Advertisement
Fitting the wings to the fuselage, aligning the wings
The earlier KANGAROO features the same wings as the HARPOON, and experience with this model has
−
shown that it is best to fit and align each wing panel separately.
Fit the two 6.4 mm Ø brass tubes (No. 54) and the wing joiner tube (No. 55) through the pre-cut holes in
−
the fuselage (Fig. 15).
Fit the wings together as shown in (Fig. 15a) and secure the 6.4 mm Ø brass tubes (No. 54) in the pre-cut
−
holes in the wings using thin cyano and activator spray (Figs. 15b, 15c).
The 6.4 mm Ø brass tubes (No. 54) (incidence pegs) must project well into the wing through the root
−
facing rib (Fig. 15e). It should go without saying that the tubes must be roughened thoroughly before
gluing.
Tack the brass tubes (No. 54) in place with cyano / activator spray, then cut through them so that they
−
project about 25 - 30 mm from each root rib (Fig. 15d).
All four brass tubes (No. 54) should now be fixed permanently by applying more thick or thin cyano,
−
using activator spray to ensure proper curing (Fig. 15c).
Now glue in place the 6.4 mm Ø brass tubes (No. 54) which extend into the wings using UHU plus
−
endfest 300 or thickened epoxy resin (Fig. 15e).
The wings retainer screws; fitted either through the wing to the fuselage
Fit the M6 x 30 socket-head cap screw (No. 13) in the appropriate hole in the root facing rib, and secure it
−
with an M6 self-locking nut (No. 56a) as shown in (Fig. 16b). The self-locking nuts (No. 56a) are designed
to prevent the socket-head cap screw (No. 13) falling out. On the fuselage side secure the M6 captive nut
(No. 11) in the appropriate hole, working from the rear through the turbine access hatch. The socket-head
cap screw (No. 13) can be driven through the pre-cut slot in the wing using a ball-end 5 mm allen key.
You may find that the slot through which the ball-end allen key is fitted is not marked or cut by the
−
manufacturer; in this case you have to cut it yourself as shown in (Fig. 16d).
Or through the fuselage / turbine access hatch
−
Fit the M6 x 30 socket-head cap screw (No. 13) through the hole working from the turbine access hatch,
−
and fit the M6 self-locking nut (No. 56a) on it from the fuselage facing rib side. The self-locking nuts (No.
56a) are designed to prevent the socket-head cap screw (No. 13) falling out (Fig. 16). Fix the captive nut
(No. 11) in the appropriate hole in the wing root rib.
Fit the fins (No. 6) on the mounting spigots (No. 54) in the wing (6.4 mm Ø brass tubes) - Caution: the
−
hinge side of the rudders must face out - towards the wingtips. The fin mountings should also be
completed at this point.
The wings and fins can now be temporarily screwed to the fuselage though the turbine access hatch or
−
through the slot in the underside of the wing if you have enlarged the hole for the retaining screw in the
fins, as described in the construction of the fins.
You may find that the wing joiner tube (No. 5) is too long and has to be shortened - but don't rush
−
into this! Measure or calculate the correct length: sum of fuselage width, 2 x fin thickness, 2 x depth
to end of wing joiner sleeve. Check your sums a second time before reaching for the hacksaw!
If the wing joiner tube is left too short the results can be fatal, as the forces cannot be transferred
−
from wing to fuselage if the joiner tube is not long enough. The wing joiner tube and also the optional
CFRP rod, Order No. 6264.200 must project beyond the support rib inside the wing, i.e. right to the
end-stop provided by the manufacturer. Measure this carefully, and make certain that the length of
the wing joiner tube or rod is correct (aluminium or CFRP part as described above).
Fins (No. 6)
The hole to take the M6 wing screw (No. 12) in the fin must be enlarged to suit the diameter of the M6 self-
−
locking nut (No. 56a); the recommended diameter is 12 mm.
Shorten and trim the rudder horns (No. 16) as shown and sand the gluing surfaces thoroughly.
−
Glue the rudder horns (No. 16) in the slots using UHU plus endfest 300. Ensure that the horns (No. 16) are
−
installed in exactly the same position in each rudder (Fig. 17).
Fix the linkage balls (No. 60) to the outermost hole in the rudder horns using M2 self-locking nuts (No. 61).
−
Make up the rudder pushrods (Fig. 13). It is a good idea to assemble the model first, set the rudder servos to
−
neutral using the servo tester, and measure the correct length of the pushrod between the ball-link and the
hole in the servo output arm. Assemble the pushrods from parts (No. 52, 53, 56, 57, 59) as described under
"General information on control linkages".
Note that a hole must be cut in each fin (No. 6) large enough to allow the aileron servo connector to pass
−
through; a matching hole must also be cut in the fuselage root facing rib.
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler! Ident-Nr. 0057999
04/2003
66
66
Made in Thailand
Advertisement
