Futaba 8SGAP User Manual

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Futaba

DIGITAL PROPORTIONAL RADIO CONTROL

PCM

PULSE CODE MODULATION SYSTEM

INSTRUCTION MANUAL

FP-8SGAP

PCM 8 CHANNELS, FOR F3A AIRCRAFT

D60354

Thank you for purchasing a Futaba

digital proportional radio control set.

Please read this manual carefully before using your set.

TABLE OF CONTENTS

GENERAL INFORMATION

Features

............................

Contents and Ratings Glossary of Terms Basic

Transmitter Batteries and Charging Tachometer/Timer Receiver

and

S130 and FP-S130G

Splined Horns..........................

ADJUSTMENTS

Basic

Linkages and Using ATV (Adjustable Travel 2ND

ATV (Conventional)

Servo

Reversing Using Dual Rate (Aileron, Rudder Auto Dual Using VTR (Variable Suggestions on ATV , D/R. and VT R Using ATL FS BFS (Battery Fail

Servo Aircraft with Variable Pitch Throttle Aircraft Elevator/Flap Flap/Elevator Aircraft Flap Snap Programmable Mutual (Bi-directional) Mixing (FLPRON,

ELEVN, V TAIL,

(Fail

Trim

Roll

Safe)

Test

Position

with

Function Switch

(Adjustable

Functions

....................

......................

Controls

.................

Instructions

Operation

Servos

......................

Exploded

AND

Installation

Switches

...................

Rate

....................

Trace

Throttle

and

HOLD

Functions

Safe)

and

......................

Trimmer

Flaps

.......................

Mixing

.....................

Mixing

(Pre-Set Flaps and Elev.

Flaps and Spoilers (Airbrake)

......................

........................

Mixing

and Examples.

DIFF)

...................

............

.................

Views

FLIGHT

...................

Elevator, and Rudder)

..................

TECHNIQUES

...............

Volume)

Ratio)

..............

.............

Limit)

.............

BFS Memory

Prop

..............

............

...........

..........

...........

.........

.....

Trim)....

INDEX FOR TRIMMER PANEL FUNCTIONS

Switch or Description Ref.

Trimmer Number

1 Aileron Dual

Aileron 3 Aileron Linear/VTR 4

Throttle Delay 5

Pitch Delay Trimmer 6

Throttle/Pitch 7 Throttle/Pitch Mixing Safety 8

Throttle 9

Elevator Flap

& 12 Programmable Mixing Rate Trimmers .....

Slave

Master Channel

Aileron Differential Trimmer

ELEVN/V. Tail

FLPRON/DIFF

Flap

Airbrake Elevator

Airbrake Flap

Rudder 22 Rudder 23

Elevator Dual Rate Trimmer

Elevator Linear/VTR Safety

25-28

Snap Roll Timer Setting

Snap

Switch 16 Function Select

Automatic

Flap, Spoiler Elevator

Throttle Flap, Spoiler Elevator Mixing Switch . . . . ,

34-35 Aileron

36-37

Elevator

38-45

Servo 46-47 ATV/FS 48

Channel Select

49 Function Select Switch

Rate 1Trimmer

Dual

Rate 2 Trimmer

Safety Switch

Trimmer

...................

Mixing

Trimmer

Position

Trimmer

Mixing

Trimmer

Mixing

Safety Switch

Channel

Mixing

Board

Mixing

Switch

Roll

Mixing

........................

Trimmer

Dual

Rate

Linear/VTR Safety

Reversing

Trimmer

Safety

Switch

Dual

Rate

2ND

ATV Trimmers

2ND

ATV

Switches

Buttons

....................

Switch

Rudder

Mixing

Trimmer

...................

..............

.................

...............

Board

Switch Switch

...............

.................

..................

..........

.............

Switch

..........

.............

..........

..............

.............

...............

Switch

..............

Switch Trimmers (Optional)

Switch

Safety

Switch

...............

..........

...........

Switch

..........

.............

. .

......

Page

NOTE:

Please read and follow instructions fo r installation and usage in their entirety and follow carefully. Failure to follow instructions could result in serious property damage and/or personal injury. This system is intended for use by experienced R/C hobbyists. Beginners should seek expert advice and Assistance before operating this system.

•FEATURES

The FP-8SGAP was specially developed to use PCM (pulse code modulation) for FAI RC aerobatics F3A aircraft. It is an extremely noise and dead-point resistant digital proportional RC set with a microprocessor in the transmitter and the receiver. Please read this manual before using your set.

TRANSMITTER FP-T8SGAP

• RF module system. The frequency band can be changed with one touch.

• DSC (Direct Servo Controller) allows operation of

the

servos

without turning

Wire operation is possible by using the special

cord supplied (FSC.1)

•Servo reversing switch for all channels reversing

• Dual rate or non-linear VTR (variable trace ratio) aileron, elevator, and rudder. Two-stage

dual rate on aileron.

• Rudder auto dual rate. Rudder dual rate is turned on and off automatically with operation of the throttle stick.

• Newly designed slantable open gimbal sticks provide maximum operation feel. Stick angle and spring strength can be adjusted.

• Non-slip adjustable lever head. The can be adjusted by turning the knob head.

• New throttle -> pitch control mixing is for variable pitch propeller which maximizes engine power and propeller efficiency.

•Mutual tor, and aileron differential operation.

• Elevator -> flap mixing is especially advantageous i n circle ae robatics.

• Flap, spoiler -> elevator mixing allows control of the aircraft attitude while using the air brake (flap, spoiler).

• Throttle -> (flap, spoiler) -> elevator mixing allows enhancement of the air braking effect by throttle stick operation when diving and landing.

• Programmable mixing function permits mixing

with the desired channel.

• Four-function snap roll

al)

• Idle-up lever, the engine idling speed can be independently adjusted during throttle -> pitch

control mixing.

• New single-chip microprocessor allows one-touch

fail safe setting and introduction of an automatic transmission system which eliminates the need for fail safe setting at the beginning of each flight and improves safety.

the

servos

with the fl ip of a switch.

mixing

aileron + flaps, and aileron +

function

on the tr ansmitter.

allows

stick length

perfect

allows aileron+ eleva-

rudder mixing

switch (timer is option-

•Pitch

control pitch propeller can be adjusted during throttle -> pitch control mixing.

• New ATV (Adjustable Travel Volume) on all channels allows independent adjustment of servo left, right, up, and down throw.

•Second ATV. Besides new pushbutton ATV on aileron and elevator, conventional trimmer ATV is also installed.

• Monitor lamp comes on when throttle -> flap,

spoiler -> elevator mixing or throttle -> pitch control mixing and flap, spoiler -> elevator mix-

ing and snap roll are set and goes out when they

are

use.

• Fail-safe switch (function OFF switch) is provided for each function so that only the desired functions need be turned on.

•Throttle ATL (Adjustable Throttle Limiter) makes throttle linkage simple and positive.

• Two s e rv o tes t functions. A slow sweep to neutral characteristic, trackability cycle servo to test servo operation.

•Tachometer/timer with built-in tachometer, up timer, down timer, integrating timers, and battery alarm functions.

• Built-in power error back-up circuit. When the internal Nicd battery approaches the fully discharged state, an LED flashes to indicate that

the memories presetted (memory, ATV, FS, etc.) are gone. Please charge battery and set all memory functions again.

• Highest quality extruded aluminum case. So-

phisticated transmitter design gives easy fitness and comfortable feeling to your hands.

• Neck strap supplied as a standard accessory. The numerous functions of the transmitter can be

easily performed by supporting the transmitter

fro m your neck.

lever.

HIGH

side

pitch of

variable

check

RECEIVER FP-R118GP

•The

receiver

ceiver in which the highest reliability has been

pursued. It is the first R/C receiver in the world

to incorporate the newest computer technology.

• Miniature PCM receiver with high speed single microprocessor. Resistance to adjacent band and

spark noise interference has been increased by one full order of magnitude.

• Microprocessor servo hold function eliminates

erroneous operation is entered.

• Microprocessor provides fail safe and battery fail

safe functions for greater safety.

• Error lamp display allows checking of the receiv-

er operating state.

this

set

when a "dead

is a miniature PCM

point"

re-

area

SERVO FP-S130

•Small, double ball bearing, water-tight & dust-

tight servo. High output torque 55.6 oz-in (5kgcm), high-speed .24sec/60 .

• New indirect drive potentiometer improves

vibration and shock resistance and neutral precision.

• Futaba low-power custom 1C provides high start-

ing torque, narrow dead band, and excellent trackability.

• Fiberglass reinforced PBT (polybutylene ter-

ephthalate) molded servo case is mechanically strong and invulnerable to glow fuel.

• DC-DC converter in the power supply improves low-voltage operation characteristics.

• High sensitivity design with RF amplifier.

• Ultra narrow-band ce ramic filter and PCM sys-

tem are invulnerable to adjacent band interference.

• Gold plated connector pins eliminate poor con-

tact. Polarized housing improves reliability against shock and vibration.

•

DSC

circuit. Each the transmitter without turning on the transmitter by connecting the transmitter directly to the C terminal.

• Strong polyacetal resin ultra-precision servo gear features smooth operation, positive neutral, and very little backlash.

• Fiberglass reinforced epoxy resin PC board with

thru-the-hole plating improves servo amp vibration

and shock

•Thick

gold

plated connector pins contact and improve reliability against shock and vibration. The connector housing is polarized to prevent reverse insertion.

• Si x special adjustable splined horns.

servo

can be

resistance.

controlled

ensure

from

positive

SERVO FP-S130G

•Small

retractable

class

5-pole

4.7kg-cm, high-speed 0.34sec/60°, waterproof type.

•Since forward/reverse operation is controlled by the pulse width of the signal generated by turn-

ing the transmitter snap switch on and off, the motor stops at the end of its throw in either direction.

• Unlike other proportional servos, motor drive current does not flow when the servo is stopped even if a load is applied. Thus current drain is extremely low.

landing

micromotor.

gear High

servo

output

with

high

torque

• Fiberglass reinforced PBT (polybutylene terephthalate) injection molded servo case is mechanically strong and invulnerable to glow fuel.

