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Composite-ARF Yak-55 SP (2.6m span)
R/C & Gear Installation
Everyone has their own favourite methods
when fitting the R/C and gear, so the installa-
tion shown here is a guide, and has worked
perfectly in all of our planes flown by C-ARF
factory staff, and many of our customers.
You can either install a simple R/C system
with a single receiver NiCad and switch, or fit
twin NiCads and switches with a single receiv-
er and a high-quality servo powerbus system
for the ultimate in safety and security.
Particularly if you decide to build the plane
with 8 high power digital servos the 2nd option
is highly preferable, if only because of the high
current draw during 3D style manoeuvres.
It's your choice, but the dual Nicad and power-
bus installation does give extra 'peace of
mind', increases the safety factor and protects
your investment, and therefore this is what C-
ARF recommend. The full 'PowerBox' range is
all available from C-ARF as an option. Visit
our website for more details.
Fuel proofing: Before doing the final R/C
installation, we recommend that you protect
all the bare wood parts and edges inside the
front of the plane with one thin coat of 24 hr
laminating epoxy, or similar, brushed on. Be
careful not to add excess weight here - it only
needs about 30 - 40 grams (1 1/2 oz) of epoxy
to fuel proof all the wood in the whole area in
the front of the plane.
Simple installation
For a simple installation the receiver can be
fitted to the milled plywood bulkhead behind
and below the rudder servos, which keeps it
(and the antenna) as far away from the high
current motor ignition system as possible.
Protect it from vibration with a thick foam pad.
Run the antenna wire along the side of the
fuselage and then vertically through the top of
the fuselage just behind the cockpit and back
towards the vertical stab. Keep it as far as
possible from the cables for the elevator ser-
vos and the closed-loop rudder wires.
The single Rx NiCad should be a 5-cell pack
of at least 2400 mAH and will need to be fitted
techsupport@composite-arf.com
Finished in 4 - 6 hours
(above) This general view shows the Dubro tank
(part number #690) in position on the fuel tank
base, held in place with 3 cable-ties.
(below) General view showing PowerBox
Competition and Rx installed on the plywood
plate provided. With a DA-100 the 2 Rx batteries
need to be fitted to the fuselage floor just in
front of the spar as shown here.
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