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Composite-ARF YAK 55SP (3m span)
Landing Gear support bulkhead
After you have completed the fuel tank base, and glued it
into position you must glue in the plywood upper landing
gear support bulkhead - which transfers some of the land-
ing loads throughout the fuselage.
This milled part is supplied in the wood pack, and it is not
installed in the factory to give you better access when
installing the motor and R/C gear, batteries etc.
Sand the inside of the fuselage and the top of the LG plat-
form carefully and glue this bulkhead in vertically with slow
epoxy and microballoons mixture. Do not forget to glue this
bulkhead in before flying your Yak !
R/C & Equipment Installation
Everyone has their own favourite methods,
equipment and layouts when fitting the R/C
and gear, and the installation shown here is
just a guide.
We highly recommend a high-quality servo
powerbus system and dual Rx batteries for
the ultimate in safety and security, for example
the Powerbox 40/24 shown. It's your choice,
but the dual Nicad and powerbus installation
does give extra 'peace of mind' and protects
your investment, and therefore this is what C-
ARF recommend and have shown here.
The PowerBox power control unit is designed
especially for large models and provides dual
battery inputs with hi-amp connectors, multi-
ple outputs for 7channels/24 outputs (no 'Y'
leads needed), automatic voltage regulation
and stability, built-in servo amplifiers for those
long servo cables, as well as dual visual LED
battery displays. It comes complete with hi-
current connectors and is fitted with anti-sup-
pression chokes on all channels. The full
'PowerBox' range is available from C-ARF as
an option. Please visit our website for more
details.
Ignition Batteries
We always use 2400 (sub-C sized cells) for
techsupport@composite-arf.com
(above) Glue the landing gear
upper support bulkhead in posi-
tion with epoxy & micro-balloons
after finally fixing the tank base into
position.
(above) A general view of the R/C installation,
showing fuel tank base, Rx, Powerbox, and dual
RX batteries. Ignition battery is located inside
the motordome.
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