•Strong

•

•Thick gold plated connector pins ensure positive

polyacetal features smooth operation, positive neutral, and very little backlash. Fiberglass

thru-the-hole plating improves servo amp vibration

contact and improve reliability against shock and

vibration. The connector housing is polarized to prevent reverse insertion.

reinforced

and shock

resin

ultra-precision

epoxy

resistance.

resin PC

servo

board

gear

with

•CONTENTS AND RATINGS

Ratings and specifications are subject to change without prior notice.

Model Transmitter

Receiver Servos Switch

Nicd battery

Accessories

Battery charger, landing gear adaptor, DSC cord, CHG adaptor, DSC-CHG cord, servo tray, frequency flag, spare horn, neck strap, screws

FP-8SGAP

FP-T8SGAP x 1 with module FP-TF-FM FP-R118GPx 1 FP-S130x4

SWH-5x 1 (R4-SWJx 1) NR-4J x 1

Transmitter FP-T8SGAP Receiver FP-R118GP

Operating system

Transmitting frequency

Modulation Power requirement

Current drain

: Two-stick, 8 channels for

F3A pattern

: 50/53MHz BANDS

72/75MHz BANDS 53MHz

<->

72MHz Frequency change to any of above bands is possible by merely changing RF module.

PCM, FM

: 9.6V 8/500mAH internal

Nicd battery

: 250mA

Chosen band

Receiving frequency

Intermediate frequency Power requirement

Current drain Dimensions

Weight

Receiving range

50/53MHz BANDS 72/75MHz BANDS 455kHz

4.8V Nicd battery (shared with servo) 42mA (4.8V reception)

2.23 x 1 . 65x0.94 in (57 x 52 x 24mm)

1.85oz (53g) 500m on the ground 1000m in the a ir

When FP-T8SGAP used.

(At the best radio wave con-

dition of environment)

Chosen band

Servo FP-S130

Control system

Operating angle

Power requirement Current drain Output torque Operating speed Dimensions

Weight

+pulse width control, 1520

uS.N

One side 45° or greater (including trim)

4.8V

(shared

5mA (at idle)

55.6oz.in (4kg-cm)

0.24 sec/60°

1.52x0.77 x 1.36 in (38.5 x 19.5x34.5mm)

1.47oz (42g)

Battery Charger FBC-8B(2)

Input voltage

Output

: 120 VAC, 50/60 Hz : TX side 9.6V/45mA

RX side 4.8V/45mA

with

receiver)

Landing Gear Servo FP-S130G (Option)

Control system Operating angle Power requirement Current drain Output torque Operating speed Dimensions

Weight

+pulse width control

Rotary approx 160°

4.8V (shared with receiver) 8mA (at idle)

65.3oz.in (4.7kg-cm)

0.34 sec/60°

1.52 x 0.77 x 1.36

(38.5 x 19.5 x 34.5mm)

1.48oz

(42g)

Receiver Servo Nicd Battery NR-4J

Voltage

Dimensions

Weight

: 4.8V, 4/500mAH :

2.01 x 2.28 x 0.59 (51 x 58 x 15mm)

: 3.35oz (95g)

•GLOSSARY O F TERMS

NOTE: Please take the time to familiarize yourself with the terms and abbreviations below. They will be used throughout the instructions and are important in understanding the operation and potential of your system.

PCM (Pulse Code Modulation)

Pulse Code Modulation utilizes a precise digital

code to convey information from the transmitter encoder to the receiver. This state of the art method makes many of the sophisticated functions of the FP-8SGAP possible, as well as providing far superior immunity to noise and interference than is possible with conventional encoding methods.

ATV (Adjustable Travel Volume) This feature allows independent adjustment of servo travel in each direction. ATV is sometimes referred to as "endpoint adjustment". Two different types of ATV ar e standard with this system,

(1) Pushbutton or Programmed (Memory) ATV and (2) 2nd ATV (Conventional).

MEMORY ATV This type is available on all eight channels. These adjustments are stored in the transmitter memory circuit and are retained when the power switch is turned OFF. They are lost however, if the transmitter Nicd batteries reach full discharge.

2ND

ATV Available on Aileron (CH 1) and Elevator (CH 2). This is the conventional type ATV which is set

using trimmer pots on the transmitter back panel.

These

settings are

batteries are discharged. DUAL RATE

Rate switches allow the pilot to select different servo travel limits (for varying control sensitivity) in flight. Servo travel is affected equally in both directions from center.

SAFETY These switches, located on the transmitter trimmer panel allow mixing and certain other functions to be deactivated when not desired. When the Safety Switches are set to the INHIB position, the function will remain OF F even if the transmitter control switch is set to ON.

VTR (VARIABLE TRACE RATIO)

This is a special type of non-linear control re-

sponse. When VTR is used, servo travel is normal

and linear up to about 80 percent of the transmit-

ter control stick movement where the servo travel

is abruptly increased to a higher rate (both rates adjustable). This allows a normal fee l for most f l y-

ing with extra movement available for emergencies and certain aerobatic maneuvers. Another way to think of this function is as "automatic Dual Rate".

(ACT/INHIB)

NOT affected if the transmitter

SWITCHES

SERVO This function allows the modeler to reverse the direction of servo movement (in relation to control stick movement) for various installation requirements. This can be done by conveniently flipping a switch on the trimmer panel. Servo travel and neutral position are not affected.

BFS This function provides a warning to the flyer when airborne battery voltage reaches a critically low

level

or slow position. ATL (Adjustable Throttle Limit)

This feature makes adjusting the throttle linkage much the LOW or IDLE position and not the HIGH throttle servo position. Therefore, the linkage can be set for proper opening at high throttle and the trim out changing the maximum opening.

MIXING

In general, mixing functions allow two or more different channels to be operated by moving a single transmitter control. Many useful and versatile functions are made possible in this manner. Three types of mixing functions are provided.

(1) Unidirectional mixing — This function allows one or more channels to be "slaved" to a "master" channel. Movement of the master channel control causes movement of both master and slaved servos simultaneously. Operation of the slave channel control however, does not cause movement of the master channel servo. An example is Aileron/Rudder mixing (see page 33) where the Rudder is

slaved to Ailerons for coordinated turns.

(2) Mutual (Bi-Directional) Mixing — With this

type of mixing, two channels are mixed so that operation of the control for either channel causes movement of both servos. This is useful in provid-

ing sophisticated functions such as V-tail opera-

tion,

(3) Switch-Activated Mixing — Two or more

channels can be programmed so that the servos involved move to a preset position when a transmitter control switch is pulled or button pushed. Snap roll switches, roll buttons, and pre-set flap switches are examples of this type of mixing.

REVERSING

(Battery

by moving

easier.

lever used

flaprons, and

Fail

The

Safe)

the

throttle

set

elevons

the

servo

trim

proper

tailless

lever

idle

medium

affects

speed

designs.

slow

only

with-

PROGRAMMED MIXING FAIL SAFE

Unidirectional mixing of any two channels desired is possible using the pin board and jumper connectors on the transmitter back panel. Either chan-

nel

may be

DSC (Direct Servo Control)

Operation of the entire system with the transmitter switch in OFF position is possible using the DSC cord. This is useful for checking and adjusting control movements on the ground while someone else is flying on your frequency.

designatedas"master" or "slave"

The Fail Safe function moves servos to a pre-set position if the transmitter signal is lost or interrupted by strong interferrence. The held in the again received at which time Fail Safe is released.

HOLD

The Hold function holds servos at the same position as immediately prior to signal interruption. Hold is released when a proper signal is resumed.

pre-set

position

until a proper

•BASIC TRANSMITTER CONTROLS

The servo reversing switches are assumed to be in the normal position in the descriptions in this section. When the reversing switches are in the reverse position, servo operation is the opposite of that described here.

servos

will

signal

Aileron stick

Elevator stick Throttle stick Rudder stick

Landing gear switch Controls the landing gear.

Flap and flap trim control (CH6) knob Spoiler (CH7) control knob Pitch control (CH8) lever

HIGH side trimmer Idle-up lever

Flap, spoiler -> elevator (6, 7 -> 2) mixing ONOFF switch

Throttle -> (flap, spoiler) -> elevator

2) mixing / Throttle -> pitch control mixing ON-OFF switch

Elevator -> flap (2 -> 6) mixing ON-OFF switch Snap Roll ON-OFF switch (self of f) Aileron dual rate switch (2-stage) Elevator dual rate switch Rudder dual rate/Programmable mixing ON-

OFF switch Aileron trim lever Elevator trim lever

Controls the ailerons. Controls the elevators. Controls the throttle. Controls the rudder.

and pitch control

(3 -> 6, 7 ->

19 Throttle trim lever with ATL

20 Rudder trim lever 21 Tachometer/timer

The tachometer/timer has the following functions:

7. TACHOMETER

• Measurement by external sensor.

• Two blade propeller specifications: LOW range 100 to 30,000 rpm

Error 100 rpm

HIGH range 100 to 60,000 rpm

Error 200 rpm

2. UP TIMER

• 0 to 60 minutes

3. DOWN TIMER

•

60 to 0

minutes

4. INTEGRATING TIMER

• 0 to 60 hours with minutes display.

5. BATTERY ALARM

• Al ar m sounds when t h e transmitter Nicd

batteries

with seconds display.

with

approach the

seconds

usage

display.

limit.

Monitor Lamps

IMPORTANT: In all instructions on control functions. Items designated by a number inside a circle (For example 10 ) are transmitter controls normally accessable and operated in flight. Items designated by a number within a box (Fo r example 10 ) are adjustment functions not operated

while in flight.

•Lamp A Power Monitor

• When the power switch 23 is set to ON, this lamp flashes on briefly and then goes out momentarily as the Fail Safe data is automatically matically transmitted to the receiver. Fail Safe data is transmitted every 60 seconds at which time the lamp al so goes ou t momentarily. If the transmitter Nicd battery nears full discharge, this lamp starts blinking, indicating that the power error backup function is activated. When this occurs, transmitter memory function settings are los t and must be reset.

