Great Planes Giant U-Can-Do 3D - GPMA1271 - Manual (Page 19)

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3. Position decal on the model where desired. Holding the
decal down, use a paper towel to wipe most of the water away.
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4. Use a piece of soft balsa or something similar to
squeegee remaining water from under the decal. Apply the
rest of the decals the same way.
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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.
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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.
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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. Confirm the control surfaces
have remained centered. Adjust if necessary.
Use 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 settings. Note: The throws are measured
at the widest part of the elevators, rudder and ailerons.
At this stage the model should be in ready-to-fly condition
with all of the systems in place including the engine, landing
gear, covering and the radio system.
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1. Use a felt-tip pen or 1/8" [3mm] wide tape to accurately
mark the C.G. on the top of the wing. The C.G. is located
6-1/4" [160mm] back from the leading edge of the wing.
This is where your model should balance for the first
flights. Later you may wish to experiment by shifting the
C.G. up to 1/2" [13mm] forward or 1/2" [13mm] back to
change the flying characteristics. Moving the C.G. forward
may improve the smoothness and stability, but the model
may then require more speed for take off and make it
more difficult to slow for landing. Moving the C.G. aft
makes the model more maneuverable, but could also
cause it to become too difficult to control. In any case,
start at the recommended balance point and do not at
any time balance the model outside the specified range.
More than any other factor, the C.G. (balance point) can
have the greatest effect on how a model flies, and may
determine whether or not your first flight will be
successful. If you value this model and wish to enjoy it for
many flights, DO NOT OVERLOOK THIS IMPORTANT
PROCEDURE. A model that is not properly balanced will
be unstable and possibly unflyable.
Balance the Model (C.G.)
IMPORTANT: The Giant U-CAN-DO 3D ARF has been
extensively flown and tested to arrive at the throws at
which it flies best. Flying your model at these throws will
provide you with the greatest chance for successful first
flights. If, after you have become accustomed to the way the
Giant U-CAN-DO 3D ARF flies, you would like to change
the throws to suit your taste, that is fine. However, too much
control throw could make the model difficult to control, so
remember, “more is not always better.”
These are the recommended control surface throws:
High Rate (3D) Low Rate
ELEVATOR: 5" [130mm] up 1-3/4" [45mm] up
5" [130mm] down 1-3/4" [45mm] down
RUDDER: 6" [150mm] right 4" [100mm] right
6" [150mm] left 4" [100mm] left
AILERONS: 2-3/4" [70mm] up 1-1/4" [32mm] up
2-3/4" [70mm] down 1-1/4" [32mm] down
FLAPS: 4" [100mm] full 2-3/4" [70mm] half
Set the Control Throws
CARBURETOR WIDE OPEN
RUDDER MOVES RIGHT
LEFT AILERON MOVES DOWN
RIGHT AILERON MOVES UP
ELEVATOR MOVES UP
4-CHANNEL TRANSMITTER
(STANDARD MODE 2)
4-CHANNEL RADIO SETUP
TRANSMITTER 4-CHANNEL
TRANSMITTER 4-CHANNEL
TRANSMITTER 4-CHANNEL
Check the Control Directions
GET THE MODEL READY TO FLY
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