Control Throws and Center of Gravity
49
Recommended CG Location
An important part of preparing the aircraft for flight
is properly balancing the model. This is especially
important when various engines are mounted.
Caution: Do not inadvertently skip this step!
The recommended Center of Gravity (CG) location for
the Corsair is 5" behind the leading edge of the wing
against the fuselage. Make sure the gear is retracted
when checking the CG, as the CG will change
depending on the gear position. If necessary, move
the battery pack or add weight to either the nose or
the tail until the correct balance is achieved. Stick-on
weights are available at your local hobby shop and
work well for this purpose.
The amount of control throw should be adjusted as
closely as possible using mechanical means, rather
than making large changes electronically at the radio.
By moving the position of the clevis at the control
horn toward the outermost hole, you will decrease
the amount of control throw of the control surface.
Moving it toward the control surface will increase
the amount of throw. Moving the pushrod wire at the
servo arm will have the opposite effect: Moving it
closer to center will decrease throw, and away from
center will increase throw. Work with a combination
of the two to achieve the closest or exact control
throws listed.
Recommended Control Throws
Low Rate
High Rate
Aileron 1/2" (11°) up
9/16" (16°) up
1/2" (11°) down
11/16" (15°) down
Elevator 9/16" (11°) up
7/8" (17°) up
9/16" (11°) down
13/16" (16°) down
Rudder 1
1
/
2
" (20°) left
2" (27°) left
1
1
/
2
" (20°) right
2" (27°) right
Note
: Control throws are measured at the
widest part of the elevator, rudder, and aileron
unless otherwise noted .
Preflight at the Field
Charge both the transmitter and receiver pack for
your airplane. Use the recommended charger
supplied with your particular radio system, following
the instructions provided with the radio. In most
cases the radio should be charged the night before
going out flying.
Check the radio installation and make sure all the
control surfaces are moving correctly (i.e. the correct
direction and with the recommended throws). Test run
the engine and make sure it transitions smoothly
from idle to full throttle and back. Also ensure the
engine is tuned according to the manufacturers
instructions, and it will run consistently and
constantly at full throttle when adjusted.
Check all the control horns, servo horns and clevises
to make sure they are secure and in good condition.
Replace any items that would be considered
questionable. Failure of any of these components in
flight would mean the loss of your aircraft.
Range Testing the Radio
Before each flying session, range-check your radio.
This is accomplished by turning on your transmitter
with the antenna collapsed. Turn on the radio in your
airplane. With your airplane on the ground, you
should be able to walk 30 paces away from your
airplane and still have complete control of all
functions. If not, don’t attempt to fly! Have your
radio equipment checked out by the manufacturer.