Lamp B3 -> 6, 7 -> 2 / 3 -> 8 Mix

This lamp comes on when Safety Switch 7 and/or 33 is set to ACT position, indicating that throttle — flap, spoiler -> elevator

mixing and/or throttle — pitch control mixing functions are activated. This lamp will blink when transmitter control switch II is set to ON (placing these functions in operation).

Lamp C 6, 7 -> 2 Mix 32

• This lamp comes on when Safety Switch 32] is set to ON (flap,

When the power switch 23

is set to ON, lamp A will

go out momentarily.

This indicates automatic data transmission on and is

not a failure.

spoiler — elevator mix) or CH7 OFF (flap -> elevator mix) position. This lamp blinks when transmitter control switch 10 is set to ON.

Lamp D Snap Roll

•When Safety Switch 29 is set to ACT (snap roll function activated), this lamp blinks. When the Snap Roll switch 13 is pulled, this lamp continues blinking.

Power switch

• The transmitter power ON-OFF switch is provided with a locking feature to prevent accidental movement. To operate the switch, pull the knob gently outwards and set to the desired position (UP-ON, DOWN=OFF).

Hook Metal hook for the accessory neck strap.

Level meter

•This meter indicates the transmitter battery voltage and output power.

•When the antenna 26 is extended fully and the power switch 23 is set to ON, the pointer should move to the white zone.

• If the transmitter RF Module 32 is not installed, the meter pointer will not move.

• If the meter pointer moves to the red zone, indicating that the Nicd battery voltage is low,

the signal range will become shorter. If the Tachometer/timer 21 power switch is ON, the battery alarm function will operate after about one more flight. When the meter pointer stops at the boundary between the white and red

zones, recharge the battery.

Antenna Strong 1m 10cm telescoping antenna. Extend the antenna to its full height when using the transmitter. The antenna will lock in place with a click when pulled up to its full height.

Carrying handle

Tachometer sensor connector

• When not using this connector and the charging socket 29, cover them with the rubberbacked cover supplied to protect them against

dust. Charging socket and DSC (Direct Servo Con-

troller) connector

•This

connector

used

both

the

charging socket and DSC connector. See page 10 for charging instructions.

Non-slip adjustable lever head

The length of the lever head can be adjusted to fit the operator.

Lever head

Fig.

Unlock lever heads

, by turning them and in the arrow direction, and adjust the head to the most comfortable length.

Slantable stick adjusting screws

The angle of the stick levers can be changed.

Fig.

Turn this screw with a Phillips screw-driver.

The open gimbal st ick angle can be adjusted from about 3° to the inside to

4.5° to the outside by turning the adjusting screw as shown in the figure. Adjust the stick to the

Phillips screwdriver

most comfortable angle.

The strength of the stick lever spring can be adjusted.

Remove these

screws, and remove the

back cover.

MODE I

Fig.

Aileron

5-A

Turnwith a Phillips screwdriver.

Rudder

Elevator

The spring strength can be adjusted as desired by

removing the transmitter back cover and turning the adjusting screw of each stick. Adjust the spring strength for the best stick feel.

MODEII

Remove the three screws shown and remove the

transmitter righthand side panel as shown in

Fig. 5-B. Displace th eside panel away from the case. (slide down-off) Disconnect the power connector. Adjust the spring tension. Cautions

• Be sur e that the PC board attached to the side

panel does not touch the transmitter case.

• Disconnect the power connector before side

panel completely off, while side down-ward, to avoid touching wit h T X case.

•When the power connector is disconnected,

the memorized contents (ATV, FS, etc.) are cleared. When flying again, reset the contents.

Elevator

Aileron

Rudder

Transmitter RF module

• Change this module when switching frequency bands

(50, 53, 72, and 75MHz).

A temperature rise at the RF module section during use is normal.

Fig.

Fig. 5-B

The side panel can

be removed by

removing these

three screws.

Transmitter crystal

While pushing this tab to the

inside, pull t h e RF module forward.

Power connector

Mini stand

• Use this stand as shown

in Figure when laying the transmitter down. This makes operation

easier and protects the

RF module and

transmitter back.

The 4 rubber feet

supplied can also be

installed using the transmitter back screws.

* NOTE: The 4 rubber feet supplied as accessories

can be installed on the transmitter back (using the longer back cover retaining screws) to provide additional protection.

Snap roll direction switch (R/L) Snap roll direction switch (UP/DOWN)

• These switches control the direction of

the snap roll

when the Snap roll switch 13 is used.

Fig.

Fail safe set button

• This pushbutton is used when setting the Fail Safe servo positions (FS instructions Page 25).

Fig.

Back Cover

• Removal of this cover exposes the trimmer panel. Remove as shown in Fig. 10.

Remove the back cover by pulling

these stoppers in the arrow direc-

Left-right

Fig.

Trimmer Panel

•This

panel

transmitter functions. Use the small screwdriver supplied with the set for making adjustments.

switching

contains switches,

Up-down switching

buttons,

and trimmers

tion.

for

setting and adjusting the many

versatile

Fig.

Fig. 11

•BATTERIES AND CHARGING INSTRUCTIONS

TX (transmitter)

AC-120V

Battery charger FBC-8B (2)

LED

Antenna

RX (receiver)

Receiver

Female

Male

NR-4J

•The

Direct

Servo

Controller

system connects

the signals from the transmitter directly to

terminal C of the receiver through a wire and controls the servos without radiating radiowaves. It is extremely convenient when flying on the same band or during meets, etc.

Female

Install the accessory

DSC.CHG

Female

Fig. 12

Charging socket

and

DCS

connector

Male

DSC.CHG cord

(connector with tab)

to the side of the

aircraft fuselage to

Female

CHG

Adaptor

use the charging/DSC

socket.

cord

Male

Notes:

(1) First, connect to TX Nicd and red lamp goes o n . (2) Then, connect to R X Nicd after connecting, L.E.D.

changes color from red to greenish red (orange)

which indicates that both T X and R X Nicds are being charged.

(3) In case o f separate charging, L.E.D, color will be:

RX Nicd-Green TX Nicd - Red

Female

•Make the connections shown in Fig.12. Connecting the special DSC.CHG cord w ith ta b to receiver terminal C and installing it to the side

of the aircraft fuselage is very convenient.

•When the DIN connector of the DSC cord is

connected to the DSC connector 29, the

power to the encoder inside the transmitter is

turned on. The transmitter power switch is OFF.

• When

not using the DSC, disconnect the DIN

connector.

• To operate the servos, turn on the receiver

andservo switch.

Make this

connection when

using the DSC.

DSC cord

Female

Before using your system, recharge the Nicd batteries as follows:

•Connect the DIN connector of the FBC8B (2) battery charger to the transmitter charging socket 29 . Also connect the 3P connector to the airborne NR-4J Nicd battery and plug the battery charger into a 120VAC outlet as shown in Fig. 12 . The airborne batteries can also be charged through the DSC/CHG harness by connecting the CHG adaptor to the charger as shown in Fig.12. In this manner, t he airborne batteries can be charged

without removing them from the model.

• Normally recharge the battery for about 15 hours. If it has not been used for some time, discharge and recharge it two or three times and then charge it a full 15 hours.

• The amount of time remaining be fore the batteries must be recharged can be estimated using the Integrating Timer function of the Tachometer/Timer 21 . It is recommended that this function be used to monitor remaining flying time.

(See Page 11 for detailed instructions.)

• The transmitter and receiver together or independently.

•A fully-charged transmitter battery can be used for about 10 flights of 10 minutes each. The airborne NR-4J Nicd battery can be used for about 6 flights when about 4 flights when 10 servos are used.

• If the system is not to be used for some time, it should be fully

charged before storage and recharged monthly to avoid full

discharge and loss of memory settings (ATV, FS, BFS memory, etc.).

Nicd batteries can be charged

6 servos are used and

•TACHOMETER/TIMER OPERATION

LIQUID CRYSTAL DISPLAY

Switches the range when used as a tachometer. LOW - 100 to 30,000 rpm.

HIGH -100to60,000 rpm

Tachometer/timer power switch.

is displayed at the mode selected at

the MODE SEL key switch

INTEGRATING TIMER

Blinks during counting and stops blinking when counting stops.

Do not press the keys too quickly. Press them at a speed of about once per second. |

Selects the tachometer/timer mode.

The INTE GRATING TIMER mode is selected and

is displayed when the power is turned on,

The first time this switch is pressed, the UP TIMER mode is selected and

The second time it is pressed, the DOWN TIMER mode is selected and

The

third

time

pressed,

mode is selected and is displayed.

is displayed.

the

TACHOMETER

Fig. 13

UP TIMER

DOWN TIMER

TACHOMETER

The fourth time t h i s switch is pressed, the tachometer/timer returns to the INTEGRATING

TIMER mode and

This switch sets the alarm time in the UP TIMER and DOWN TIMER modes. One minute is set each time th is key is pressed. If it is pressed and held for two seconds or longer, the time is set in 5 minute steps. A beeping signal begins 10 seconds before the dot time. A beep is produced every minute to ind ica te the lapse of time.

This switch is used for memorization, starting, stopping, and clearing in the UP TIMER and DOWN TIMER modes. In the INTEGRATING TIMER mode, thi s switch acts as the reset switch.

Do not expose the display to direct sunlight

for a long time.

is displayed.

OPERATING INSTRUCTIONS

Tachometer

Set the tachometer/times POWER switch to ON.

appears on the display. Next, press the MODE SEL key switch at the upper-right corner three times. The display changes to and the tachometer mode is selected. Hold the sensor

about 20 to 30 cm from the rotating propeller

(two blade). The propeller speed is displayed on

the

LCD.

indicates that the propeller is rotating at 12,300

rpm, set the REVOLUTION RANGE switch at the upper left-hand corner to LOW and for propeller speeds above 30,000 rpm, set the REVOLUTION

RANGE switch to HIGH.

The speed of a three blade valueThe speed of a four blade propeller is 1/2 the displayed value.

rpm. For propeller speeds up to 30,000

propeller is displayed

3x2.

Make all speed measurements outdoors under natural lighting. Accurate speed measurements cannot be made indoors under artificial lighting because of the affect of the 50 or 60 Hz power.

Measure the speed of the rotating propeller at this

point.

Sensor connector

Sensor

Connect the accessory tachometer

sensor to the sensor connector as shown above.

