Check the c.g. (center of gravity) – Flyzone FLZA4004 User Manual

Page 12

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3. Fit both wing strut tubes into the hard, plastic strut

fairings in the wing and fuselage—the ends of the strut
tubes with the sharper bend goes upward, into the wings.

4. Push fi rmly on the ends of the struts that go into the

fuselage to be certain they fully “click” all the way into the
fairings. Secure the struts with a 2.5 x 8mm Phillips screw
in each end.

5. When it’s time to fl y the model, the antennas may be

installed in the wings simply by pushing them down into
position. The antennas do not require adhesive and can be
removed if ever the model needs to be placed upside-down
on its wings (for strut removal, etc.). If, however, you prefer to
permanently glue the antennas into place, white glue (such
as Elmers) or super glue (CA) may be used.

Check the C.G. (Center of Gravity)

The C.G. (Center of Gravity) is the location on the wings,
measured back from the leading edge on both sides of
the fuselage, where the model balances. In addition to the
control surface throws, the C.G. has a GREAT effect on the
way the model fl ies. If the C.G. is too far aft (tail heavy), the
model will be too responsive and diffi cult to control. If the
C.G. is too far forward (nose-heavy), the model will be too
stable and not responsive enough. Follow the instructions
to make sure the model is balanced properly and the C.G.
is in the correct location.

1. Install the motor battery (do not connect the wires) and

battery hatch. All the rest of the parts of the model should
already be in place including the propeller and spinner
and the wing struts (it is not necessary to have the clip-on
antennas in place as they will have no measurable effect on
the C.G.).

2. You have already marked the balance points on the

bottom of the wings as shown on page 9. Now place your
fi ngers on the middle balance marks and lift the model. The
fuselage should remain level—it may be helpful to have
an assistant view the model from the side (or have your
assistant lift the model) to see if it is level. If the tail drops,
nose weight will be required. If the nose drops the tail weight
will be required. The best way to fi nd out how much weight is
required to balance the model is to place segments of stick-
on lead weight on the fuselage wherever it may be needed.
For this, Great Planes stick-on lead weight (GPMQ4485) (or
similar) should be used.

3. Determine the amount of weight required by placing

segments over the cowl or tail where shown, but do not
attach the lead yet.

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