the upper end of the thrust range, and all the batteries will normally be fitted in the nose. Using a
5 or 6-cell ECU/pump battery (sub C NiCad cells) and two 5 cell 800 mA (AA sized) NiMH receiver
packs no additional weight was needed in the nose of the factory PST 600 powered Sabre. De-
pending on the recommendations of your R/C manufacturer, be sure to use a voltage regulator to
limit the max. current to your receiver ! One simple way to achieve this is to use the excellent
(small & lightweight) Powerbox 'Sensor' switch which combines dual electronic 'fail-ON' switches
for dual Rx batteries, with dual inputs and outputs, and an integral 5.9v voltage regulator.
Building Instructions
There is no special sequence necessary for construction of the Sabre, and you can work on sev-
eral areas at the same time if you wish, making it a very quick plane to build. However it is easi-
est to follow the sequence shown below for the the fuselage assembly, for ease of access.
It is wise to complete the rudder and elevator servos, and finish the wing servos and main
gear/wheels before commencing on the fuselage R/C and motor installation so that you can gauge
any CG problems you might have later, which might only occur if using a turbine at the higher end
of the recommended thrust range, or a very heavy exhaust duct/thrust tube. If using the recom-
mended landing gear and servos and a smaller motor (eg: Wren MW44) you should have no prob-
lems in obtaining the correct CG without adding any additional weight in the nose at all.
Horizontal Stabiliser and Elevators:
The stabiliser is laminated from a lightweight fibreglass and foam sandwich (about 2mm thick),
cured under vacuum, and painted in the molds in a single colour. The one-piece stab has been fac-
tory-fitted onto your fuselage, and aligned with the wing in a jig, thereby also setting the correct
incidence. The upper fairing and stab fixings have also been completed, and glued into position
in the jig. The front of the stab is secured with a plywood tab into bulkhead in the fuselage, and
the back is held in position with an M4 x 25mm bolt, and washer, that is inserted from underneath
and passes through the stab into a factory-installed M4 T-nut inside the upper stab fairing.
The elevators are elastic-
hinged in the mould. All you
need to do is install servos, el-
evator control horns & linkages.
The hatches for the servos are
pre-cut for you, and elastic
hinged at the front. The stab is
only about 12mm thick at the
outer edge of the servo pock-
ets, so you will need to use
very slim servos such as the
recommended JR DS 161's
shown here (10.5mm thick).
You will need to use 2 receiver
channels to control the eleva-
tors (if fitted as shown), unless
Fox Composites Co., Ltd.
5
Completed stabiliser, hatches taped closed, and servo link-
ages, viewed from below. Also shows stab fixing bolt.