To measure the speed of the main rotor of a

model helicopter, measure the speed of the tail rotor as shown in Fig.16. and calculate the exact

speed from the equation.

Main rotor speed = ——————--—--—————————

Tail rotor speed Main rotor and tail rotor gear ratio

Fig. 14

Make all measurements

under natural

lighting.

Holding the sensor too close to a spinning propeller is dangerous.

The speed of model boat and car engines can also be

measured in this fashion. Warning: Use extreme caution. There is danger serious injury or death.

Sensor

Draw two lines on the flywheel with magic in k.

Fig.

Helicopter tail rotor

Fig. 16

Note do not expose the liquid crystal display to

direct sunlight for a long time.

Switches the range when used as a tachometer.

Tachometer/timer power switch.

is displayed at the mode selected at the MODE SEL KEYSW.

2 UP TIMER

Set the tachometer/timer POWER switch to ON.

key switch at the upper right-hand corner one time. The display changes to , and the UP TIMER mode is selected. When the ENTER key switch at the bottom right-hand corn er is pressed, a

beep is head and the timer starts and the second digit of the display changes every second. A beep is

is displayed. Next, press the MODE.SEL

ALARM SETTING

The alarm can be set with the TIME SET k e y. Clear the display, by pressing the ENTER key, then press theTIME SET key twice.

appears on the display indicating that two minutes was set. N ext , press the ENTER key once to memorize this two minutes. The display changes to and is memorized. Start the timer by pressing the ENTER key. The display changes every second. When the display reaches

, the timer keeps ten times, every once a second, elapsed. Thereafter the timer continues to count up to 60 minutes. If the TIME SET key is pressed and held for two seconds or longer when memorizing the alarm time, the time is set in five minute steps

to indicate that two minutes have

and the

set

alarm times

are

memorized

until

Selects the tachometer/

timer mode.

This switch sets the alarm time.

Memorize, start, stop,

and clear switch.

Fig.

produced every minute to indicate the passage of time.

stop

counting, switch again. The usage time is displayed on the display. For example, means that 12 minutes 05 seconds had elapsed. The UP TIMER mode can

be used as a second stop watch. To clear the dis-

play , press the ENTER key switch again.

the power is turned off or reset. If the timer is started without setting the time after the display has been cleared, the previously set alarm time remains effective. An arbitrary alarm 59 minutes can be set.

press

the ENTER key

time up to

3 DOWN TIMER

Set the tachometer/timer POWER switch to ON and press the MODE SEL key twic e.

the DOWN TIMER mode was selected. Next, press the ENTER key. The timer keeps.

appears on the display, and the display begins to count down every second. The timer keeps every second from 10 seconds before the end of the count-down, the same as the UP TIMER.

appears on the display to indicate that

TIME AND ALARM SETTING

Set

the time and alar m wit h the TIME SET key,

the same as the UP TIMER. To set the alarm to

at the display, clear the display by

pressing the ENTER key, then press the TIME SET key three times. Next, memorize this time by pressing the ENTER key again. The display begins to count down in seconds. When the display begins to count down in seconds. When the display reaches , the timer begins to keep every second to indicate that three minutes have elapsed. If the TIME SET key is pressed and held for two or more seconds, the time is set in five minute steps, the same as the UP COUNTER, and the alarm can be set to any desired time up to 33 minutes.

4 INTEGRATING TIMER

Set the tachometer/timer POWER switch and the transmitter power switch to ON. The blinks, counting begins, and the elapsed time is displayed

in minutes. For example, indicates that three minutes have elapsed. If the transmitter power switch is set to OF F , counting stops. When the transmitter power switch is turned back on, counting continues. The integrating timer function can be started and stopped as long as the tachometer/timer POWER switch is on even if

another mode is selected with the MODE.SEL

key. This can be used to monitor the transmitter operating time. If the ENTER key is pressed in the INTEGRATING TIMER mode, the old integrating time is cleared and a new count begins.

Thi s can be used to forecast the remaining Nicd battery capacity and other applications.

•RECEIVER AND SERVOS

Receiver, Servo Switch, and

Battery Connections

8SGAP 4 Servos

Aileron servo

Elevator servo

Throttleservo

Rudder servo

Landing gear servo

Flap servo

Spoiler

servo

Fig. 18

P C M RECEIVER FP-R118GP

Antenna

wire

Crystal

Fig.

Power switch

SWH-5 (R4-SWJ)

Charging plug

NR-4J

Pay careful attention to the polarity of the connector.

•This LED comes on when receiver operated erroneously.

• When t h e receiver and servo side Nicd is connected and this LED is on, radiowaves are not being received from the transmitter,

check to be sure the frequency

is correct. Checking is possible by the l amp being on.

•When strong noise has been received, or the radiowaves from the transmitter are intermittently interrupted, this lampwill blink. This is usually

not a problem.

the

Remove the receiver crystal by pulling it in

this direction.

Receiver crystal

Pitch control servo

Fig.

Fig. 21

•FP-S130 AND FP-S130G EXPLODED VIEWS

No.

Upper case

1. Middle case

2. Bottom case

3. Ball bearing

4. Potentiometer

5. VR drive plate

6. Motor

7. Motor pinion

8. 1st gear

9. 2nd gear

10. 3rd gear

11. Final gear

12. 2nd shaft

13.

14.

Intermediate shaft Spacer washer 0.3T

15. Seal ring

16.

17.

0-ring Servo horn D

18. Horn mouting screw

19. S130 printed wiring board

20. Lead wire packing

21. S1303PB-WRB-300

22. Screw O-nng

23. Case mounting screw

24. S130Nameplate

25.

PartName

Part No. FCS-30 FCS-30

FCS-30 S04130 139995 S02753 S91243 S02461 FGS-30 FGS-30 FGS-30 FGS-30 S02481 S02480 S02486 S90415 S90426 FSH-6W FSH-41 AS

1220 S90045 FPC-8M S90410 J50085 S60101

Fig.

No.

Upper case Middle case

2. Bottom case

3. Motor

4. Motor pinion

5. 1st gear

6. 2nd gear

7. 3rd gear

8. Final gear

9. Intermediate shah

10. Output shaft

11. Output shaft bearing

12. Bent washer for SX

13.

14.

Push nut Metal slider 0.08T

15. TR.13VR Body 165D

16. Fiber washer 20

17. Binding head lapping screw

18. Ball bearing

19. Spacer washer 0.3T

20. Seal ring

21. O.ring

Servo horn 0

23.

24.

Horn mounting screw

25.

S130G Pri n ted wiring board

26.

Lead wire packing

27.

S130G 3PBWRB-300 O.ring

28.

29.

Case mounting screw

30.

S130G Name plate

Pan Name

Part No. FCS-30G FCS-30G

FCS-30G S91243 S02461 FGS-30G FGS-30G FGS-30G FGS-30G S02480 S02803 S02804 S11043 J60070 140002 140000 S90332 J55016 S04130 S02486 S90415 S90426 FSH-6W FSH-41 AS1224 S90045 FPC-8M S90410 J50085 S80706

Fig.

•SPLINED HORNS

The following splined horns are optional.

HORN A HORN B HORN C HOR N D HO RN E HORN F

Fig.

This horn permits shifting of the servo neutral position at the servo horn. Setting and shifting the neutral position a) Angle divisions

Fig.

1) The splined horn has 25 segments. The amount of change per

segment is; 360-25=14.4°

2) The minimum adjustable angle is determined by the number of arms or number of the holes. For four arms, the minimum adjustable

angle is:

•The frequency of Futaba digit al proportional sets can be changed among bands (1)~(6) on

the 27MHz band only.

•However, a 27MHz band set cannot be changed

to 72MHz band, and vic e ver sa .

•Therefore, always attach the correct frequency

flag to the end of the transmitter antenna. Each frequency band has its own designated

color, as stated above. The frequency flag is

intended for identification purposes.

•Also change the frequency flag when frequency

is changed.

•Futaba paired crystals are precisely matched.

Always use a Futaba crystal set (transmitter, receiver) when changing the frequency.

•It is illegal to change crystals of transmitter on

the 72-75MHz bands in t he U.S.A.

b) Effect

Baseline A

Fig.

To shift the holes center line to the right (clockwise) relative to

baseline A, shift arm 2 to the position of arm 1 and set it to the position closest to baseline A.

(Example] For a four arm horn, the angular shift per segment is

14.4°. The shift to the right is 90°

- (14.4 x6 ) =3.6° To shift by the same angle in the opposite direction, use th e opposite arm number.

Fig.

For a si x arm horn, turn the arm counterclockwise and set arm 2 to the position of arm 1. The ad-

justable angle is 60° - (14.4 x 4)

=2.4°. Arm 3 shift 4.8° to the right, arm 6 shifts 2.4° to the left,and arm 4

shifts 7.2° to the right and left.

Fig.

•BASIC LINKAGES AND INSTALLATION

The FP-8SGAP has a servo reversing switch and ATV (Adjustable Travel Volume) for each channel. Mount the servos without regard to their direction. Select and link servo horns somewhat larger than those specified by the model manufacturer.

• Install the servos securely. Tighten the mounting screws until the rubber grommets are slightly compressed. Note: If the screws are too tight, the vibration dampening effect of the grommets will be lost.

• Use extension cords as needed.

• It is suggested that a separate servo be used on each aileron as this will allow use of the versatile mixing and differential functions built into the transmitter. Retractable landing gear can be operated with age as desired.

• Connect the pushrod to each servo horn, then check to see if the d irection of travel in relation to stick movement is correct. If the direction of travel is reversed, use th e servo reversing switches to correct.

• When installing the switch harness, cut a retangular hole slightly larger that the full stroke of the ON/OFF switch and install the switch so that it operates smoothly. It is best to i nstall the switch inside the fuselage and attach a piece of wire to

the switch so that it can be operated from outside the aircraft. Locate the switch where it will

not be exposed to engine oil, dust, etc.

•Wrap the receiver in soft foam rubber. Waterand dustproof the receiver by placing it in a

with a single

two

servos

servo

save

weight

simplify the mechanical link-

plastic bag and tyi ng the mouth of the bag with a rubber band. Do the same with the airborne battery pack. Caution: The foam rubber should be loosely wrapped and not compressed. This

will provide maximum protection from vibra-

tion.

