Sand or file the 6 x 30mm long
slot in the top of the raised part
of the fuselage for access to
the clevise connection now.
This slot will be hidden by the
rudder at neutral when it is in-
stalled later.
Remove the bearings and rods
from the yoke. Fit the bearings
into the fuselage pockets - it is
not important which way
around they are fitted, and they
do
not
need to be glued in
place. Trial fit the yoke inside
the fuselage, and adjust the
length of the rear (longer) tube,
if necessary, so that it
just
fits
between the fuselage sides,
and it is centred on the slot in
the top of the fuselage.
Slide the rear (sanded) Ø 7mm
rod thru’ the bearings and back
tube of the yoke, and also the
front rod thru’ the curved slots
in the fuselage sides, and the
front tube of the yoke. Slide the
stabs onto the 2 rods, with the
chamfered surface of the roots
towards the underside. Now
check the travel available, with
the curved slots that are al-
ready milled in the fuselage for
you - and lengthen these if nec-
essary to obtain at least 10mm
‘up’ and 10mm ‘down’ move-
ment at the trailing-edge with-
out any binding.
Note that the elevator ‘neutral’ (level flight) position is with the top of the stab trailing edge flush
with the top of the fuselage moulding, and that is the position you must set for the first flight.
Mass-balancing
It is your choice whether to add a little lead into the leading edges of the stabs to achieve either
partial, or full, mass-balancing. We, and many customers, have flown hundreds of flights both with
- and without - balancing, and none of us has ever experienced any flutter.
Nevertheless, we recommend at least partial balancing, especially if you will fit a turbine at the
upper end of the thrust range. If you wish to balance, even just to reduce the loads on the stab
servo, then drill a 6mm hole in the root leading edge of both stabs and glue approx. 20 grams (3/4
oz.) of lead strip/fishing weight into each.
Fox Composites Co., Ltd.
16
(above) Bearings fit into moulded pockets in the fuselage.
Adjust curved front slots for 10mm up & 10mm down throws.
Cut a 6 x 30mm slot in the raised part for clevise access.
(below) Stabs must be spaced 1 - 1.5mm off fuselage while
glue cures, for clearance. Completed linkage also seen.
25mm 30mm
