FUTABA FP-G132 User manual

The FP-G132/G152 isa singleaxisrate gyro designed to
stabilize aircrafts. Like full size aircrafts, stabilisation is ac-
complished bydetecting angular acceleration with the rate
gyro. Detected motion information isfed to thecontrol
amplifier, which then sends a counteraction signal tothe
appropriate control surface.
•The FP-G152 is forFutaba J, M, and SG Series (1520 us,
neutral)digitalproportionalradio control sets.
•The FP-G132 is for Futaba E,F, G, H, and L Series digital
proportional radio controlsets.
•Voltageregulated gyro motor supply maintains constant
motor speed and allowsconsistentgyroperformance.The
voltageregulatoriseffectiveonly when used with an ex-
ternal6V.(fivecellNicadbattery).
•Direction of correcting mix can beswitched at the control
amplifier (internal reverse amp switch).
•Centering of the channel being stabilized can beadjusted
bya neutral trimmer builtintothe control amplifier.
•A very sensitivemagnetic motion sensorwith excellent
voltagecharacteristics,linear sensitivity,high speed
response is used. Thisresultsinsuperior neutralchar-
acteristics.Such characteristicsmake it ideal for use inthe
rudder channelof a model helicopteror inthe aileron/
elevatorchannelof a model aircraft.
•Large 2mm diameter gyro motor shaft for longlife and
strength.
•The gyro can bebypassed without affectingnormal oper-
ation by turning the gyro power switch "off".
•Mount thegyro with grommets and screws or use two-
sided foam tape.
• Gyro output ("sensitivity") can be switched to one of two
preset outputs at thetransmitter(use the retract switch if
possible,or any avail,channels).

RATEINGS
Power supply voltage
Current drain
Dimensionsandweight
4.8V shared withreceiver(6V forexternalsupply)
Motor: 100mA, Amplifier:20mA (at4.8V)
Gyro body: 1.57 x 1.65x1.69in.(40x42x 43mm) - 2.86oz.(80g)
Control amplifier:1.73x 2.28 x .63in.(44 x 58 x 16mm) - 1.61oz.(45g)
Control box: .94x 1.34x.59in.(24x34x 15mm) - .54oz.(15g)
CONNECTIONS
The case canbe opened byremoving these screws.
Connecttoreceiver
retract or auxiliarychannel
(forgyrosensitivityswitching)
Connected servo (rudder servo for helicopter)
neutral trimmer (thistrimmer isoperative even
whenthe control box powerswitch isoff).
Gyro body
(B)Connector
G132
White
Gyro direction
reverse switch
(B) Connector
(A)Connector
G132
Black
Contra;amplifier
Gyro outputtrimmer
(0Connector
(A)Connector
Connect to receiver channel
to bestabilized
(rudderchannel forhelicopter)
Special6V five cellNicadbattery
packconnector formotor reg-
ulated power supply. (Insert the
jumper connector when a shared
powersupplyisused.)
Connectto the servo(rudderservofor helicopter)
TheG152 and G132 are interchangeable by
changing the connectors andreadjusting the
neutral trimmer.
(D) Connector
G132
Black
(D) Connector
(C)Connector
G132
Jumper connector
Control
box
Gyro powerswitch

RATE GYRO INSTALLATION
NOTE: Besuregyrois mounted as shown; for stabilization of the correct axis.
Helicopter - For rudder use
Connect connector(A)to the receiver rud-
der channel and connector(D)tothe rudder
servo.
Aircraft- Foraileronuse
Connect connector (A)to the receiver aileron
channel and connector (D) to the aileron
servo.
Aircraft - For elevator (pitch shaft) use
Connect connector (A) to the receiver el-
evator channel andconnector (D) to the el-
evator servo. will be reversed.
•Whenthegyrois mount-
ed 180°outofphase, the
direction of the correcting mix
To correctthissituation,
switchtheinternalreverse
amp switchto"REV".
Aftermounting thegyro
tothefuselage,recheck
itsdirectionofoperation.
INSTALLING THE GYRO BODY
•The best mounting position is at thecenter of gravity of
theaircraft;however,itmay alsobe installeda shortdis-
tanceawayfromthe center of gravity.
•Installthe gyrowherethereis littleenginevibration.
•The gyrocan be installed with dampers,grommets,screws,
or with double-side tape.
Double-side tape (cleanthe
surfaces,then attachthe
double-side tape)
Flat washer
Rubber
Bushing
Grommet
Flat washer
Nut
Use2.3- 2.6mmdiameter nuts
INSTALLINGTHECONTROLBOX
Using the control box nameplate as a template, drill four
holesand cut an openingfortheslidepower switch.Mount
the controlbox on the fuselage,away from engine exhaust
and where there is minimal vibration.
Pan head tappingscrew(2)
2x8
Switch boxnameplate
Switch box(top)
Switch box(bottom)
•Wrapthe controlamplifierinsponge,topreventvibration
problems.