• Use the rubber bands wrapped around the receiver to hold the servo andswitch leads.

• Even though the receiver antenna may appear to be too long, do not shorten it or fold it back.

• Be al er t fo r possible electrical noise.

This system has noise rejection circuits, however

noiseless parts are recommended.

•Operate

for slop or binding in the linkage. Unreasonable force applied to the servo horns can damage the servo or horns and will greatly shorten battery

life. Adjust linkages and servo horns so that the

servos move smoothly even when the tri m lever and stick are operated simultaneously in the same direction.

• After installation is complete, recheck each part,

then perform a range check by collapsing the transmitter antenna and extending the receiver

antenna to its full length. Operate the transmitter at a distance of 60 to 90 feet from the receiver. The servos should operate normally at this distance.

each

servo

its full

throw

and check

Normal 8 channel use (mixing and other functions not used).

Set the switches on the trimmer panel at the back of the transmitter as shown below. The switches are set as shown in Fig. 29. Connect the aileron servo to CH1, elevator servo to CH2, throttle servo

Set the DIFF

trimmer 1 5 to the INHB

(counterclock

wise).

DIFF trimmer 15 set to INHB Counterclockwise. Note: Monitor Lamps (B), (C), and (D) do not

come on at this time. Check if the direction of

operation of each servo is correct under this state.

If the di rection of operation of a servo is incorrect, reverse the position of the corresponding servo reversing switch [38] to [45]. Next, set the 2ND

to CH3, rudder servo to CH4, landing gear servo to CH5, flap servo to CH6, spoiler servo to CH7, and

the pitch control servo to CH8.

ATV trimmers on aileron and elevator to the desired deflection angles on the aircraft. The deflection angle decreases when the 2ND ATV

trimmer is turned counterclockwise. Throttle control can be adjusted with the ATL trim lever 19 This completes the settings for basic 8 channel

use.

Fig.

•USING

GENERAL - ATV (Adjustable Travel Volume)

allows independent adjustment of servo maximum throw in each direction (without affecting the neutral position). This is also sometimes referred to as "separate endpoint adjustment". ATV is very convenient when for example: a model requires more DOWN elevator deflection than UP for equal inside and outside loops (with equal control stick

ATV (ADJUSTABLE TRAVEL VOLUME)

deflection). Other aircraft may require slightly different RIGHT or LEFT aileron or rudder deflection to give equal response in each direction (due to engine torque, precision of the model, etc.). Two different ATV functions are possible with this system. Memory (Pushbutton) ATV and 2ND

ATV.

MEMORY (PUSHBUTTON) ATV

This type of ATV is available on all eight channels. Servo travel is adjusted as outlined in the example below. NOTE: Memory ATV settings are retained in the transmitter memory circuit even when the power switch is turned OFF. They are lost however, if the transmitter Nicd battery nears full discharge or is removed for servicing.

ATV SETTING

Switch switches(S), [49] and (R) [48]

Fig.

MEMORY (PUSHBUTTON) ATV - (Aileron CH1 used as example)

First,

set Function Select Switch [49] to ATV position. Set Channel Select Switch [48] to 1 (Ail.). Set the transmitter and receiver power switches ON and check for proper servo operation. Move the Aileron stick to full RIGHT aileron, hold it in that position, and set servo movement to the desired Right ai lero n deflection angle by pressing Button [46] or 47. Repeat Step 4 for LEFT aileron.

select

For other channels,

switch 48 and adjust ATV as desired. When all adjustments are completed, set the

Function Select and Channel Select switches

([48]and [49]) to OFF. To clear the ATV settings on all channels, set the Function Select switch [49] to RESET and Channel Select switch 48 to POSITION 2 (Pos. 2 = ATV when 49 is on RESET) and press Buttons 46 and 47 simultaneously. ATV is cleared

ALL

CHANNELS and

move to 100% of their maximum throw.

If only one channel is to be cleared or changed,

simply repeat Steps I through 5 with Channel Select Switch [48] set to the appropriate channel.

the channel

servos

with

will

ATV/FS BUTTON

•These two pushbutton switches are used for servo deflection angle setting of ATV, FS or HOLD function,

servo

test

start & stop;

reset; battery

Fig.

memory set, etc.

This pushbutton switch is used when:

Making the ATV servo deflection angle larger. Turning the FS function on. Starting the servo test.

This pushbutton switch is used when:

Making the ATV servo defle c ti on angle smaller. Turning the HOLD function on. Stopping the servo test.

When button 46 and 47 are pressed at the same

time, reset or battery FS memory setting is pos-

sible. At this time, lamp A of memory lamps 22 goes out momentarily so that setting can be monitored.

CHANNEL SELECT SWITCH

• This switch 48 selects the channel when setting FS and HOLD functions. It also acts as the channel select switch for SERVO TEST function.

When switch 49 is set to RESET, the Channel Select switch is used to designate the function

(ATV, FS, BFS memory, or ALL) to be cleared

by Buttons 46 and 47 . Note that the positions on switch 48 have a different meaning when the Function Select Switch is set on RESET. This is summarized in the table below:

Channel select switch

Fig.

FUNCTION SELECT SWITCH

•This

switch

selects

the

function

set

(ATV, FS, BFS memory) or test (A or B) to be performed. It is also used in the RESET position to clear ATV, FS, and BFS memory (in conjunction

with 46, 47, and 48). Note: In RESET position, the Channel Select Switch 48 is used to designate the function(s) to be cleared.

Function select switch

Fig.

• Normally set it to OFF.

ALL Switch to this position when setting fail safe for all channels, FS is described in the "HOW TO USE FS" section.

[48 Relationship among channel select switch

number, servo and reset.

At switch [49] FS SELECT,

No.

ATV, TESTA.B

Aileron Elevator

Throttle

Rudder Channel 5 switch (landing

5. gear)

Flaps

Channel 7 knob (spoiler) Channel 8 lever (variable

pitch)

RESET & TEST AL L

OFF

All the servos are operated at servo test.

Usually set to this OFF position.

At switch [49] RESET

FS (fai l safe) ATV BFS memory

FS,

ATV,

and memory are reset simultaneously.

BFS

FS SELECT

This position allows setting of fail safe and hold as described in the "HOW TO USE

FS" section.

ATV

This position allows setting ATV as described in the "HOW TO USE ATV" section.

TEST A

This position allows in the

"SERVO TEST" section.

servo test A as described

TEST B

This position allows servo test B as described in the "SERVO TEST" section.

BFS MEMO SET

Switch to this position when setting the BFS release

point

described

in the "BATTERY

FS MEMORY SETTING" section.

OFF

Normally set to this position.

PCM GREEN CHARACTER

NAMEPLATE AND RED CHARACTER NAMEPLATE RC SET COMPATIBILITY

Whe n a red character nameplate transmitter and a green character nameplate receiver are used as a pair, only the 2 FS SELECT function of the

FUNCTION SELECT switch described above is operative. In this case, switch is set to I FS ALL and the receiver mode selector switch Is set to FS. The fail safe function is ON for all channels.

(When using the hold mode, set the receiver mode selector switch to HOLD.)

When a green character nameplate transmitter and red character nameplate receiver are used as a pair, all t he function of the transmitter are operative.

•2ND

ATV

(CONVENTIONAL)

2ND ATV is available on the aileron and elevator channels. This is the conventional type ATV and is set using trimmers [34], [35]. [36], and [37] on the transmitter back panel. Servo movement can be adjusted from 0 to 100%. These adjustments are retained even if the transmitter

battery

ory ATV settings are not.).

reaches a full

Aileron right-

Aileronleft-

discharge state (Mem-

When the ATV trimmer is turned clockwise, the steering angle increases. When the ATV trimmer is

turned counterclockwise, the steering angle decreases. The steering angle can be adj us te d from 0 to

100%.

Fig.

•SERVO REVERSING SWITCHES

Elevator up

Elevator down

These switches reverse the direction of rotation of the servos. They are convenient when connecting the linkage.

NORM: Forward REV: Reverse

Throttle

Aileron

Elevator

Fig.

CH5 switch channel

Flaps

Spoiler

Pitch control

Rudder

•USING

DUAL

RATE

(AILERON, ELEVATOR, AND RUDDER)

Dual rate functions allow the flyer to alter the

maximum servo travel (and therefore control sensitivity) during flight by using the appropriate rate switch. At D/R OFF, servo deflection is maximum

in both directions (unless limited by ATV set-

AILERON DUAL RATE

• The aileron rate switch 14 has two D/R ON positions. Thus three different servo travel rates are available on aileron. Rates can be adjusted to suit varying aircraft and maneuver requirements.

Aileron dual rate trimmer (1)

This trimmer sets the aileron travel when the aileron dual rate switch 14 is set

to the dual ON I position.

Aileron dual rate trimmer 2 This trimmer sets the aileron travel when the aileron dual rate switch

14 is set to the dual ON 2 position. Trimmers [1] and [2] can adjust the aileron travel from 40% to 80% of the total travel. When the dual rate switch is set to ON, the servo throw can be set to an arbitary angle smaller than when the dual rate switch is OFF (normal) as shown in Fig. 37 . Use the throw matched to the aircraft and the maneuvers to be performed.

tings). At D/R ON, servo deflection is reduced by a percentage set with the D/R trimmers. Dual rate adjustments always effect both directions of servo travel.

LINEAR ->VTR selector

Fig. 36

ELEVATOR DUAL RATE RUDDER DUAL RATE

Fig.

This switch linearly switches the aileron servo when the aileron dual rate switch 14 is in the OFF position.

Elevator dual rate trimmer This trimmer sets the elevator deflection angle when the el evator dual rate switch 15 is in the ON position. It has the same functions as A, aileron dual rate I .

LINEAR-> VTR selector This switch changes the elevator servo operation linearity when the selector dual rate switch 16 is in the OFF position. It has the same functions as (A) aileron dual rate(1),

Fig.

