Dynaflite GPMA0510 Super Decathlon - Manual (Page 33)

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BALANCE THE MODEL
LATERALLY
Do not confuse this procedure with “checking
the C.G.” which will be discussed later in the
manual.
Now that the model is covered and nearly
completed, this is the time to balance it laterally
(side-to-side). Here’s how:
❏ 1. With the wing level and attached to the model
(and the engine and muffler installed), lift the
model by the propeller shaft and the fin. This may
require an assistant. Do this several times.
❏ 2. The wing that consistently drops indicates the
heavy side. Balance the model by adding weight to
the other wing tip.
An airplane that is laterally balanced will track
better during aerobatic maneuvers.
BALANCE YOUR MODEL
This section is important and must not be omitted.
A model that is not properly balanced will be
unstable and possibly unflyable. Note: You must
check the balance point with all components
installed in the model and the fuel tank empty.
❏ 1. Attach the wing and struts to the fuselage.
Then, accurately mark the balance point on the
bottom of both wing halves next to the fuselage.
Check and set the CG as shown on the plan at
3-3/8" aft of the leading edge. After your first flights,
the CG can be adjusted fore or aft up to 1/2" from
the optimum CG to fit your flying style.
PREFLIGHT
BALANCE YOUR PROPELLERS
Many problems are the result of vibration caused
by an unbalanced propeller. Nuts and bolts can
vibrate loose. Vibration can damage delicate radio
components and even damage the delicate glow
plug element, resulting in an engine that is difficult
or impossible to start. Purchase a Top Flite Precision
Magnetic Balancer
™ or a Great Planes Fingertip
Prop Balancer to accurately balance your
propellers.
CHARGE YOUR BATTERIES
Follow the battery charging instructions in the
instruction manual that came with your radio
control system. You should always charge your
batteries the night before you fly.
AT THE FLYING SITE
GROUND CHECK
YOUR MODEL
Inspect all nuts, screws and wheel collars. Make
sure that you installed the screws that hold the
servo arms onto the servos and that the servo
wires are securely connected to the receiver. If you
are not thoroughly familiar with R/C models, ask an
experienced modeler to inspect your radio
installation and make sure the control surfaces
respond correctly. The engine must be “broken-in”
according to the engine manufacturer's
recommendations for break-in. Refer to the Safety
Precautions on this page before you start your
engine. After you run the engine on the model,
make sure all screws remain tight, the hinges are
secure and the prop is on tight.
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