Traxxas Satellite Radio TQ 3 User Manual

The Traxxas TQ-3 Radio System  
Your Revo is equipped with the TQ-3 radio system. The TQ-3 is a 3-channel system that provides up to a quarter mile range and control for up to three  
servo outputs. Revo is equipped with two high-torque steering servos connected via a “Y” plug adapter (one input, two equal outputs). The TQ-3 works  
in conjunction with the OptiDriveElectronic Shift Module to monitor and control the input and output signals for the throttle and shifting servos  
(channels). The OptiDrive monitors the voltage of the on-board RX Power Pack. The "Function" LED will flash red if the battery voltage is too low.  
The OptiDrive ESM is  
designed to adapt and  
work with aftermarket  
three channel radio  
TQ-3 Transmitter  
Revo Wiring Diagram  
systems (see page 15).  
Charging Jack  
(to charger)  
Throttle Neutral Adjust  
Antenna  
Steering Wheel  
Throttle Trim  
Steering Trim  
On/Off  
Switch  
RX Power Pack  
5-cell NiMH  
Battery  
Antenna  
Receiver  
Battery  
Reverse Shift  
Forward Shift  
Channel 1  
Channel 2  
Channel 3  
OptiDrive ESM  
(Electronic Shift  
Module)  
Steering Servos  
Throttle  
Trigger  
Shifting Servo  
(micro servo)  
.1  
CH  
.2  
CH  
.3  
CH  
Throttle Servo  
Servo Reversing  
Switch  
To Transmission  
(OptiDrive sensor)  
Power Switch  
Battery Compartment  
Power Indicator  
Revo 3.3  
9
The Traxxas TQ-3 Radio System  
Installing Transmitter Batteries  
Your TQ-3 transmitter uses 8 AA batteries. The battery compartment is  
located in the base of the transmitter.  
Use the Right Batteries  
Your transmitter uses AA  
batteries. Use new alkaline  
batteries, or rechargeable  
batteries such as NiCad or  
NiMH (Nickel Metal Hydride)  
batteries in your  
.1  
CH  
.2  
CH  
.3  
CH  
transmitter. Make sure  
rechargeable batteries are  
fully charged according to  
the manufacturer’s  
4. Turn on the transmitter and check the power indicator for a  
solid red light.  
instructions.  
If the power indicator light flashes, then the transmitter batteries are  
weak, discharged or possibly installed incorrectly. Replace with new or  
freshly charged batteries. The power indicator light does not indicate  
the charge level of the RX Power Pack installed in the model.  
If you use rechargeable  
batteries in your  
transmitter, be aware  
that when they begin  
to lose their charge, they  
lose power much more  
quickly than regular alkaline  
batteries.  
Caution: Discontinue  
running your Revo at the  
first sign of weak batteries  
(flashing red light) to avoid  
losing control.  
1. Remove the battery compartment door by pressing the tab and  
lifting the door up.  
2. Install the batteries in the correct orientation as indicated in the  
battery compartment.  
3. Reinstall the battery door and snap it closed.  
If the power indicator  
doesn’t light red, check the  
polarity of the batteries.  
Check rechargeable  
batteries for a full charge.  
Revo 3.3 11  
The Traxxas TQ-3 Radio System  
minutes of fast charging time. When the  
charger is not in use, wind the charging  
cord around the cord holder. To secure  
the cord, insert the end of it into the  
retaining slot on either end of the cord  
holder. The TRX Power Charger is designed  
to be conveniently mounted to a wall or  
other vertical surface using the supplied  
#8 x 1" wood screws.  
Charging the Receiver Batteries  
To prevent losing control of  
your model, it is important to  
stop at the first sign of weak  
receiver battery. Visible  
warning signals include  
sluggish steering response  
and shortened radio range.  
To power the radio system  
in the truck, your Revo is  
equipped with the RX  
Power Pack, a rechargeable  
5-cell nickel metal hydride  
(NiMH) battery pack. The RX  
Power Pack must be fully  
charged before running the  
truck. The supplied TRX  
Power Charger is a peak-  
detecting unit that will  
charge the supplied RX  
Power Pack in about one  
hour. The peak-detection  
Part #3032  
The TRX Power Charger can be powered by  
our optional DC car adapter (sold separately).  
It features a tangle-free, extra-long wire and  
integrated fuse. The long charging cord allows  
the model to remain outside the car while  
charging. Caution! Never charge batteries in an  
enclosed car interior or while driving. Never  
leave charging batteries unattended. Monitor  
them closely.  
In addition, the OptiDrive is  
equipped with a low-voltage  
indicator and a failsafe circuit.  
When the voltage of the  
receiver battery drops below  
4.3 volts, the “Function” LED  
on the OptiDrive will flash red.  
If the voltage drops below 4.3  
volts for more than 2 seconds,  
the OptiDrive ignores throttle  
and shift signals and applies  
25% brakes (failsafe mode).  
Steering will still be  
circuitry automatically shuts off the charger when the maximum charge  
has been achieved. Revo has a built in charging jack so you do not have  
to remove the battery pack from the model. The long charger cord  
allows easy handling of the truck while the battery is charging.  
Battery Care  
Some precautions should be taken to maintain the performance of the  
rechargeable NiMH receiver pack in your model. Improper use of the  
battery pack could result in personal injury or damage to your truck.  
1. The TRX Power Charger can operate on either AC or DC power*.  
An AC power supply is supplied with the charger. Plug the end of the  
AC power supply into the back of the charger.  
2. Plug the AC power supply into any 110-volt (U.S. models) wall outlet.  
The charger light should glow steady green (no battery connected).  