Rudder dual rate trimmer This trimmer sets the rudder deflection angle when the rudder dual r at e switch 16 is in the ON position. It has the same functions as A aileron dual rate I . LINEAR-> VTR selector This switch changes the rudder servo operating linearity when the rudder dual rate switch 16 is in the OFF position. It has the same functions as (A ) aileron dual rate(1).

•RUDDER AUTO DUAL RATE

•This

function position. This allows a smaller rudder throw for precise inputs during rolling maneuvers (at HIGH throttle) and increased throw (at LOW throttle) during stall turns, taxing, etc.

automatically

switches

rudder

D/R to ON

the

throttle

lever

moved

from

LOW

HIGH

is set to ACT.

ON using Trimmer

Trimmer 8

can

used

•Transmitter control switch 16 can be used as a Rudder D/R switch or for turning the programmable mixing function ON and OFF. Usage is determined by the Function Select switch [30] on the transmitter back panel.

• When switch 30 is set to the P MIX position the programmed mixing function can be turned ON

•When the Rudder Auto D/R Safety Switch 31 is set to ACT,

rudder auto D/R is ON. If Function

Select Switch [30] is also set to

RUDD D/R, the rudder D/R can

turned ON and OFF with con-

trol switch 16 but the rudder auto

D/R function will still remain acti-

vated regardless of Switch 16.

set

Safety Switch [31]

Adjust desired Rudder travel in D/R Throttle ON and OFF . Medium slow is recommended.

SWITCH 16 FUNCTION SELECTOR

RUDDER AUTO DUAL RATE SAFETY SWITCH

Position

Fig.

the

[21].

throttle

stick

position

or OFF with switch 16 . The Rudder D/R function will not operate

unless is used.

• When switch RUDD D/R position, the rudder D/R can be turned ON or OFF with

Switch 16 . In this mode, th e programmed mixing function will remain on regardless of Switch 16 .

•When switch the rudder auto D/R function is inoperative. If Function Select

switch [30] is in the RUDD D/R

position, the rudder D/R function can be turned ON or OFF with control switch 16 . Trimmer 21 sets the rudder D/R and Auto D/R

deflection angles.

which

Rudder

D/R

Auto

D/R

[30]

[31]

is set to INHIB,

is set to the

turned

function

•USING

•VTR

(Variable

non-linear control response. It is similar to Exponential Control, but is easier to use. Aileron will b e used as an example.

•When the Aileron LINEAR/VTR Switch [3] is in the LINEAR position, servo travel is linear

and directly proportional to the deflection of the transmitter control stic k as shown in Fig. 42.

In the VTR position (Ail. D/R Switch 14 must

also be in D/R OFF pos.), servo maximum throw is unchanged. However servo tracking is the same

as when the rate switch is in the D/R I ON

position up to about 80% of the transmitter stick deflection. Servo throw then abruptly increases to the same deflection as when D/R Switch 14 is in D/R OFF position. Fig. 42 shows the servo movement curve when VTR is used. Another way to think of VTR is as "automatic dual rate" that is switched off automatically as the control stick is moved past the 80% deflection point.

VTR

Trace

Ratio)

(VARIABLE

is a new type

TRACE RATIO)

•

Note: Maximum

LINEAR and VTR modes and is determined by

ATV settings or maximum travel of the servo

itself if no ATV is set.

• If rate switches are set to D/R ON while in the VTR mode, servo tracking will revert to LINEAR

and travel is set by the D/R trimmer.

servo

travel

the

same

both

Fig.

•When the dual rate switch is

ON, operation

is the same as

when the

LINEAR-VTR

switch is set to

the LINEAR

position.

•SUGGESTIONS ON ATV, D/R, AND VTR

POINTS TO REMEMBER (ATV, D/R, VTR)

•Servo maximum deflection is always determined by ATV. If no ATV is set, maximum travel is

governed by the servo itself and is approximately 45 degrees in each direction from neutral.

•When Dual Rate is ON, servo travel in each

direction is reduced by the same percentage

(adjustable using D/R trimmers). For example, in Fig. 43 one direction has been limited using

ATV. Both sides are reduced 20% when D/R is ON. In other words, the ratio of UP to Down will be maintained when D/R is ON or OFF.

• VTR operates only when D/R is set to OFF position (LINEAR/VTR switch must al so be set to VTR position).

•Servo tracking is always LINEAR when Dual Rate is ON (regardless of LINEAR/VTR switch).

SUGGESTIONS

• VTR is useful when different throw rates are

desired for different portions of the same ma-

neuver or when there may be insufficient time between maneuvers for changing rate switches manually such as in the FAI F3A or "Turn-

around" Pattern event.

•When preparing to test fly a new model, if you are unsure as to the amount of Aileron deflec-

ti o n needed, set up as follows.

LINEAR/VTR switch 3. on LINEAR Aileron D/R I at best estimate of desired throw for normal flying or deflection specified on aircraft p lans. Aileron D/R 2 less movement than D/R (1) D/R OFF set to provide somewhat more throw than specified. Set Ail. D/R Switch 14 to 1, position for

takeoff.

If aileron response is not comfortable, it can

easily be increased or decreased while airborne.

• Try this set-up for AMA Pattern: Aileron LINEAR/VTR Switch [3] LINEAR. Adjust D/R I to give 3 rolls in approxi-

mately 5 seconds.

Use ATV to adjust for a fast roll rate when D/R Switch 14 is OFF .

Adjust D/R 2 for slow roll (1 roll in 5

seconds).

Same as above except Aileron LINEAR/ VTR Switch [3] set to VT R position.

Fig.

set to

•USING

HIGH

Servo move-

ment by throttle lever

FS FUNCTION/HOLD FUNCTION

Fail Safe (FS) is a function which moves the servo

of each channel to a position preset (at the trans-

mitter) when an erroneous signal or continuous

strong noise is received for about 1 second or

longer. When the proper signal is lost or strong

interference received, the airborne system will operate in the HOLD mode for about 1 second before switching to the FS mode. When a normal signal is received again for about 1 second, FS is

released a ndnormal control resumes. The HOLD functionstops all servos selected (by button [47] at interference was received. When a normal signal is resumed, HOLD is released.

ATL

the position just before noise or

(ADJUSTABLE

SLOW

Servo movement by

throttle trim

lever. (30% of total travel)

Fig.

THROTTLE

The Throttle Trim Lever 19 affects the servo position only when t he throttle control stick is in the

LOW (IDLE) position. HIGH throttle position remains unchanged. Adjustment of the throttle linkage is therefore very convenient.

Use a servo horn that allows slightly more throw than needed.

Set the maximum opening at

using Memory ATV (Page 18).

Use Memory ATV to set the extreme LOW position to prevent servo binding when the throttle screw. With the engine running, use ATL Throttle Trim Lever 19 to set the optimum idle speed.

A combination of FS and HOLD functions can be selected on each channel at the modeler's discretion. FS, HOLD, and SERVO TEST functions are operated using three switches on the trimmer panel.

barrel closes

Fig.

LIMIT)

HIGH throttle

against

A. ATV/FS Buttons[46] and [4 7 ]

B. Channel Select Switch [48|

C. Function Select Switch [49 ]

Channel select switch

the

idle

stop

Fig.

Function select switch

•FS (FAIL SAFE) AND HOLD FUNCTIONS

HOW TO USE FS (FAIL SAFE) (THROTTLE CHANNEL AS AN EXAMPLE.)

Set Function Select Switch 49 to FS SELECT. Set transmitter and receiver power switches to ON and check servo movements. While switching the Channel Select Switch 48 from 1 to 8 in order, set the channel (s) to be used

with

FAIL

SAFE by

and those to be used with HOLD by pressing

Button 47 . (In this example, set CH3 to FS with Button 46.) Move the throttle lever to maximum slow position,

and

press

the transmitter back. CH3 is now set to LOW throttle for the FS function. After setting FS, turn the Channel Select Switch 48 and Function Select Switch

OFF. Test FS by turning the transmitter power switch to OFF. (In this example, all servos should move to neutral except the throttle servo which should move to the LOW position that was just set.)

FS/HOLD CAN BE CONFIRMED BY MONITOR LAMP.

• Function status can be confirmed by means of Monitor Lamp A . When Function Select Switch 49 is at FS SELECT: Lamp A ON = HOLD

• When Switch 49 is set to FS ALL, Lamp A is OFF.

• When Switch 49 is set to ATV and Button 46 or 47 is pressed. Lamp A, blinks.

pressing

Set

Button

the

Fail Safe for all channels selected can be set

with one touch by moving the sticks and

switches of all the channels to the desired positi o ns and pressing the FS Set Button 36 once.

(Switch 49 previously set to FS ALL.) FS settings are retained in the transmitter

memory circuit and transmitted automatically

every 60 seconds (Monitor Lamp A goes out

momentarily during data transmission.) There-

fore, resetting before each fl ig ht is unnecessary even though the receiver switch has been turned OFF.

After FS settings have been made, always set

Function Select Switch 49 to OFF to prevent erroneous settings. To clear all FS settings, set Switch 48 to Position

1, then

taneously.

Lamp A; OFF= FS

press

buttons

and

simul-

•BFS

•BFS which moves o nly the throttle servo to the same position as set for FS when there is only a small amount of power left in the receiver Nicd batteries. ( If no FS position is set, the throttle servo is moved to medium slow.)

•When BFS occurs, the throttle servo can be r eleased and throttle control regained for 36

seconds by lowering the throttle lever to IDLE.

• The throttle stick position at which throttle con-

trol is regained is programmable. This is known

as BFS Memory and is set as follows:

(BATTERY FAIL SAFE) AND BFS MEMORY

(Battery Fail

Safe)

is a warning

function

Set Function Select Switch 49 to BFS MEMO SET and set Channel Select Switch 48 to Pos. 3 (Throttle). Set the Throttle stick to the desired release point (between Slow and Medium Slow recommended) and press Buttons 46 and 47 simultaneously. BFS Memory is now set. Set Switches 48 and 49 to OFF.

Whenever BFS occurs in flight, lower the throt-

tle stick to regain control and immediately land

the aircraft.

•SERVO TEST FUNCTIONS

• The operation of the servos can be checked by setting the transmitter and receiver power

switches to ON.

