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Center of Gravity
Warning, do not skip this step!
1) The recommended CG is
wing leading edge at the wing tip as shown.
2. Balance the YAK-54 without fuel in the tank
with the batteries installed and READY TO
FLY. The engine, radio, servos, and batteries
you use will determine the final weight and loca-
tions of equipment. Try to balance the model by
moving the batteries and receiver before adding
any ballast.
.
3 1/2"
back from the
3. Start at recommended CG until you are comfort-
able with the flight characteristics of the aircraft.
You may find this a bit nose heavy at first but
that is fine to start with. After you are comfort-
able adjust the CG to suit your flying style in
small steps, especially when shifting the CG to-
ward the tail. Move the battery or add small
stick on weights to the nose or tail as necessary.
Note: If additional nose weight is necessary we rec-
ommend moving the engine forward slightly by add-
ing extra spacer or washers to move the C.G.
forward. Try this before adding an additional weight.
4. For aerobatic flying a more aft balance point is
better. For smooth sport flying or precision pat-
tern a more forward CG is better. An aircraft
that is too nose heavy does not fly well and is
difficult to land. A tail heavy aircraft is uncon-
trollable and will likely crash.
Control Throws
1. The amount of control throw should be adjusted
using mechanical means as much as possible and
then electronically with the radio. The control
throws are shown in degrees and inches of de-
flection measured at the widest point of the con-
trol surface for both low and high rates.
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