GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler! Ident-Nr. 0057999
Made in Thailand
04/2003
77
77
Thrust vectoring servo
−
The servo which actuates the thrust vectoring system is fitted as shown in (Figs.
42, 42b
), but only after the
turbine has been installed.
−
Fix the Servo-Lock (No. 41) in place using 2.2 Ø x 6.5 mm self-tapping screws.
−
Make up the pushrod from parts (No. 51, 53, 55, 57, 58), as shown in (Figs. 13, 13a,
42a, 42b
). Be sure to
secure all screwed joints with Loctite thread-lock fluid.
Fueltank
−
We recommend that you install the GRP fueltank, Order No. 130, which has a capacity of 2.6 l; this is the
simplest and safest method, as it is specially designed for this model, and is supplied complete with the
fixings required; see Figs.
33, 33a
.
−
Alternatively the model can accommodate fueltank bottles with a maximum diameter of 110 mm.
−
A low-cost solution is to use disposable PET bottles (plastic drinks containers), which are available in
various sizes and capacities. For this reason the kit contains two annular plywood formers; you will need to
trim these to suit the type of bottle you wish to use, and then glue them in the fuselage (Fig.
34b
).
−
You may need to cut three pieces about 330 mm long from 5 mm Ø CFRP rod (No. 67) and tape them in
the arrangement shown in (Figs. 19,
35
). It must be possible to push the fueltank bottle into the machined
holders in the fuselage, so that it is held firmly in position. You may need to use the annular formers for
additional support in any case, depending on the type and diameter of the bottles.
−
The fueltank must be secured (soft binding wire, cable ties) to prevent it shifting in flight.
−
Complete the fueltank as described in the turbine system instructions.
Turbine installation
−
Fix your turbine in the mounting clamp (Fig.
40
).
−
Position the turbine as shown in (Figs.
41, 41a, 41c
): the height offset must be corrected; the six plywood
spacers with a hole pattern matching the “Booster turbine clamps” can be used for this.
−
The thrust nozzle (conical part) of the turbine should be spaced about 3 - 5 mm away (Fig.
41a
). Check the
position of the turbine by sighting through the opening in the thrust vectoring pipe; adjust the position
carefully until it is centred precisely (Figs.
41, 41a, 41c
).
−
Check that the turbine is lined up accurately with the thrust vectoring pipe. Check by eye that the
turbine cone is symmetrically positioned relative to the opening of the thrust vectoring pipe (Fig.
41c
).
−
Now fix the turbine in the correct position using the self-tapping screws (No. 50) (Fig.
41b
); even better:
use M3 socket-head cap screws, M3 captive nuts and washers (No. 64, 66, 68).
Turbine electronics
−
The turbine electronics plate (No. 25) is mounted on the longerons inside the fuselage: engage the
electronics plate in the machined hook-shaped recesses in the longitudinal formers (Fig.
36
), and fix them
to the formers at the front using two 2.9 Ø x 9.5 mm self-tapping screws (No. 50). Important:
be sure to
drill pilot-holes (max. 1.5 mm Ø) beforehand
, to avoid splitting the material of the longitudinal formers
(Fig.
36
).
−
Wire up the turbine electronics as described in the turbine instructions, and fix the components to the
machined plywood plate (No. 25) using cable ties (No. 34, 34a), or your own preferred method as shown in
(Fig.
37
). Group the cables together using soft binding wire (No. 72).
−
Attach the turbine battery to the longitudinal former directly aft of the retract bulkhead, using cable ties
(No. 34a) and double-sided tape (not included in the kit). The arrangement can be seen in (Fig.
43
).
Servo - canard linkage
−
The tubes which act as the canard bushes are factory-fitted in the fuselage, but may have to be shortened
slightly to match the width of the actuating lever (Fig.
21
), so that the lever is virtually central between the
two tubes, without axial play. If the spacing is too wide, it can be corrected using the 13 Ø x 6 Ø x 1.5 mm
plastic washers supplied.
−
The canards can then be clamped to the actuating lever using four socket-head M3 grubscrews, after they
have been adjusted to line up with each other as accurately as possible.
−
The canard servo is installed in the longitudinal former / fuselage using the fixings supplied with it, as
shown in (Figs.
19, 23
).
−
Fix the ball-end bolt to the actuating lever using the socket-head screw and self-locking nut.
−
Fig.
22
shows in schematic form how the canard pushrod is assembled from the clevis, ball-link
(aluminium or plastic), threaded rod, socket-head screw, self-locking nut, M3 studding (threaded rod), and
5 Ø x 3 Ø carbon fibre stiffening tube.