OUTPUTADJUSTMENT
•When using the switchablegyro output sensitivityfeature,
connect connector(B)to the retractchannelif possible.
However,a proportionalchannelcan be used.The output
sensitivityswitchingpoint willthen beat thecenteror
neutralarea.
•Whenthe transmitterlanding gear switchis pulled for-
ward(or down),the output sensitivitycan be adjusted
from0 to 100% withtrimmer(1).
*Whenthe transmitterlandinggear switch is pushed
back (or up), the output sensitivitycan be adjusted
from 0 to 100% with trimmer (2). In this case, trim-
mers (1)and (2)do not interferewitheachother,and
can be adjustedindependently.
•When the output is fixedor thereis nosparechannel (as
with 4 channel set),donot connect connector(B).Inthis
case, adjusttheoutput with controlbox trimmers(1)and
(2).(Insulatethe terminalswithvinyltape so they cannot
betouched.)
*Whentrimmer(1)is 0,the output can beadjusted
from0 to 50% withtrimmer(2).
*Whentrimmer(1)is 100%,the output can beadjusted
from 50 to 100%withtrimmer (2).
POWERSUPPLY
•When using therategyrowith a separate power supply
(utilizingthe motor voltageregulator),connect the five
cellNicad batterypack (6V)to connector (C).Thereby,
maintainingconstantmotor speed and consistentgyro
performance.A fourcellNicad(4.8V)batterypackcan-
not beconnected to connector(C).
•Whenever a four cellNicad batterypack (4.8V)is used, it
must beas a common powersupply forthereceiverand
gyro.Connecttheaccessoryjumperconnectorto con-
nector(C),whenusinga 4.8 voltpower supply.
•When thereceiverand gyrouse a common power supply,
rudder/servopower consumption and the power con-
sumed bythe gyro,increasesthe totalpower consumption.
Thisdecreasesthenumber ofpermissibleflights.The use
of a high capacity(4.8/1,000mA)Nicadbatteryis recom-
mended. (The Futaba NR-41(4.8V/1000mA) Nicad bat-
terypack can be purchased separately.)
(C) connector
Jumperconnector
Connect the following tothe(C) connector(controlam-
plifier BATT):
*Five cellNicad batterypack (6V)
*Jumper connector, when the gyro andreceiver usea com-
monpower supply
(C) connector
Jumperconnector
G132
BATT
BATT
EXAMPLE
Adjustmentwhen installed inahelicopter:
When using the switchable output sensitivity:
Set trimmer(1)toabout the 70% of maximumoutput sen-
sitivityposition(100% is fullclockwise)as a startingpoint.
Hover with thewindand readjust trimmer (1) so that "tail
hunting" does not occur.However,do not reduce output
sensitivityto a point wherethe nose willturn upwind when
"liftingoff".
Set trimmer(2)to about the 40% position when a large
rudder travelis unnecessary,such as 540° stallturns, etc.
Approx.40%
Approx. 70%
Control box
•Do notexpose the rate gyro to shock andvibra-
tion
•Do notdisassemble or modify the rate gyro
When the inside of the gyromust beinspected, remove
the threescrewsatthetop of the case and remove the
cover.Do not loosen thescrewson the bottom of the
case.If thesescrewsareloosened, theneutralposition
maychange at sensitivityor polarity switching.
When requesting repair afterlong use, accident, or
ifany other trouble has occurred, describethe
problem inas much detailas possible.Thiswill
allowus to isolatethe trouble point quickly and
reduce the repair time.