Composite-ARF kangaroo, Инструкция по эксплуатации

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When you have completed the canopy latch system, and your canopy fits snugly on the fuselage without any
ugly gaps, check that the hole you originally drilled at the rear end of the canopy still lines up correctly with the
hole in the plate (16) which is glued in the fuselage. Adjust the hole in the plate if necessary, then drill it out to
7.3 mm Ø and glue the M6 captive nut (26) in place; we recommend 5-minute epoxy for this.
The next step is to assemble the plywood servo mounts for the four wing-mounted servos and the two rudder
servos. The plywood parts (27) comprise machine-cut components to make a total of six servo mounts.
Assemble the servo mounts and glue the joints with thick cyano. Fix the servos in the mounts, and glue the
mounts in place using cyano (see Fig. 10). Check that each servo is positioned correctly on the base plates /
hatch covers.
Before gluing the servo mounts permanently, be sure to check that the servos are aligned correctly, i.e. that the
pushrods will exit the wings and run straight to the control surface horns. In our case the pushrod slots are in the
top surface of the wing. Check in the same way that the rudder linkages are exactly correct (Figs. 10/11).
Fit extension cables to the servo leads as required, then fix the prepared servo mounts (complete with servos with
output arms fitted) in the appropriate wells in the wings and fuselage using the self-tapping screws (28).
If you use standard servo extension leads, i.e. with plugs and sockets, then secure each connection individually
with heat-shrink sleeving or tape!
The Phenolic (Novotex) horns (17) can now be glued in the pre-cut slots in the ailerons using UHU plus endfest
300 or epoxy laminating resin. Use the template supplied in the kit to set all the horns at the correct angle. Note
that the horns must rest against the front edge of their slots, i.e. as far forward as possible relative to the hinge
line gap.
General tip: before you make up any of the control surface linkages, check carefully that the servos are at neutral
/ centre, and that the servo output arms are correctly positioned. The output arm retaining screws must be
properly fitted and adequately tightened. If the pushrods are straight, and perfectly aligned with the servos and
the control surfaces, you will find it straightforward to program the radio control system satisfactorily.
At this point the pushrods for the four elevons can be made up and installed. Cut suitable lengths of the M3
studding (21), and complete them with the M3 clevises (22) locked in place with M3 nuts (23). Ensure that each
elevon is accurately at neutral and in line with its paired elevon when the servos are at centre. The M3 nuts are
used as locknuts to secure the clevises; alternatively you may prefer to solder the clevises to the rods (Fig. 11).
Fit the two 6.4 mm Ø brass tubes (29) and the wing joiner tube (5) through the pre-cut holes in the fuselage, slip
the fins and the wing panels onto the tubes as shown in Fig. 12, and glue the brass tubes (29) in the holes
in the
wings only using 30 Minute Epoxy. This technique ensures that the wing incidence pegs (brass tubes) line up
correctly with each other. When the epoxy has cured, cut off the brass tubes, leaving them projecting from the
root ribs by about 25 - 30 mm.
- You may find that some slight adjustment of the hole diameter in the fins is necessary; at the factory we aim at
a close fit, but manufacturing tolerances combined with material shrinkage may cause the fits to become slightly
too close.
Locate the marked point on the fins (3) and push a round file through the moulding at that point to clear the wing
retainer screw (30) (M6 x 30 socket-head cap screw). The hole should be just slightly larger than the screw
diameter.
The next step is to fix the captive nut (26) in the fuselage, but first check that the factory-cut holes in the wing
panels and fuselage line up correctly, and also line up with the hole in the fins which you have just made. Carry
out any minor trimming required.
The M6 x 30 socket-head cap screws (30) would fall out of the root ribs if not secured, so cut pieces of silicone
hose (31) about 8 mm long and push them onto the screws (Fig. 13). Install the captive nuts (26) in the fuselage
and secure them with 5-minute epoxy. When the epoxy has cured you can screw the wings and fins to the
fuselage using a ball-end allen key applied through the slot which is factory-machined in the underside of the
wing.