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9
important note
This model is not made of styrofoam™, and it is not possible to glue the material using white glue, polyurethane or
epoxy; these adhesives only produce a superficial bond which gives way when stressed. Use medium-viscosity
cyano-acrylate glue for all joints, preferably our Zacki-ELAPOR®, # 59 2727 - the cyano glue optimised specifically for
ELAPOR® particle foam. At some points the extremely low-viscosity version - Zacki ELAPOR super liquid, # 59 2728,
is required. If you use Zacki-ELAPOR® you will find that you do not need cyano ‘kicker’ or activator for most joints.
However, if you wish to use a different adhesive, and are therefore obliged to use kicker / activator spray, we
recommend that you apply the material in the open air as it can be injurious to health.
1. Before assembling the model
Please check the contents of your kit.
You will find
Figs. 01 + 02
and the Parts List helpful here.
Assembling the model:
2. Piercing the cable ducts through the fuselage
Use a bradawl, a round file or a screwdriver to pierce the cable
holes through the fuselage: this is accomplished by placing
the model on its back and twisting the tool into the fuselage,
working from the end of the cable duct. Remove all loose foam
particles.
Fig. 03
3. Remaining preparation work
The next step is to prepare the glue-fitting horns
24
for
installation in the control surfaces.
Fig. 04
Fit the pushrod connector
25
in the outermost hole in the horn
and secure it with the washer
26
and nut
27
. Check that the
connectors swivel smoothly, but without slop.
Caution:
secure
the nuts with a tiny drop of paint or cyano to prevent them
working loose, using the point of a pin to apply it.
Fit the socket-head grubscrews
28
in the pushrod connectors.
Apply
Zacki ELAPOR
to the horn recesses, press the horns
into place, and allow the adhesive to harden.
Caution:
drops of glue may be forced out of the joint - wear
protective goggles to be on the safe side!
4. Installing the servos
The model is designed for MULTIPLEX Nano Pro MG digi4
servos. The leads can be extended using servo extension
cables (with integral separation filters), # 8 5035 (filters only
required for 35 MHz). If the receiver is installed forward of the
flight battery you will need 30 cm extension leads, # 8 5031; if
it is aft of the flight pack the extension leads should be 15 cm
long: # 8 5019.
Set the servos to centre from the transmitter, or use a servo
tester. Fit the output arms on the servos at 90° to the case
sides (remove and re-position if necessary). Wrap adhesive
tape round each servo, or shrink a heat-shrink sleeve round
the case.
This measure is intended to prevent adhesive getting inside
the servo when it is glued in place, as it could jam the servo
gearbox.
Apply
Zacki ELAPOR
sparingly to the servo wells -
but only in
the area where the heat-shrink sleeve or adhesive tape round
the servo makes contact.
Place the servos in the wells and press them into place. Run
the cables along the servo ducts and apply adhesive tape over
the slots to prevent them falling out.
Fig. 05
5. Freeing the control surfaces
Cut through the tip end of the elevons using a balsa knife,
leaving a gap about 1 mm wide, as shown in
Fig. 06
. Move the
panels to and fro repeatedly at the pivot axis to free up the
hinges. Take care not to over-stretch the hinge line, and do not
cut off the control surfaces! The working range should be about
+/- 45°.
Fig. 06
6. Installing the wing spar, gluing the outboard wing panels
to the centre section
Slide the tubular CFRP spar
10
through the fuselage from one
side and set it exactly central. Don’t glue it in place at this
stage.
Fig. 08
7. Gluing the outboard wing panels to the centre section
Trim the outboard wing panels if necessary to fit against the
centre section, and glue them in place using ZACKi ELAPOR.
Production tolerances may produce slight differences in
thickness at the joint, but hand-pressure is sufficient to
compress the foam to the correct thickness; make any
adjustment required before you glue the joint. Deploy the servo
cables and run the extension leads into the fuselage. Seal the
cable ducts with clear adhesive tape as already described.
Secure the servo leads inside the fuselage so that they do not
get in the way when you have to change the flight battery.
Fig. 08
8. Gluing the spar
Check carefully that the wing is straight and free of warps. The
CFRP spar
10
should be an easy fit in its slot; it must not be
excessively tight. Apply thick ZACKi Elapor along the length of
the spar. Check that the wing remains straight while the
adhesive is still soft, and straighten it if necessary. Allow the
adhesive to cure for a few minutes before placing any load on
the wing.
9. Elevon pushrods
Connect the pre-formed end of the pushrods
30
to the
innermost hole in the servo output arms. At the elevon end slip
the pushrods through the pushrod connectors
25
and tighten
the socket-head M3 grubscrews
28
using the allen key
29
;
hold the elevons at neutral while you tighten the screws. Trim
the servo fairings
31
and
32
to fit in the left and right wing
panels respectively. They can be glued in place with ZACKi
Elapor if you wish, but it is generally better to use a few short
strips of clear adhesive tape, as you may need access to the
servo for maintenance.
Fig. 07+09
10. Installing the canopy latch clips
Apply ZACKi Elapor to the canopy latch clips
22
, and press
them into position as shown.
Fig. 10
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