The FP-G132/G152 is a single axis rate gyro designed to
stabilize aircrafts. Like
full
size
aircrafts, stabilisation
is
accomplished by detecting angular acceleration with the rate
gyro. Detected motion information is fed to the control
amplifier, which then sends a counteraction signal to the
appropriate control surface.
•The
FP-G152
is
for Futaba
J,
M,
and
SG
Series
(1520
us,
neutral) digital proportional radio control sets.
•The
FP-G132
is
for
Futaba E, F, G,
H,
and L Series
digital
proportional radio control sets.
•Voltage regulated gyro motor supply maintains constant
motor speed and allows consistent gyro performance. The
voltage regulator is effective only when used with an external 6V. (five cell Nicad battery).
•Direction of correcting mix can be switched at the control
amplifier (internal reverse amp switch).
•Centering of the channel being stabilized can be adjusted
by a neutral trimmer built into the control amplifier.
•A very sensitive magnetic motion sensor with excellent
voltage characteristics, linear sensitivity, high speed
response is used. This results in superior neutral characteristics. Such characteristics make it ideal for use in the
rudder channel of a model helicopter or in the aileron/
elevator channel of a model aircraft.
•Large 2mm diameter gyro motor shaft for long life and
strength.
•The gyro can be bypassed without affecting normal operation
by
turning
the
gyro power switch
"off".
•Mount
the gyro
with
grommets and
screws
or
use
two-
sided foam tape.
• Gyro
output ("sensitivity")
can
be
switched
to
one
of
two
preset outputs at the transmitter (use the retract switch if
possible, or any avail, channels).
RATEINGS
Power supply voltage
Current drain
Dimensions and weight
4.8V shared with receiver (6V for external supply)
Motor: 100mA, Amplifier: 20mA (at 4.8V)
Gyro body: 1.57 x 1.65x 1.69 in. (40x42 x 43mm) - 2.86 oz. (80g)
Control amplifier: 1.73 x 2.28 x .63 in.(44 x 58 x 16mm) - 1.61 oz.(45g)
Control box: .94 x 1.34x .59 in.(24x 34 x 15mm) - .54oz.(15g)
CONNECTIONS
The
case
can be
opened
by removing
these
screws.
Connect to receiver
retract or auxiliary channel
(for gyro sensitivity switching)
Connected servo (rudder servo for helicopter)
neutral trimmer (this trimmer is operative even
when the control box power switch is off).
Gyro body
(B) Connector
G132
White
Gyro direction
reverse switch
(B) Connector
(A) Connector
G132
Black
Contra; amplifier
Gyro output trimmer
(0 Connector
(A) Connector
Connect to receiver channel
to be stabilized
(rudder channel for helicopter)
Special 6V five cell Nicad battery
pack connector for motor regulated power supply. (Insert the
jumper connector when a shared
power supply is used.)
Connect to the servo (rudder servo for helicopter)
The G152 and G132 are interchangeable by
changing the connectors and readjusting the
neutral trimmer.
(D) Connector
G132
Black
(D) Connector
(C) Connector
G132
Jumper connector
Control
box
Gyro power switch
RATE GYRO INSTALLATION
NOTE: Be sure gyro is mounted as shown; for stabilization of the correct axis.
Helicopter - For
rudder
use
Connect connector (A) to the receiver rudder channel and connector (D) to the rudder
servo.
Aircraft - For aileron use
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 elevator channel and connector (D) to the elevator servo. will be reversed.
•When the gyro is mounted 180° out of phase, the
direction of the correcting mix
To correct this situation,
switch the internal reverse
amp switch to "REV".
After mounting the gyro
to the fuselage, recheck
its direction of operation.
INSTALLING THE GYRO BODY
•The
best
mounting
position
is
at
the center
of
gravity
of
the aircraft; however, it may also be installed a short distance away from the center of gravity.
•Install the gyro where there is little engine vibration.
