E-flite Yak 54F 3D ARF - Manual (Page 27)

27
Center of Gravity / Battery Installation
Required Parts
Airframe Battery
Hook and loop
 1. Glue the 50mm x 85mm fuselage doubler in
position using foam-safe CA. This will be used
for the front battery location.
An important part of preparing the aircraft for
flight is properly balancing the model.
Caution : Do not inadvertently skip this step!
The recommended Center of Gravity (CG) location
for the Yak-54F is 3/8 – 1
3
/
4
" (10 – 45mm)
behind the front wing spar against the fuselage.
The battery can be located either in the front of
the plane or under the wing, depending on the
equipment used when building the plane. A light
motor may require the battery in the nose, while
a heavy motor and heavy battery may require
the battery to be placed under the wing. Use the
doubler you previously installed in the front of
the fuse when mounting the battery in the front of
the airplane. Use the hook and loop material to
secure the battery in place. See the photos on the
following page for the positions for the battery.