Wings:
The wings are laminated from a lightweight fibreglass and foam sandwich, cured under vacuum,
and are painted in the molds in a single colour. The elevons and servo hatches are elastic-hinged
and already cut out and trimmed for your convenience, at the factory.
The wings are held onto the fuselage with M4 x 20mm bolts (with washers), into T-nuts that are
installed in the wing root ribs during manufacture. You will need to use a short ball-ended allen
(hex) wrench to access these bolts, and they screw thru’ the composite root rib in the fuselage.
Note:
These bolts are also on the CG location !
Wing Joiners
The wings are joined using the two long Ø 7mm
fibreglass rods, slid thru’ the holes in the centre
and back of the wing roots, and these should
not
be glued in place.
The middle wing joiner is the longest (300mm
length), and this should project out of both fuse-
lage roots a minimum of 65mm each side. The
rear joiner (240mm) should project at least 35mm
both sides. These joiners fit into fibreglass tubes
that are installed in the wings during manufacture.
The middle wing joiner also holds the battery tray
into the fuselage, passing thru’ the fibreglass tube
that is glued onto the tray. At the front of each
wing root there is a shorter fibreglass tube that
acts as an anti-rotation dowel, and at least 25mm
of these must be glued into each wing root (with
30 minute epoxy & micro-balloons), with just
enough length projecting to hold the side-plates
of the front of the battery tray in position. There-
fore, these cannot be glued into the wing until you
have built the battery tray to suit your Lipo.
Elevon Servos
The elevon servos are installed in the pre-cut,
elastic-hinged, hatches in the underside of the
wing, using the milled plywood mounts which are
sized to suit the JR DS-161 or Hitec HS-5125
‘thin’ digital wing servos. Adjust the plywood
mounts if necessary to fit your chosen servos ex-
actly, and screw them into place.
Set up an ‘Elevon’ mix in your transmitter, centre
the servos, fit the servo arms at 90° to the servo
case, and screw the servos onto the mounts.
Sand the top surface of the mounts, the inside of
the upper wing skins and back of the wing spars
in the servo pockets carefully for a good glue
bond. Do
not
glue them in place yet.
Fox Composites Co., Ltd.
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