Dynaflite DYFA3030 - Manual (Page 26)

This section is important and must not be omitted. A
model that is not properly balanced will be unstable
and possibly unflyable.
❏
1. Check the balance point with all components
installed in the model and the fuel tank empty.
Attach the wing to the fuselage, then accurately
mark the balance point on the top of both wing
halves next to the fuselage. The balance point is
shown on the plan and is 3-5/8" (92 mm) aft of the
leading edge.
❏
2. Lift the model with your fingers at the balance
point or use the Great Planes CG Machine ™
(GPMR2400). If the tail drops, shift the receiver
and/or battery forward (if possible) to balance the
model. If the nose drops, shift the receiver and/or
battery pack aft. If possible arrange the battery pack
and receiver to achieve balance but make sure they
remain secure in the fuselage so they cannot shift
during flight or a rough landing. If you must add
additional weight to the nose or tail of the Fly Baby
to achieve balance, use Great Planes adhesive lead
weight (GPMQ4485). An alternative to stick-on nose
weight (if your model is tail heavy) is a Great Planes
brass spinner nut (GPMQ4640). It has 1/4-28
threads so it will fit most engines.
Balance Your Propellers
Balancing the propeller seems like one of those
things that you can skip, but many problems are the
result of vibration caused by an unbalanced
propeller. Nuts and bolts can vibrate loose and
vibration can damage delicate radio components
inside your receiver and servos. Vibration can even
damage the delicate glow plug element which could
result in an engine that is difficult or impossible to
start. Purchase a Top Flite Precision Magnetic
Balancer
™ (TOPQ5700) or a Great Planes Fingertip
Prop Balancer (GPMQ5000) 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.
Ground Check Your Model
Inspect all nuts, screws and wheel collars. Make
sure you install the screw that holds the servo arm
onto the servos
and the servo cords 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 Engine Safety Precautions on the next 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.
Range Check Your Radio
Check the operational range of the radio before the
first flight. Before you turn your radio on, the first
AT THE FLYING SITE
AT HOME
PREFLIGHT BALANCE THE MODEL
26