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Center of gravity, Control throws – E-flite Extra 300 32e ARF User Manual

Page 30

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E-flite Extra 300 32e ARF Assembly Manual

6. Lightly sand the inside edge of the canopy at this

time as well. Use care not to over-sand the edge

and get into the clear area of the canopy.

7. Use canopy glue to glue the canopy to the

canopy hatch. Use low-tack tape to keep the

canopy in position until the glue has fully cured.

8. Remove the lines made by the felt-tipped

pen from the fuselage using paper towels and

rubbing alcohol.

Center of Gravity

An important part of preparing the aircraft for flight is

properly balancing the model.

Caution: Do not inadvertently skip this step!

The recommended Center of Gravity (CG) location for
your model is 3

1

/

2

to 3

7

/

8

inches (90 to 98mm) back

from the leading edge of the wing as shown with the

battery pack installed. Mark the location of the CG on

the top of the wing with a felt-tipped pen.

When balancing your model, support the plane

inverted at the marks made on the wing with your

fingers or a commercially available balancing stand.

This is the correct balance point for your model.

Adjust the motor battery as necessary so the model is

level or slightly nose down. This is the correct balance

point for your model. You should find the CG to be

very close with the battery installed forward in the

battery area inside the cowling.

We suggest a Center of Gravity of 3

1

/

2

for precision

flight and 3

7

/

8

for 3D flight. Some have found the CG

range to be a bit broader and is a personal taste and

feel. You may explore the range and find the location

that works best for you.

After the first flights, the CG position can be adjusted

for your personal preference.

Control Throws

1. Turn on the transmitter and receiver of your

Extra 300 32e. Check the movement of the rudder

using the transmitter. When the stick is moved right,

the rudder should also move right. Reverse the

direction of the servo at the transmitter if necessary.

2. Check the movement of the elevator with the

radio system. Moving the elevator stick toward the

bottom of the transmitter will make the airplane

elevator move up.

3. Check the movement of the ailerons with the

radio system. Moving the aileron stick right will

make the right aileron move up and the left aileron

move down.

4. Use a ruler to adjust the throw of the elevator,

ailerons and rudder. Adjust the position of

the pushrod at the control horn to achieve the

following measurements when moving the sticks to

their endpoints.