Great Planes Evader EDF Sport Jet EP ARF - GPMA1800 - Manual (Page 18)

18
GET THE MODEL READY TO FLY
Set the Control Throws
To ensure a successful fi rst fl ight it is critical that the
Evader is set up according to the control throws specifi ed
in this manual. The throws have been determined through
actual fl ight testing and accurate record-keeping allowing
the model to perform in the manner in which it was
intended. If, after you have become accustomed to the
way the Evader 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 too responsive and diffi cult
to control, so remember, “more is not always better.”
Measure the high rate elevator throw fi rst…
❏
1. Place the model upright in the stand. Turn on the
transmitter and connect the motor battery.
❏
2. Holding a ruler vertically on your workbench against the
trailing edge of the root end of one of the elevators, measure
and compare the up and down throw to the specifi ed throw in
the chart. If necessary, adjust the elevator throw by changing
the ATVs in your transmitter or by moving the pushrods on
the servo arm.
These are the recommended control surface throws:
ELEVATOR
HIGH RATE LOW RATE
1/4"
[6.4mm]
10°
Up
1/4"
[6.4mm]
10°
Down
3/16"
[4.8mm]
7°
Up
3/16"
[4.8mm]
7°
Down
AILERONS
3/8"
[9.5mm]
17°
Up
3/8"
[9.5mm]
17°
Down
1/4"
[6.4mm]
11°
Up
1/4"
[6.4mm]
11°
Down
NOTE: The throws are measured at the widest part of the
elevators and ailerons.
If your radio does not have dual rates, we recommend setting
the throws at the high rate settings.
❏
3. Measure and set the low-rate elevator throw and the
high and low-rate aileron throw.
Balance the Model (C.G.)
More than any other factor, the C.G. (center of gravity/
balance point) can have the greatest effect on how a
model fl ies and could determine whether or not your fi rst
fl ight will be successful. If you value your model and wish
to enjoy it for many fl ights, DO NOT OVERLOOK THIS
IMPORTANT PROCEDURE. A model that is not properly
balanced may be unstable and possibly unfl yable.
❏
1. Use a fi ne-point felt tip pen to mark the balance point
on the top of wing 3-3/8" [86mm] back from the cutout in
the leading edge. Apply narrow (1/16" [2mm]) strips of tape
over the lines so you will be able to feel them when lifting the
model with your fi ngers.