Set the control throws, Balance the model (c.g.), Balance the model laterally – Flyzone FLZA3312 User Manual

Page 10

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10

Set the Control Throws

To ensure a successful fi rst fl ight, set up your AcroWot MKII
according to the control throws specifi ed in this manual. The
throws have been determined through actual fl ight testing
and accurate record-keeping allowing the model to perform
in the manner in which it was intended. If, after you have
become accustomed to the way the AcroWot MKII fl ies,
you would like to change the throws to suit your taste, that
is fi ne. However, too much control throw could make the
model too responsive and diffi cult to control, so remember,
“more is not always better.”

These are the recommended control surface throws:

ELEV

A

TOR

R

UDDER

AILER

ONS

LOW RATE

11/32"

[ 9mm] 10°

Up & Down

11/32"

[ 9mm] 12°

Up & Down

1-1/16"

[27mm] 17°

Right & Left

HIGH RATE

5/8"

[16mm] 18°

Up & Down

1/2"

[13mm] 18°

Up & Down

1-5/8"

[41mm] 27°

Right & Left

NOTE: The throws are measured at the widest part of the
elevators, rudder and ailerons.

Balance the Model (C.G.)

More than any other factor, the C.G. (center of gravity/
balance point) can have the greatest effect on how a model
fl ies and could determine whether or not your fi rst fl ight will
be successful. If you value your model and wish to enjoy it
for many fl ights, DO NOT OVERLOOK THIS IMPORTANT
PROCEDURE.
A model that is not properly balanced may
be unstable and possibly unfl yable.

At this stage the model should be in ready-to-fl y condition with

all of the components in place including the complete radio
system, battery, propeller, and spinner.

1. If using a Great Planes

®

C.G. Machine,

set the rulers to

2-7/16” [62mm]. If not using a C.G. Machine, use a fi ne-point
felt tip pen to mark lines on the top of wing on both sides of
the fuselage 2-7/16” [62mm] back from the leading edge. Apply
narrow (1/16” [2mm]) strips of tape over the lines so you will
be able to feel them when lifting the model with your fi ngers.

This is where your model should balance for the fi rst
fl ights. Later, you may experiment by shifting the C.G. 3/8”
[10mm] forward or 3/8” [10mm] back to change the fl ying
characteristics. Moving the C.G. forward will improve the
smoothness and stability, but the model will then be less
aerobatic (which may be fi ne for less-experienced pilots).
Moving the C.G. aft makes the model more maneuverable
and aerobatic for experienced pilots. In any case, start at
the recommended balance point
and do not at any time
balance the model outside the specifi ed range.

2. With the wing attached to the fuselage, and all parts of

the model installed (ready-to-fl y) with battery pack, place the
model upside-down on a Great Planes CG Machine, or lift it
upside-down at the balance point you marked.

3. If the tail drops, the model is “tail heavy.” If possible,

move the receiver forward to get the model to balance. If the
nose drops, the model is “nose heavy.” If possible, move the
receiver aft. If additional weight is still required, nose or tail
weight may be easily added by using Great Planes “stick-on”
lead (GPMQ4485). To fi nd out how much weight is required,
place incrementally increasing amounts of weight on the top
of the fuselage over the location where it would be mounted
inside until the model balances. Once you have determined
the amount of weight required, it can be permanently attached
with glue or screws.

4. IMPORTANT: If you found it necessary to add any weight,

recheck the C.G. after the weight has been installed.

Balance the Model Laterally

1. With the wing level, have an assistant help you lift the

model by the motor propeller shaft and the bottom of the fuse
under the TE of the fi n. Do this several times.

2. If one wing always drops when you lift the model, it means

that side is heavy. Balance the airplane by adding weight to the
other wing tip. An airplane that has been laterally balanced
will track better in loops and other maneuvers.

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