heat. The
use of a normal hairdryer is all that is
required to soften the material should it
eventually become necessary.
•
The graphics are waterproof but are not
resistant to solvents. Clean your model with a
mild solution of soapy water applied with a
soft sponge and dry carefully to restore the
fine finish.
•
Do not under any circumstances use cleaning
products which contain concentrated alcohol
or acetone as a solvent.