•When switch 49 is switched to TEST-A, the servos move half-side first and then, come back

to neutral and repeat the other-half from chan-

nel 1 to channel 8. (Channel select switch (R)

48 to TEST-ALL position at this time.) The servos set by the channel select switch do not operate. (If set to 5, the landing gear servo does notoperate.)

•When switch 49 is switch to TEST-B, all the servos operate linearly over their full travel.

(Channel select switch R 48 in TEST-ALL position at this time.) Only the servos set at the channel select switch are operated.

• The servo test is started by pressing button [46]] and is stopped by pressing button 4 7.

Fig.

In this case, set switch [31] to the AUTO ACT position. Rudder dual rate is then automatically turned on and off with the throttle stick. Adjust the throttle stick rudder auto dual rate ON and OFF positions with trimmer [8]. VTR operation is the same as that for aileron dual rate and elevator dual rate. Used it as desired.

Fig.

•AIRCRAFT WITH VARIABLE PITCH PROP

ADVANTAGES OF VARIABLE PITCH PROPELLER

The variable pitch propeller offers such advantages as:

1. The desired speed and p u l l can be adjusted.

2. Speed matched to the engine is obtained.

3. Low noise.

4. Air braking effect by

zero pitch.

5. Idling is unnecessary.

Pitch control

servo

Linkage

Fig.

High pitch-

Low pitch

High pitch

Low pitch

Matching of the variable pitch propeller to the digital proportional RC set is essential. Improper use is extremely dangerous. Therefore, read this section carefully. Connect the

pitch

control

servo

channel

8. A variable

pitch

propeller

can

adequately controlled by

common servo. Handle the servo the same as any other servo.

Install the servo and linkage as specified by the manufacturer. (Note) This section explains how to use a

MK variable pitch propeller.

Set switch

[7]

to the ACT position. Turn trimmers[4] and

[5]

fully counterclockwise. Since trimmer 6 is adjusted after making a test flight, set it to about the center.

Switch II is the mixing ONOFF switch. When it is set to the OFF position, monitor lamp 22 B comes on. When

it is set to the ON position,

the lamp goes out. Set the switch to the ON position and check the pitch control

* The pitch is zero (minimum) when the throttle

lever is set to minimum slow.

* The pitch becomes 11 (maximum) when the

throttle lever is raised one stop.

Next, adjust the transmitter upper side pitch con-

trol HIGH

side

trim

lever 8 throw.

Set

the throttle lever to the HIGH side before making this adjustment. Since lever 8 should be l inked with pitch 11 (maximum) the propeller pitch when this

lever is set to the lowest position must be checked. A variable pitch propeller is difficult to measure with a pitch gauge. Therefore, adjust trimmer [ 6] for a pitch somewhat lower than the maximum pitch 11 .

(channel 8) servo stroke and direction. Set the servo so the propeller is pitched when

HIGH

the throttle stick is set to HIGH and is zero pitch when

Fig.

the throttle stick is set to LOW. If the servo turns in the wrong direction, reverse the setting of servo reversing

switch 57 .

Fig.

Next, adjust the servo stroke. First set the transmitter pitch control lever 8 to the HIGH position. Then adjust the pitch control servo stroke with the ATV trimmers 48 and 49 so a load is not applied to the linkage. Set th e mixing throttle position is 1 stop from the SLOW position (Fig. 52)

Pitch 11 (maximum) at one stop

with the THROT POSIT trimmer [8], and check

if:

Pitch 0 (minimum) in slow

Pitch 11 (maximum)

Pitch control high side trimmer

Pitch 8-9

Pitch zero does not have an air braking affect. If the engine is running at a speed of 3000 ~ 4000 rpm, the air braking effect will not appear if the propeller diameter is too small. Adjust the throttle so the pitch is positive and the engine idles when switch II is set to the OFF position. Since lever 8 is also operative in this state, optimum pitch adjustment is possible.

Idle up lever

NOTE: When lowering lever 8 , be careful that the pitch does not go negative. This is adjusted during flight.

Operation when switch

Forexample, fli ght is affected by the temperature, air pressure, wind, and other conditions. Use this

lever adjusting the speed, pull, etc. to your liking. Also select the engine tone quality by adjusting the propeller pitch. Make quiet flights by fine adjusting th epropeller pitch.

Next, adjust the throttle. First, set switch II to the OFF position. Adjust the engine idling speed to 2,200~2,500 rpm with the throttle trim lever

19 . Then set switch II to the ON position and set the throttle lever to the maximum slow (zero pitch) position. Adjust idle up lever 9 for an engine speed of 3000 ~ 4000 rpm. Lever 9 is inoperative when switch II is in the OFF position. Use the variable pitch propeller as an air

NOTES:

• The pitch always becomes maximum when the throttle switch is set to HIGH.

•The

speed

lever 9 when the propeller pitch is zero.

• Since t he a ir braking effect is higher t han normal when landing at zero propeller pitch, be careful until you become familiar wi th t he setting.

• Best result is often obtained by making the tuned pipe longer.

brake during dives.

VARIABLE PITCH PROPELLER AND ENGINE POW ER MATCHING IS ESSENTIAL FOR MAXIMUM PERFORMANCE

the throttle stick is operated quickly during flight, the engine will make an abnormal sound (sputter). If the engine sound remains unnatural,

the pitch control or throttle servo operation tim-

ing can be d el ayed.

When the t hr ottle lever is suddenly moved from a

high speed to a low speed, the throttle operates before the propeller pitch changes to zero. If the

throttle lever is moved from HIGH to SLOW, the

pitchwill change before the throttle operates.

Set the throttle delay time with trimmer [4] and the pitch delay time with trimmer [5] . This provides the same fe e li ng as fixed propeller ai rc ra ft andallows natural flight.

cannot

increased

Fig.

with

the idle up

•THROTTLE POSITION TRIMMER

Throttle stick

Throttle -> pitch control

mixing

This is the start position setting

trimmer when M rudder auto dual and N air brake are used.

• (B) Throttle -> pitch control mixing The pitch control servo mixing point can be set to an arbitrary point between throttle lever 3 maximum slow and medium slow. When the throttle lever is moved from SLOW to HIGH, the mixing function is turned on. When the throttle lever is moved from HIGH to SLOW, the mixing function is turned off.

The start point can be set to the point at which

maximum engine torque and propeller air braking affect is displayed. (Normally, set it to within a range of one or two stops from the slowest position.)

• M Rudder auto dual rate Rudder dual rate can be automatically turned on

and off from any point between the throttle

lever 3 maximum slow and medium slow posi-

tions. (When M switch is in the ON position.) When the throttle lever is moved from SLOW to

HIGH, rudder dual rate is turned ON. When the

throttle lever is moved from HIGH to SLOW, rudder dual rate is turned off. Rudder dual rate trimmer 21 set the deflection angle when rudder dual rate is on.

• (N)

Air brake Air brake (flap, spoiler -> elevator, throttle -> flap, spoiler -> elevator) mixing can be set to any point between the throttle lever 3 maximum

slow and medium slow positions. When the

throttle lever is moved from SLOW to HIGH, mixing is turned off. When t he throttle lever is moved from HIGH to SLOW, mixing is turned

on.

•AIRCRAFT WITH FLAPS

Connect the flap servo to channel 6 of the receiver.

• Flaps are normally controlled by the CH6 Knob 6 on the transmitter front. Wide or narrow

(Flap Trim) travel may be selected by Flap Switch 18 on the trimmer panel.

' Wide throw is often best fo r normal landing flaps

and airbrake operations.

Narrow (Trim) throw allows Flaps or Flprons (see page 31 ) to be used fo r pitch trim adjust-

ments in knife edge and vertical maneuvers.

Narrow throw may also may also be best for Elevator -> Flap (2 -> 6) mixing.

•ELEVATOR/FLAP MIXING

ELEVATOR -> FLAP MIXING

• Switch 10 : ACT

• Switch 18 : TRIM

Fig. 58

FLIGHT ADJUSTMENT

• Elevator -> Flap (2 -> 6) mixing is unidirectional with elevator (CH2) acting as the Master chan-

nel. This function can be helpful in looping, square cornered, and circular acrobatic maneuvers. Set up the function as foll ows:

Set Safety Switch 10 to ACT and Flap Switch

18 toTRIM.

Set Control Switch 12 to ON and adjust Trim-

mer [9] to give DOWN flaps with UP elevator

stick movement.

Initially, set deflection angles so that the flap down angle is approximately the same elevator up angle. Transmitter Control Switch 12 is used t o turn this function ON and OFF in flight as desired.

the

Make a test flight with Switch 12 OFF and

adjust the Elevator trim and deflection to suit.

Fig.

•FLAP/ELEVATOR

FLAP -> ELEVATOR MIXING (ELEVATOR DOWN MIXING) ADJUSTMENT

•This

is a pre-set ing and is ideal for landing approaches with stunt and scale aircraft. An airbrake effect is produced which is very realistic and makes short field landings easier.

Fig.

switch-activated

Flaps 45 ~60

MIXING

type

of mix-

Turn Switch 12 ON and test control response.

If the response is not correct, turn switch 12 OFF, land and ad j u s t flap deflection with Trimmer

. Most common maneuvers can be performed with the mixing function ON. Rolls and spins may be better without the mixing depending on the aircraft. Mixing is generally not recommended for landing.

(PRE-SET FLAPS

Set Airbrake Switch 32 (6, 7 -> 2 MIX) to ON. Monitor Lamp (C) comes ON. Control Switch

10 can be used to turn the function ON and

OFF

in flight. When Switch 10 is ON, Lamp

C Blinks. Turn Switch 10 ON and set Flap Knob 6 to Zero. Lower the flaps 45 to 60 degrees using

Trimmer 20 and set the Elevators about 3 degrees down using Trimmer 19 . NOTE: These settings are estimates and will vary depending on elevator and flap areas, etc. Set Switch 10 to OFF for takeoff. When at a safe altitude, reduce the throttle to medium slow and after the aircraft has slowed somewhat, turn Switch 10 to ON. The aircraft should maintain level flight. If the aircraft climbs or dives, set Switch 10 to OFF, land, and readjust the elevator angle as necessary with Trimmer 19 . Remember, do NOT try to adjust back panel trimmers while in Flight. Make adjustments in small steps. Flap Neutral position can be changed in flight using the Flap Knob 6 . This applies whether mixing in ON or OFF.

