GRAUPNER DISCUS 2CT Building Instructions page 20

epoxy resin adhesives, as these glues do not produce durable joints between any of
the kit materials and the SOLIDPOR® high-density foam.
Fuselage, tail surfaces and canopy
Glue the fuselage reinforcement (3) in the right-hand fuselage side (1), then fit both the
snake outer sleeves (4 and 5); note that they should project by 10 mm at the front end. If you
wish to build the glider version with aero-tow release, do not glue the nose reinforcement (6)
in place.
Remove the unwanted arms from the cruciform servo output devices, and set them to centre
(neutral) using a servo tester or the RC system.
The photo shows the two C131 servos installed in the fuselage. This is the procedure: first
connect the pre-formed end of the steel pushrods (18) and (20) to the servo output arms,
then slip the pushrods into the snake outers before fitting the two servos in the fuselage
shell. Push the servos forward, and secure each with two drops of cyano. Caution: on no
account use thin (low-viscosity) cyano, or an excessive quantity of glue, as the
adhesive could then run into the servos and jam up the mechanism.
Order No. 7890.1
The photo shows the aero-tow mechanism (required for Version 2) installed in the fuselage
side. The fuselage nose reinforcement (6) is not required for this version.
The illustration shows the method of opening up the top of the fuselage to accommodate the
pylon base shells (26) and (27). This, and the following procedure, are only required for
the electric model, Version 3.
Note: it is important to shorten the BEC lead (included in Order No. 9401.22) as shown,
and solder the wires to the gold-contact sockets (included in Order No. 9401.22) before
installing these parts. Glue the gold-contact sockets in part (26), taking care not to allow
any glue to run inside the sockets. The pylon base shells can now be glued in the prepared
fuselage. Glue the BEC lead in its channel.
The picture shows both fuselage shells prior to joining. Caution: the next step calls for
considerable concentration. Take great care not to allow adhesive to run onto the
pushrods or into the snake sleeves. Glue the fuselage shells together. Keep some paper
towel handy, and wipe off excess adhesive immediately.
Flex the rudder to and fro repeatedly to free up the integral foam hinge. Place the rudder
horn in its recess, and mark the point on the rudder pushrod (18) where it crosses the linkage
hole. Bend the pushrod end to the shape shown.
Connect the rudder horn to the pushrod, and glue the horn in the recess in the rudder. Tip: if
you are relative beginner to model flying, use the outer linkage hole as shown. If you want a
more lively rudder response, use the middle hole of the three.
Flex the elevator - attached to the tailplane (12) - to and fro repeatedly, moving it to the limits
of travel, until the integral hinge operates freely. The tailplane can now be glued to the top of
the fin: check that it is exactly central and at right-angles to the fin by sighting over it from the
nose and from above.
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler! Id.-Nr. 0059520 5/2009
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