18 7
• First, follow your model’s
instructions carefully for proper
installation and fitting of the retract
mechanisms. [If you are using
mechanical retracts, the most
secure means of operation is with
a true “retract servo” such as
Futaba’s S136G (not included).
See "Retract Servo" in the
glossary on page 21.]
• The retract channel has no
AST (Adjustable Servo Travel).
Therefore, you MUST properly
set it up mechanically to ensure
“lock” on the gear and to avoid
binding or buzzing of the servo.
• When everything is operating
properly by hand, plug the retract
servo into slot 5 on the Rx. Test
the gear’s movement. Reverse
the servo, if required, per the
instructions on page 11.
RETRACTABLE LANDING GEAR
BEFORE
AFTER
• The transmitter includes a genuine Futaba 8-cell
NiCd battery pack, NT8S, already installed.
Please see page 3 regarding information on
proper disposal of these batteries.
• Do NOT attempt to use your radio prior to
properly charging both your transmitter and
receiver battery packs. Using the included wall
charger, plug your transmitter charge lead into
the charge jack on your transmitter, and plug the
receiver charge lead into the receiver pack’s
lead and allow the batteries to charge for 16-20
hours prior to use. (Be sure both LED charger
lights are lit.)
• Always charge your
radio system overnight
with the wall charger or
otherwise peak the
batteries prior to use.
Although the wall
charger’s average charge
rate is approximately
50mAh, because of the
resistance of the
batteries it is always best
to use the wall charger for at least 8 hours prior
to flying. Use a loading voltmeter to check the
voltage of the receiver pack between each use,
charging the receiver battery to its peak voltage
prior to using it any time the voltage indicator
reads less than 5.0 volts for the receiver pack.
• You may use an optional 5-cell, 6-volt receiver
battery pack (NR5F) with your new radio
system. Note, however, that while 6 volts
provides more torque and speed from the
servos, it also provides a significantly shorter
run time for the same capacity and may shorten
the life of the servos proportionally.
This can be confusing, so it may help to
compare the current in the battery to water in a
bucket. If you have four small holes in the
bucket, the water will come out at a certain rate.
Add a fifth hole the same size, and you’re
supplying more water (increasing the current
and therefore making the servos stronger AND
faster); however, the bucket empties 20%
sooner than when it only had four holes.
• NiCd batteries discharge, or lose power, on a
gradual curve. However, this curve is not a flat
line; that is to say, if the pack uses 100mA in the
first 10 minutes it will not continue to provide
100mA every 10 minutes until it is fully
discharged. Rather, it starts out providing at a
certain rate, then its output drops off in a curve
which becomes very steep as the pack
approaches discharge. Because of this
discharge curve, it is imperative that you check
battery voltage immediately prior to each use.
Servo
Screws
Rubber
Isolators
Grommets
Servo
Rail
BATTERY CARE
INSTALLING SERVOS
Assemble and mount your servos.
Note: the grommets must be installed as shown
(large end against the aircraft) to provide proper
isolation. A small drop of medium CA on each
isolator prior to installation will secure it to the
servo and ease installation.
Slot 5
1. Plug the retract servo
into slot 5.
2. Activate Retract switch.
3. Retracts come up.
