GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler 06/2009
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The rudder is actuated by means of pull-cables.
The fin / tailplane unit can now be fitted to the tail end of the fuselage using the
aluminium support tube and two plastic screws, as shown in the picture. Don’t
overtighten the screws; turn them just to the point where the assembly is held
securely on the fuselage, and cannot shift.
Press the rubber grommets and tubular metal spacers into the servo mounting lugs,
as described earlier for the wing-mounted servos. Drill pilot-holes and fix the servos
in the servo plate as shown, using the retaining screws supplied with them; drill pilot-
holes beforehand.
Slip the two elevator pushrods in the guide tubes, and connect the forward end to the
servos using the clevises provided. Set the servos and elevators exactly to centre
(neutral), then screw locknuts and clevises on the free ends of the two pushrods and
adjust them to the point where the elevators are at neutral when the clevises are
connected to the horns. Once again, apply a drop of UHU thread-lock fluid to prevent
the screwed parts working loose.
As mentioned earlier, the rudder is actuated by means of a pair of steel cables. Slip
them through the cross-holes in the ring-screws and secure the ends with crimp
sleeves as shown. Use a stout pair of round-nose pliers to crimp the sleeves; make
certain the cables cannot slip. Fit clevises and locknuts on the ring-screws, and
connect them to the rudder servo.
Now thread the free end of the cables through the guide tubes. Connect the clevises
to the linkage lugs on the rudder horns, then slip the steel cables through the cross-
holes in the ring-screws and crimp the sleeves as described earlier. Final adjustment
of the two pull-cables can be carried out later by screwing the clevises and locknuts
in or out as required. When you are satisfied that the system is working smoothly,
without slop, apply UHU schraubensicher to the locknuts to prevent them working
loose.
Installing the engine
We recommend that you remove the tail assembly from the fuselage before installing
the engine. This section describes the method of fitting the G 26 petrol engine, but
the general procedure is the same for any of the other recommended power plants.
The first step is to screw the engine to the motor mount arms; the distance between
the rear face of the motor mounts and the front face of the propeller driver should be
about 160 mm.
You will find one vertical and one horizontal guide line marked on the nose bulkhead:
the horizontal one indicates the centreline of the engine’s crankshaft. To obtain the
correct sidethrust, the engine should be offset to the left of the vertical line by 7 mm.
Mark the position of the motor mount holes on the nose bulkhead, and drill holes at
the marked points, using a drill large enough to accept the captive nuts supplied in
the kit. Fix the motor mounts to the nose bulkhead using the retaining screws
supplied with the mounts. Apply UHU schraubensicher to the screws to secure them.
