Great Planes Edge 540 FlatOuts 3D EP ARF - GPMA1113 - Manual (Page 19)

To set the throws, use the Angle Templates on the back cover
page of this manual to verify that you are in the ballpark.
If you are not able to achieve these control throws, double-
check your pushrod hookup and make sure any control
surfaces in question are operating smoothly. If you have a
computer radio, also make sure your endpoint adjustments
are properly set.
At this stage the model should be in ready-to-fly condition
with all of the systems in place including the motor, the
propeller, the battery, and the radio system.
❏
1. Use a felt-tip pen or 1/8" [3mm]-wide tape to accurately
mark the C.G. on the top of the wing on both sides of the
fuselage. The C.G. is located 2-1/2" [64mm] back from the
leading edge of the wing at the fuselage.
❏
2. With all parts of the model installed, including the
battery (ready to fly), lift it upside-down on your fingertips at
the balance point you marked.
❏
3. If the tail drops, the model is “tail heavy” and the battery
pack and/or receiver must be shifted forward or weight must
be added to the nose to balance. If the nose drops, the model
is “nose heavy” and the battery pack and/or receiver must be
shifted aft or weight must be added to the tail to balance. If
possible, relocate the battery pack on the hook-and-loop strip
This is where your model should balance for the first
flights. Later, you may wish to experiment by shifting the
C.G. up to 1/2" [13mm] forward or 1/2" [13mm] back to
change the flying characteristics. Moving the C.G. forward
may improve the smoothness and stability, but the model
may then require more speed for takeoff and make it more
difficult to slow for landing or 3D aerobatics. Moving the
C.G. aft makes the model more maneuverable, but could
also cause it to become too difficult to control. In any case,
start at the recommended balance point. As with the
throws, though, we encourage you to experiment with the
CG until the model flies to your taste.
More than any other factor, the C.G. (balance point) can
have the greatest effect on how a model flies, and may
determine whether or not your first flight will be successful.
If you value this model and wish to enjoy it for many flights,
DO NOT OVERLOOK THIS IMPORTANT PROCEDURE.
A model that is not properly balanced will be unstable and
possibly unflyable.
Balance the Model (C.G.)
19