6
GET THE MODEL READY TO FLY
Check the Control Directions
❏
1. Turn on the transmitter and receiver and center
the trims.
❏
2. With the transmitter and receiver still on, check
all the control surfaces to see if they are centered. If
necessary, adjust the pushrod connectors on the control
surface pushrods.
❏
3. Make certain that the control surfaces and the
throttle 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. Be
certain the control surfaces have remained centered.
Adjust if necessary.
❏
4. Now would be a good time to test the operation of the EDF. Arm the ESC by advancing the throttle stick to full throttle, then
back to the idle position (Futaba and Tactic transmitters will require you to change the throttle servo reversing to REV). Slowly
advance the the throttle. If the motor is rotating the wrong direction, open the duct channel hatch and swap any two of the three
motor leads.
Set the Control Throws
These are the recommended control surface throws:
ELEVATOR
LOW RATE
AILERONS
HIGH RATE
1/8"
[3.2 mm]
4°
Up
3/32"
[2.4 mm]
4°
Up
5/16"
[8 mm]
10°
Up
3/16"
[4.8 mm]
8°
Up
1/8"
[3.2 mm]
4°
Down
3/32"
[2.4 mm]
4°
Down
5/16"
[8 mm]
10°
Down
3/16"
[4.8 mm]
8°
Down
Use an Accu-Throw
™
or ruler to accurately measure and set the control throw of each control surface as indicated in the chart.
If your radio does not have dual rates, we recommend setting the throws at the
low
rate setting.
NOTE
: The throws are measured at the
widest
part of the control surfaces.
IMPORTANT:
The L-39 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 L-39 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.”
It is best to avoid reducing the control throws in your ATV or AFR settings in your computer radio. This will result in a loss of
resolution of the control surfaces and the plane will fly less precisely. Instead, move the Z-bends or screw-lock connector inward
on the servo arms where possible to reduce the throws mechanically before making reductions in the transmitter menus.
FULL
THROTTLE
ELEVATOR
MOVES DOWN
RIGHT AILERON
MOVES UP
LEFT AILERON
MOVES DOWN
R
L
3-CHANNEL RADIO SETUP
(STANDARD MODE 2)
