G500T
Tail Lock / Rate Ring
Gyro Instructions
G500T
Tail Lock / Rate Ring
Gyro Instructions
For Helicopter Use
JRPG500T
• Compact integrated design for easy installation/connection
• No moving parts for a nearly unlimited service life
• New Silicone Ring Sensor for drift free operation and
outstanding holding power
• Tail Lock
™
and Rate modes
• Remote dual gain control
• Servo travel limiter for easy setup
• High/Standard Frame Rate selection
• Silver/chrome finish to isolate RF & dissipate heat
• Compatible with JR and other brand radio systems
SPECIFICATIONS
Operating Voltage:
4.8V only
Operating Current:
95mAh
Dimensions:
24.5H x 30.5W x 30.5L
Weight: 28
g
Gyro Gain:
Dual remote adjustable
Tail Lock/Rate Modes:
Remote/Selectable
Servo Travel Limiter:
Manual pot
INTRODUCTION
SETUP & ADJUSTMENT
JR's latest gyro, the G500T, utilizes a new state-of the-art
Silicone Ring Sensor for outstanding holding power and drift
free operation.
The G500T's compact one piece design provides easy
installation in a wide variety of models.
It is important to note that the operational features of the
G500T are very different than that of other gyro systems. Many
current settings, including the travel volume, exponential, dual
rates, and tail rotor revolution mixing values (Rate model only)
must all be changed from their previous normal settings in
order to achieve the desired tail rotor/response and maximum
performance that the G500T has to offer.
JR's new G500T features remotely selectable Rate and
Tail Lock™ mode options. Tail Lock mode is highly
recommended for use in helicopters as it will hold the tail of the
model in position without the need for Revolution mixing.
Note: The G500T should not be used in airplanes while in
the Tail Lock mode.
Carefully read these instructions so you will fully
understand and become comfortable with the functions and
operating characteristics of the G500T prior to installation and
initial test flights.
1
2
G500T Gyro
JR Standard or "Digital" servo
Rx AUX (White Connector)
Connect to AUX channel from which
you want the gain to be adjusted
Servo Lead:
Connect to SV Rudder
Connect to servo
Receiver
Reversing
Servo Standard/High
frame rate switch
Servo Travel Limit Adjustment
Rx Rudder Connection
FEATURES
Connecting the JR G500T Gyro to your radio systems is as easy
as 1-2-3:
Step 1: Connect the Male plug lead to the desired channel of
operation on the receiver (typically Rudder).
CHANNEL FUNCTION
Heli
Rudd = Rudder/Tail Rotor
Airplane
Rudd = Rudder
Aile = Aileron Control (airplane only)
Elev = Elevator Control (airplane only)
If the G500T is located away from the receiver, an optional
servo extension (purchased separately) may be used.
Step 2: Connect the desired servo to be used into the Female
connector lead.
Tip: It is suggested that you apply some scotch tape to the
joint to prevent possible disconnection during flight.
Step 3: Insert the AUX connector (white) to the channel
on the receiver from which you would like the gain control
to be activated.
™
INSTALLATION & HOOKUP
Refer to the following diagrams for proper positioning of
your G500T gyro.
The G500T should be mounted in the designated area as
specified by your Heli’s instruction manual.
Many helicopters provide mounting bases near the main
shaft. Use them only if they are positioned away from heat-
generating sources. If it is not possible to locate the sensor
near the main shaft, an alternate location to consider is on the
front radio bed/tray.
Mount the G500T with the label facing upward as shown
in the diagram.
CONNECTIONS
Please note that if the system is connected incorrectly, the
G500T will not function, but no damage will occur to any of the
radio components. After successful connection, secure the gyro
to the servo connection with a small piece of tape to prevent
possible disconnection during use.
Servo Selection
A servo with quick transit times and accurate centering
will allow the G500T gyro to perform to its full potential.
If servos with slow transit times are used (.15 sec. or
higher), the G500T may become too quick for the servo,
resulting in a "wag" or "hunting" situation which requires the
user to reduce the percentage of gain. This reduction in gain
will also reduce the holding power and, therefore, the
performance of the G500T.
JR
Futaba/HRC
Airtronics Z
red to red
red to red
red to red
brown to brown
brown to black
brown to black
orange to orange
orange to white
orange to white
Radio Type Polarity Connections
Rudder Servo Linkage Position
Remove unused servo horn arms to prevent obstruction. For
best performance, attach the tail control rod ball to the servo
arm at a distance of approximately 16–18mm from the center
mounting screw of the servo arm. The performance of the
G500T will be greatly reduced if the control linkage is
attached at a distance of less than 16mm, as this position will
not make full use of the G500T's sensing capabilities.
CONTROL BALL PLACEMENT
REV
SERVO
Hi NOR
LIMT
1
2
16–18mm
90
°