AND

ELEV.

TRIM)

•AIRCRAFT WITH FLAPS AND SPOILERS(AIRBRAKE)

Connect the Flap servo to CH6 and the Spoiler servo to CH7 on the Receiver. Set Switch [32] to

ON.

Fig.

Set Control Switch 10 to ON and adjust the

flaps as shown in Fig. 62 with Trimmer 20. Adjust the spoiler servo travel with Memory

ATV Trimmers [46] and [47]. (See Page 17) When used in this manner, flaps and spoilers will be deployed simultaneously to the pre-set

positions when Switch 10 is set to ON. This acts as an airbrake. NOTE: In this mode, the Spoiler Knob 7 will be inoperative and its function transfered to Switch 10 . Alternative-

ly, Switch 32 can be set to CH7 OFF and Knob

7 used for spoiler control.

Elevator Trimmer 19 can be adjusted if necessary so that the aircraft maintains level flight with the airbrake deployed.

•FLAP TRIM FUNCTION

FLAP TRIM

Knob 6 throw selector. In the

NORM position, wide throw is selected and in the TRIM position, narrow throw is selected.

Flap Neutral can be adjusted during flight using the CH6 Flap Knob 6 .

•This is helpful in making

pitch axis trim adjustments for knife

edge and vertical maneuvers.

•This

function Mixing Switches 10 and 12 are ON or

OFF.

AUTOMATIC AIR BRAKING (THROTTLE STICK OPERATION)

•This

feature

the airbrake (flaps and elevator or flaps, spoilers, and elevator) as the throttle stick is lowered.

can

permits

SLOW

used

whether

automatic

deployment

Fig.

• Flap Switch 18 on the trimmer panel can be set to TRIM position to provide a finer adjustment

if desired. (This may not be possible however, if wider angles are needed for other flap functions.)

When the throttle is again moved to HIGH, the

airbrakes are retracted automatically. Operation in this manner is v ery efficient as it allows the use of the airbrake function while leaving the pilot

free

trols.

Set Switch [32] to INHIB and Switch [33] to ACT. Monitor Lamp B comes on. Set Control Switch 1 1 to ON. Lamp B blinks. Trimmer 8 is used to set the throttle stick position at which the airbrake is deployed. Deployment at one or two stops from the maximum Slow position is usually th e most suitable. The Auto Airbrake function can be turned ON and OF F in flight by using Control Switch II .

• The Automatic Air Bra ke Function is very useful for slowing the aircraft during maneuvers and landing approaches. When executing a "go around" fo r a missed approach, the airbrake will be immediately released as the throttle is moved to HIGH.

concentrate

on the

primary

con-

•SNAP ROLL SWITCH (TIMER IS OPTIONAL)

•When this function is used, snap rolls can be performed by pushing the Snap Switch 13 . Snap roll directions can be set using Control Switches

and

. Set Safety Switch 29 on the trimmer panel to ACT. Monitor Lamp D will blink. A snap roll in the direction set by switches 34

and 35 can now be performed by pushing Control Switch 13 to ON. The aircraft will continue to roll as long as the switch is held ON

unless the optional timer function is installed.

The optional timer function can be used to automatically stop the snap roll. Trimmers (25), [26), [27], and [28] can be used to set the time in each direction. The time can be varied from 0.2 to 2 seconds.

NOTE: The Snap Switch 13 is positioned so

that it is easy to reach. When the snap roll function is activated, you must use great care not to push the switch inadvertently. When the snap roll function is not desired, always set Safety Switch [291 to INHIB.

SNAP ROLL TIMER (OPTION)

These ar e the s nap roll time setting trimmers and snap roll function safety switches.

Right up snap roll time setting trimmer for button 34 . The snap roll time is settable fr om 0.2 t o 2 seconds.

Right down snap roll time setting trimmer for button

35 . The snap roll time is set-

table from 0.2 to 2 seconds.

Left up snap roll time setting trimmer for button 36 . The snap roll time is settable from

0.2 to 2 seconds.

Left down snap roll time setting trimmer for button 37. The snap roll time is settable from 0.2 to 2 seconds. Snap roll function safety switch.

•PROGRAMMABLE MIXING AND EXAMPLES

• Programmable mixing of any two channels desired is possible using the mix ing board on the trimmer panel. Programmable mixing is NOT a memory function and all programmed mixing is of the unidirectional type.

• The Master and Slave channels can be designated using Jumper Connectors 13 and 14 . The mixing amount in each direction of servo movement is adjustable using Trimmers 11 and 12.

•When Programmed Mixing is not in use. Connectors 13 and 14 should be placed in the INHIB position as shown in Fig. 68.

•When Function Select Switch 30 is set to P. MIX, programmed mixing can be switched ON and OFF in flight using Control Switch 16 .

When Switch 30 is set to RUDD D/R, program-

med mixing will remain ON if activated using

Connectors 13 and 14, and Control Switch 16;

Fig.

can be used to turn the Rudder Dual Rate function ON and OFF.

EXAMPLE 1. Fig. 69. AILERON -> RUDDER MIXING

• This function is sometimes referred to as"CAR" (Coupled Ailerons and Rudder) and is useful on sailplanes and certain scale models where aileron and rudder must be used together f or coordinated turns.

Connector 4 designates the Master channel and is set vertically at the CH1 (Aileron) position.

Fig. 69

EXAMPLE 2. Fig. 70.

•Programmed Mixing can be used to correct an

unwanted UP or DOWN pitch movement of the aircraft when Rudder is during knife edge and rolling maneuvers.

Set the Mixing Board as shown in Fig. 70 to provide mixing from Rudder -> Elevator. Use Trimmers 11 and 12 to adjust the desired amo unt and direction of Elevator compensation when Rudder is applied in both Left and Right directions.

Connector13designates the Slave channel

is set vertically a t the CH4 (Rudder) position. Set Switch the mix function ON and OFF in flight. Otherwise, it will remain ON and Control Switch 16 is available for ON/OFF Switch. NOTE: If Switch OFF Switch, Rudder Dual Rate cannot be switched manually, but Auto Dual Rate Rudder ca nstill be used. Use Trimmers 11 and 12 to set the amount and direction of desired Rudder movement when the Aileron stick is deflected.

30 to P. M IX

use as the Rudder Dual Rate

if it is desired to

is used as the P. MIX ON/

Fig.

and

turn

EXAMPLES. Fig.71.

•

Certain

dihedral or stunt aircraft with incorrect dihedral may exhibit an unwanted rolling tendency when Rudder is applied (as opposed to a pure Yaw

motion). This can cause variations in the roll rate during during point rolls and knife edge maneuvers. This can be corrected with Programmed Mixing.

Fig.

EXAMPLE 4.

•A n unwanted Left or Right Yaw tendency during pull ups can be adjusted by setting the mixing panel for Elevator to Rudder mixing (Elevator CH2 is the Master channel).

aircraft

slow

Set the mixing panel as in Fig. 71 to provide mixing from Rudder to Aileron. Trimmers 11 and 12 can be adjusted so that a small amount of corrective Aileron is automatically applied with Rudder movement. Both

directions of Rudder movement can be adjusted

for.

such

rolls

and/or a "roll

scale

models

out"

with

large

tendency

•MUTUAL(BI-DIRECTIONAL) MIXING (FLPRON, ELEVN, V-TAIL, DIFF)

Aileron + flap (FLPRON), aileron + elevator (ELEVN), rudder + elevator (V.TAIL), and aileron differential (DIF) mixing can be selected with a switch.

FLPRON (AILERON + FLAP)

•This

function

with full length "strip" ailerons.

•

Use

a separate servo on each aileron and connect as shown in Fig. 61 . NOTE: Always connect the servo on the Right Aileron to CH1 (Aileron). The Left servo to CH6 (Flap).

• Set Switches 16 and 17 as shown in Fig. 72.

• Aileron differential can be varied to suit using Trimmer 15 . Trimmer 15 will vary the amount of DOWN travel available on each aileron. UP movement is not affected.

allows

the

use

flapson aircraft

•The

Flap

function

Flap Knob 6 or better by using Switch 10 to

activate the Fla ps and Elevator trim if necessary

(See Flap -> Elevator Down mi x i n g Page 30).

• Elevator -> Flap mixing is possible by setting trimmer panel Switch 10 to ACT and Control Switch 12 to ON. (See Elevator -> Flap mixing Page 30)

• Pitch trim in vertical maneuvers and point manuvers can be adjusted easily by using the Flap Knob 6 .

• NOTE: When the ailerons are operated while in the Flap DOWN mode, an additional downward movement of the Aileron occurs. Wing tip stall can occur easily if the Aileron is down too far.

prevent this, it may be necessary to use the

aileron differential (Trimmer 15) to reduce the

downward travel.

can be operated by

using

the

Fig. 72

Fig. 7 3

Fig. 74

* Always connect the servo at the right wing to

receiver channel 1 ( a i le r on).

ELEVN (AILERON + ELEVATOR)

•

This type of mixing

delta wing aircraft and flying discs.

• Install and connect the servos as shown in Fig.

75. Always connect the Right side servo to CH1 (Aileron).

• Aileron differential can be adjusted with Trimmer

15.

can

used

with

tailless

and

Connect to channel 2

(elevator).

V.TAIL (ELEVATOR + RUDDER)

•This

mixing

Bonanzas, and other V-Tail aircraft.

• Install and connect the servos as shown in Fig.

78. Al way s connect the servo to the Right Rud-

dervator to CH2 (Elevator).

• Set Switches 16 and 17 as shown in Fig. 79.

used

for

gliders,

-Connect to channel 1 (aileron).

Pig.

scale

model

Use channel 1 (aileron servo) at the right rudder.

Fig.

Connect to channel 4 (rudder)

* When connecting the linkage, connect channel 2

(aileron servo) to theright wing rudder.

Connect to channel 2 (elevator).

Fig.

Fig. 79

Used channel 2 (elevator) for the right rudder.

Fig.

Futaba 8SGAP User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual