FUTABA FP-G134 User manual

The FP G154/G134 is a single axis rate gyro designed to stabilize aircraft. Like full size aircraft,
stabilisation isaccomplished by detecting angular accelerationwith the rate gyro. Detected
motion informationisfed to the control amplifier, which then sends a counteraction signal to the
appropriate control surface.
FEATURES OFFPG154/G134
•The FPG 154is for Futaba J M,F and SG Series
(1520usneutral) digital proportional radio con-
trolsets.
•The FP.G134 isfor Futaba E,F.G,H andL Series
(1310 usneutral) digitalproportional radiocon-
trol sets.
•The gyrobodyandcontrolampare small,making
mounting very easy.
•The gyrosensitivitycan be easily adjusted with
the gyrooutput trimmer at the controlamp.
•Directionofcorrectingmix can be switchedat the
control amplifier (internal reverse amp switch).
•A very sensitivemagnetic motionsensor with
excellentvoltage characteristics,linearsensitivity,
highspeed response is used. This resultsinsupe-
riorneutral characteristics.Such characteristics
make it ideal for usewiththerudder channel of a
modelhelicopter or inthe aileron/elevatorchan-
nelofa model aircraft.
•Large2mm diameter gyro motorshaftfor long
lifeandstrength.
•Thegyro motor onlycanbeturnedonandoff by
gyro powerswitch.

RATINGS
Power supplyvoltage
Current drain
Dimensionsandweight
4.8V shared with rece
Motor: 100mA,Amplifier:20mA (at4.8V)
Gyrobody: 1.57x 1.65x 1.60in.(42 x 34 x 39mm)
Control amplifier: 1.06x 1.89x .63in.(27 x 48 x 16mm)
Gross weight: 3.6oz.
iver
(102g)
CONNECTIONS
Connectto receiverchannel
10bestabilized
(rudderchannelfor
helicopter)
Gyro direction
reverseswitch
(B) Connector
G134
White
(B) Connector
G154
Connect10theservo
(rudderservo for helicopter)
(A) Connector
G134
Black
(A)Connector
G154
Controlamplifier
Gyro outputtrimmer
Byusingthegyro output trimmer
you mayadjustthesensitivity
between0%and100%.
Gyro powerswitch
Gyrobody

RATE GYRO INSTALLATION
NOTE:Besuregyroismounted as shown; for stabilization of the correct axis.
Helicopter • For rudder use
Connectconnactor(A)to thereceiverrud-
derchannelandconnector[B] to therudder
servo.
Aircraft - For aileron use
Connectconnector(A)tothereceiveraileron
channelandconnectorIB) to theaileron
servo.
Aircraft - For elevator (pitch shaft) use
Connectconnector(A) to thereceiverel-
evator channelandconnector(B) to theel-
evatorservo.
-When the gyro is mounted 180 out of phase,the direction of the correctingmix will be reversed. Tocorrect
this situation, switch the internal reverse amp switch to "REV". After mounting the gyro to the fuselage,
recheck its direction of operation,
INSTALLINGTHEGYROBODY
•The best mounting position isat thecenterof
gravityof the aircraft; however, itmayalso be
installeda shortdistance away from thecenter
ofgravity.
• Install the gyro where there is little engine vibra-
tion.
• Attach the gyro to the fuselage with double-side
adhesive tape.
UKdoublesidedadhesive
tape
(Clean the mountingsur
face andstick thegyro to
thewithsoftdouble-side
adhesive tape.
Use softdouble-side
adhesive tapeabout3mm
thick and10mmwide.
CONTROL AMPLIFIER INSTALLATION
•Install the control ampwhere there islittle engine
vibration, etc.
•Attachthecontrol ampwith double-side adhesive
tape.
Us*soft double-sideadhesivetapeabout3mmthick
and10mmwide.
Double-sideadhesivetape
Attachwithsoftdouble-side
adhesivetape.

EXAMPLE OF GYROADJUSTMENT
WHEN MOUNTED INA MODEL
HELICOPTER.
•Set thegyrooutput trimmer to graduation 7 using
asmall flatblade screwdriver.
•Adjust the output trimmersothat tail(rudder)
hunting does not occur when hovering with heli-
copter fuselage facingthe wind andwhenturning
andflyingstraightahead.
•Ifhunting does occur then lower the sensitivity by
reducing the gyrooutput trimmer. When you
sense that gyro sensitivityis low thenincrease
gyro output trimmer to desired sensitivity.
POWER SUPPLY
•The G154/G134 Rate Gyro uses the same power
supply as the receiver andservos.
•Whenthe receiver andgyro use a common power
supply, rudder/servopower consumptionand the
power consumed by the gyro,increasesthe total
power consumption. This decreasesthe number of
permissible flights.The useof a high capacity
(4.8/1,000mA) Nicad batteryis recommended
(The Futaba NR-4LB(4.8V/1,000mA) Nicadbat-
tery pack can be purchased separately.)
Low when hunting occurs
Gyro
outputincreases
Controlamp.
•Do notexpose therategyro to shockandvibra-
tion
•Do notdisassemble ormodify therate gyro
Whentheimideofthegyro mustbeinspected,remove
thethreescrewson the side of thecaseandremovethe
cover. Do not loosen the screws on the bottom of the
case.
•When the gyro output trimmer is set to zero, the
gyrosensitivitybecomes zero.
•When the gyropower switchis set to OFF,only
the gyromotor isturnedoff.Atthistime, since
the controlamp operatesandthe connected
servosmay beoperatedby fuselage vibration.
When flying,always setthe gyropower switch to
ON.
•Whena gyrooutput switchingfunction isrequir-
ed, such as incompetition, etc.,purchase the
G153/G133or G153BB/G133BB fromyour
localFutabadealer.
When requestingrepair after longuse,accident,or
ifany othertroublehasoccurred, describethe
problem inas muchdetail aspossible.Thiswill
allowusto isolatethetroublepointquicklyand
reducetherepairtime.