GRAUPNER DISCUS 2CT Building Instructions page 21

The elevator horn (21) is connected to the pushrod and glued to the elevator using the same
method as described for the rudder horn.
Tip: if the elevator is still excessively stiff, cut away the areas of the hinge marked black in
the photo.
The photo shows the canopy (13) with the fixings (14) to (17). Glue parts (14) and (17) to the
ends of the canopy; parts (15) and (16) are installed in the fuselage - these parts are shown
in the stage photo "RC installation". You may need to cut a notch in the canopy using a balsa
knife to clear the servo connector; this is shown in the photograph.
The illustration shows the wheel box components. Glue the parts together, taking care to
avoid glue running into the wheel bearings.
The wheel box assembly glued in the underside of the fuselage.
The wing
Glue the spar (29) in the wing, and apply a length of adhesive tape over the channel.
Slide the finished wing into the fuselage from one side and set it exactly central.
The RC installation
The first photo shows the installation of the LiPo battery and the receiver in Version 3 - the
electric model. The PICO 8 speed controller is located below the receiver. The RC system is
switched on by connecting the BEC plug and socket, as shown in the picture. If you remove
the motor pylon, the LiPo battery is used as the receiver battery. The BEC system of the
PICO 8 speed controller can supply current to up to three servos, and is designed for two ore
three LiPo cells.
Notes on the use of three LiPo cells for the powered version
This model aircraft is primarily intended for a two-cell LiPo pack, but if you wish to use a
three-cell battery, such as Order No. 7621.3BEC, please note the following point:. Please
remember that the motor should only be run for brief periods with a three-cell LiPo pack,
otherwise the SPEED 300 motor in the motor pylon, Order No. 9401.22, will be overloaded
even if effective cooling measures are taken.
This picture shows the RC installation in Version 2 - the glider - with an additional servo
installed for the aero-tow release. Glue parts (8), (9) and (10) together using cyano. In this
version the receiving system is switched on by plugging the receiver battery into the receiver
socket marked B/T.
Decals
It is not necessary to paint the SOLIDPOR® foam components. If you wish to apply a colour
finish, this is possible using GRAUPNER LEXACOLOR spray paints, Order No. 945... Wipe
the foam surfaces with cellulose thinners, Order No. 1409, beforehand to improve paint
adhesion; don't sand the surfaces.
Cut out and apply the self-adhesive decals (30) to complete the model.
Balancing
The model should be balanced in its fully-assembled state, ready to fly, i.e. with the complete
RC system installed.
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler! Id.-Nr. 0059520 5/2009
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