84
Center of Gravity
Warning, DO NOT skip this step!
1.
The recommended CG is
3.5”
back
from the wing leading edge at the
wing tip as shown.
CENTER OF GRAVITY - CONTROL THROWS
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. 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
recommend moving the engine forward slightly
by adding extra spacer or washers to move the
C.G. forward. Try this before adding an addi-
tional 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 deflection.
Aileron throw measured in inches at the widest
point of the aileron.