•The
gyro can
be
installed
with
dampers, grommets, screws,
or with double-side tape.
Double-side tape (clean the
surfaces, then attach the
double-side tape)
Flat washer
Rubber
Bushing
Grommet
Flat washer
Nut
Use 2.3 - 2.6mm diameter nuts
INSTALLING THE CONTROL BOX
Using the
control
box
nameplate
as a template,
drill
four
holes and cut an opening for the slide power switch. Mount
the control box on the fuselage, away from engine exhaust
and where there is minimal vibration.
Pan head tapping screw(2)
2x8
Switch box nameplate
Switch box (top)
Switch box (bottom)
•Wrap the control amplifier in sponge, to prevent vibration
problems.
OUTPUT ADJUSTMENT
•When using the switchable gyro output sensitivity feature,
connect connector (B) to the retract channel if possible.
However, a proportional channel can be used. The output
sensitivity switching point will then be at the center or
neutral area.
•When the transmitter landing gear switch is pulled forward (or down), the output sensitivity can be adjusted
from 0 to 100% with trimmer (1).
*When the transmitter landing gear switch is pushed
back
(or up), the output sensitivity can be adjusted
from 0 to
100%
with
trimmer
(2).
In
this
case,
trimmers (1) and (2) do not interfere with each other, and
can be adjusted independently.
•When the output is fixed or there is no spare channel (as
with 4 channel set), do not connect connector (B). In this
case, adjust the output with control box trimmers (1) and
(2). (Insulate the terminals with vinyl tape so they cannot
be touched.)
*When trimmer (1) is 0, the output can be adjusted
from 0 to 50% with trimmer (2).
*When trimmer (1) is 100%, the output can be adjusted
from 50 to 100% with trimmer (2).
POWER SUPPLY
•When using the rate gyro with a separate power supply
(utilizing the motor voltage regulator), connect the five
cell Nicad battery pack (6V) to connector (C). Thereby,
maintaining constant motor speed and consistent gyro
performance. A four cell Nicad (4.8V) battery pack cannot be connected to connector (C).
•Whenever a four cell Nicad battery pack (4.8V) is used, it
must be as a common power supply for the receiver and
gyro. Connect the accessory jumper connector to con-
nector (C), when using a 4.8 volt power supply.
•When the receiver and gyro use a common power supply,
rudder/servo power consumption and the power consumed by the gyro, increases the total power consumption.
This decreases the number of permissible flights. The use
of a high capacity (4.8/1,000mA) Nicad battery is recommended. (The Futaba NR-41 (4.8V/1000mA) Nicad battery pack can be purchased separately.)
(C) connector
Jumper connector
Connect the following to the (C) connector (control amplifier BATT):
* Five cell Nicad battery pack (6V)
* Jumper connector, when the gyro and receiver use a com-
mon power supply
(C) connector
Jumper connector
G132
BATT
BATT
EXAMPLE
Adjustment when installed in a helicopter:
When using the switchable output sensitivity:
Set trimmer (1) to about the 70% of maximum output sensitivity position (100% is full clockwise) as a starting point.
Hover
with
the wind and
readjust
trimmer
(1)
so
that
"tail
hunting" does not occur. However, do not reduce output
sensitivity to a point where the nose will turn upwind when
"lifting off".
Set trimmer (2) to about the 40% position when a large
rudder travel is unnecessary, such as 540° stall turns, etc.
Approx.40%
Approx.
70%
Control box
•Do not expose the rate gyro to shock and vibration
•Do not disassemble or modify the rate gyro
When the inside of the gyro must be inspected, remove
the three screws at the top of the case and remove the
cover. Do not loosen the screws on the bottom of the
case. If these screws are loosened, the neutral position
may change at sensitivity or polarity switching.
When requesting repair after long use, accident, or
if any other trouble has occurred, describe the
problem in as much detail as possible. This will
allow us to isolate the trouble point quickly and
reduce the repair time.
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