AeroWorks Extra 260 User Manual download pdf (Page 89)

Center of Gravity

3” Back from wing L.E. at wing tip

1. Warning, do not skip this step!

The recommended CG is 3” back from the

wing leading edge at the wing tip as shown.

CENTER OF GRAVITY - CONTROL THROWS

2. Balance the 50cc EXTRA 260 ARF-QB without

fuel in the tank with the batteries installed and

ready to fly. The engine, radio, servos, and bat-

tery you use will determine the final weight and

locations of equipment. Try to balance the

model by moving the battery and receiver before

adding any ballast.

3. Start at recommended CG until you are comfort-

able with the flight characteristics of the aircraft.

You may find this a bit nose heavy at first but

that is fine to start with. After you are comfort-

able adjust the CG to suit your flying style in

small steps, especially when shifting the CG to-

ward the tail. Move the battery or add small

stick on weights to the nose or tail as necessary.

4. For aerobatic flying a more aft balance point is

better. For smooth sport flying a more forward

CG is better. An aircraft that is too nose heavy

does not fly well and is difficult to land. A tail

heavy aircraft is uncontrollable and will likely

crash.

Control Throws

1. The amount of control throw should be adjusted

using mechanical means as much as possible and

then electronically with the radio. The control

throws are shown in degrees and inches of de-

flection measured at the widest point of the con-

trol surface for both low and high rates.

2. Use the widest part of the aileron as shown to

measure the aileron throw in inches.

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AeroWorks Extra 260 User Manual Page 89