Xenon
Xenon building instructions
3
Wing
The wing consists of three panels: the centre section, which is screwed to the fuselage, and the
two outboard panels, which plug into the centre section. All the wing panels are of traditional built-
up construction and are supplied assembled and film-covered. The ailerons and camber-changing
flaps are already hinged, and the facing ribs at the dihedral breaks are correctly angled.
The centre section is fixed to the fuselage by means of a central screw. Melt the covering film over
the screw-hole using the tip of a hot soldering iron; the heat in the tip will immediately glue the
surrounding film down again. A locating peg has to be glued in the leading edge of the wing; mark
the position of the hole in the fuselage on the leading edge before drilling the hole for the peg.
Open up the servo wells using a small soldering iron.
The aileron and flap servos are installed using the servo mounts supplied. To determine their
exact position, push the mounts onto the servo, and place
this assembly in the servo well “dry” (no
glue). Mark the exact position where the mounts are to be installed.
Glue the servo mounts in the wing using thick cyano or 5-minute epoxy. Allow the glue to set hard.
Check that the servo output arms are exactly at right-angles to the hinge pivot axis, then fix the
servos in the mounts using hot-melt adhesive.
Cut off the connector end of the servo leads. For each servo draw a twisted extension cable (not
included in the kit) through the wing panels. You will need to fit three-pin plugs and sockets at the
transition point between the centre section and the outboard wing panels.
Solder the twisted extension cables to the servo leads, and fit a heat-shrink sleeve over each
soldered joint for additional protection. An alternative is to install extension leads terminating in
sockets, and connect the servo plugs to them. In this case you do not need to cut off the servo
leads, but the connectors must be secured with adhesive tape to avoid any danger of them
working loose.
A six-pin plug and socket connection is required at the transition from the wing centre section to
the fuselage. Note that all the positive servo wires can be soldered to a common pin, as can the
negative wires.
Connect the radio control system, and check the operation of the installed servos from the trans-
mitter. At this point you can also check the servo neutral positions, and set the correct directions of
rotation.
Glue the horns in the flaps and ailerons prior to installing the linkages; the horns must line up
accurately with the servo output arms.
The short horns are intended for the ailerons; the linkage hole should be located exactly over the
aileron hinge pivot axis.
Glue the longer horns in the flaps, as described for the ailerons.
The linkages themselves are each assembled from a pre-formed wire pushrod, a threaded coupler
and a plastic clevis. Take care to produce sound soldered joints between the threaded couplers
and the rods. Epoxy can be used as an alternative.
Carefully cut out the servo well covers and fix them to the wings using clear adhesive tape, after
checking that the servo output arms do not foul the inside of the well covers when they deflect.
Join the wing panels using the CFRP / GRP joiner rods. Note that the joiners incorporate the cor-
rect dihedral.
Glue the incidence pegs in the outboard panels to prevent them rotating on the joiner rods. Leave
about 10 mm projecting, and sand the exposed ends to a rounded profile.
The outboard panels are held in place by strips of adhesive tape applied to the top surface of the
wing along the separation line.
Tailplane
The tailplane is screwed to the tail end of the fuselage, and can be removed for ease of transport.
Use a soldering iron to remove the covering film over the central hole in the tailplane, then glue
the metal captive nut in the hole from above (!) using 5-minute epoxy. It is a good idea to remove
a little more film all round the hole, to achieve as strong a glued joint as possible.
The top surface of the tailplane is that to which the elevator is attached using an adhesive tape
hinge.
