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Check the control directions, Set the control throws, Balance the model (c.g.) – Great Planes Revolver GP/EP ARF 59" - GPMA1018 User Manual

Page 26

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Check the Control Directions

1. Turn on the transmitter and receiver and center the

trims. If necessary, remove the servo arms from the servos
and reposition them so they are centered. Reinstall the
screws that hold on the servo arms.

2. With the transmitter and receiver still on, check all the

control surfaces to see if they are centered. If necessary, adjust
the clevises on the pushrods to center the control surfaces.

FULL THROTTLE

RUDDER MOVES RIGHT

ELEVATOR MOVES UP

RIGHT AILERON MOVES UP

LEFT AILERON MOVES DOWN

4-CHANNEL RADIO SETUP

(STANDARD MODE 2)

3. Make certain that the control surfaces and the carburetor

respond in the correct direction as shown in the diagram.
If any of the controls respond in the wrong direction, use
the servo reversing in the transmitter to reverse the servos
connected to those controls. Be certain the control surfaces
have remained centered. Adjust if necessary.

Set the Control Throws

Use a Great Planes AccuThrow (or a ruler) to accurately measure
and set the control throw of each control surface as indicated in
the chart that follows. If your radio does not have dual rates, we
recommend setting the throws at the low rate setting.

These are the recommended control surface throws:

High Rate

Low Rate

ELEVATOR: 1/2" [13mm] up

5/16" [8mm] up

1/2" [13mm] down

5/16" [8mm] down

RUDDER:

2-1/4" [57mm] right

1-3/8" [35mm] right

2-1/4" [57mm] left

1-3/8" [35mm] left

AILERONS: 3/8" [10mm] up

1/4" [6mm] up

3/8" [10mm] down

1/4" [6mm] down

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

IMPORTANT: The Revolver ARF has been extensively
fl own and tested to arrive at the throws at which it fl ies best.
Flying your model at these throws will provide you with the
greatest chance for successful fi rst fl ights. If, after you have
become accustomed to the way the Revolver 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
diffi cult to control, so remember, “more is not always better.”

Balance the Model (C.G.)

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

At this stage the model should be in ready-to-fl y condition
with all of the systems in place including the engine or
brushless motor, landing gear, and the radio system (and
battery pack if applicable).

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 4-15/16" [110mm] back from
the leading edge of the wing at the fuselage.

This is where your model should balance for the fi rst
fl ights. Later, you may wish to experiment by shifting
the C.G. up to 5/16" [8mm] forward or 5/16" [8mm] back
to change the fl ying 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 diffi cult to slow for landing. Moving the C.G.
aft makes the model more maneuverable, but could also
cause it to become too diffi cult to control. In any case,
start at the recommended balance point and do not at
any time balance the model outside the specifi ed range.