Only use approved chargers for NiMH battery packs (such as the Traxxas  
TRX Power Charger). Do not exceed the maximum charge rate of 1 amp.  
Do not short-circuit the battery pack. This may cause burns and severe  
damage to the battery pack  
Do not burn or puncture the batteries. Toxic materials could be released.  
If eye or skin contact occurs, flush with water.  
operational and the  
“Function” LED on the  
3. Plug the charger output cord into the charging jack located under the  
right front of the truck. The charging jack is  
protected by a rubber plug.  
OptiDrive will flash red. The  
OptiDrive will stay in failsafe  
mode until the power is  
turned off or the receiver  
battery voltage rises above  
4.3 volts for more than 2  
seconds. Anytime the  
“Function” LED flashes red, it  
is time to stop and recharge  
your battery pack . Do not try  
to continue running your  
model with weak receiver  
batteries on board.  
4. The green light on the charger should begin  
to flash quickly, indicating that fast charging  
is in progress.  
Store the battery pack in a dry location, away from heat sources  
and direct sunlight.  
Nickel Metal Hydride batteries must be recycled or disposed of properly.  
Do not completely discharge the RX Power Pack or you could damage  
it. Do not use dischargers on the pack. Store the battery with at  
least 25% charge. Stop running and recharge at the first indication  
of reduced voltage.  
After connecting a fully-drained battery to the charger it may take up to  
15 seconds for the charger to sense the battery and begin to charge. To  
start charging immediately, plug the battery pack into the charger and  
then plug the charger into the wall socket.  
5. When the light turns solid green (not  
flashing), the battery pack is fully charged  
and ready for use.  
6. Put the rubber plug back over the charging  
jack on the truck.  
After fast charging has completed, the TRX Power Charger continues to  
charge in trickle (slow) charge mode. It will continue until the battery is  
disconnected. The TRX Power Charger will automatically shut off after 90  
* With optional DC car adapter  
12 Revo 3.3  
The Traxxas TQ-3 Radio System  
Setting up the Antenna  
1. Locate the black antenna wire that exits the receiver cover. The  
receiver cover is mounted on the top of the chassis, near the front.  
The antenna wire exits the cover just ahead of the fuel tank.  
TRX Charger Specifications  
:
Antenna Tip  
Input voltage:  
10.6/16v (min/max)  
Fast charge current:  
750/1000mA (min/max)  
2. Pull the wire straight with your fingers and then insert the end of  
the wire into one end of the antenna tube. Push the wire all the  
way through the antenna tube.  
Slow (trickle) charge current:  
22/55mA (min/max)  
Delta Peak:  
10mv  
3. Insert the base of the tube into the molded post on the side of the  
radio box.  
Maximum charge time:  
90 minutes  
4. Place the antenna tip over the top of the tube to secure the  
antenna wire.  
5. On the transmitter, always fully extend the telescoping antenna  
when running your Revo. Make a habit of holding the transmitter  
so that the antenna points straight up.  
Spray a little window  
cleaner on the antenna  
wire to make it easier  
to push through the  
antenna tube.  
Antenna Tube  
Don’t shorten the length  
of the antenna wire. Its  
length is tuned to the  
frequency band; cutting it  
could severely shorten the  
radio system’s range.  
Don’t push the  
transmitter antenna down  
from the top. Pull it down  
from the bottom, one  
segment at a time, to  
prevent binding and  
kinking the antenna mast.  
Front of  
Truck  
Revo 3.3 13  
The Traxxas TQ-3 Radio System  
TQ-3 Radio System Controls  
TQ-3 Radio System Adjustments  
In addition to the electronic throttle and steering trim controls, your  
radio system features throttle neutral adjustment and servo reversing  
switches.  
Throttle Neutral Adjustment  
Steering  
The throttle neutral adjustment is located on the transmitter face and  
controls the forward/reverse travel of the throttle trigger. Change the  
adjustment by pressing the button and sliding it to the desired position.  
There are two settings available:  
50/50: Allows equal travel for both acceleration and braking.  
70/30: Allows more throttle travel (70%) and less  
brake travel (30%).  
Shift Reverse  
Brake  
Neutral  
50/50 is the required setting for Revo with the TRX 3.3 Racing Engine.  
Electronic Throttle Trim  
.1  
CH  
.2  
CH  
.3  
CH  
The electronic throttle trim located on the face of the transmitter adjusts  
the neutral (center) point of the throttle servo when the servo is at rest.  
This control has been preset for you at the factory. If necessary, adjust  
the control so that the carburetor is at idle, and the brakes are not  
applied (the model will roll freely). Do not use the throttle trim to raise  
or lower the engine idle speed. Make the idle speed adjustment on the  
carburetor.  
Accelerate  
Shift Forward  
Electronic Steering Trim  
The electronic steering trim located on the face of the transmitter  
adjusts the neutral (center) point of the steering servos when the servos  
are at rest. Adjust this control to make the model drive straight with no  
steering input at the wheel.  
14 Revo 3.3  
The Traxxas TQ-3 Radio System  
2. Set the TQ-3 Transmitter to its factory default shift settings:  
Set the THROTTLE NEUTRAL switch to the 50/50 setting.  
Servo Reversing Switches  
The servo reversing switches are located on the front of the transmitter,  
next to the on/off switch. Moving a switch reverses the direction of the  
corresponding servo. Each switch corresponds to a channel, as shown  
below. For example, if you turn the steering wheel to the right and your  
front wheels turn left, you would move the channel 1 switch to correct  
the servo direction. It may be necessary to adjust the corresponding trim  
control after  
Large adjustments to the  
throttle trim and/or throttle  
linkage may require re-setting  
the OptiDrive to maintain  
proper shifting action.  
Set the THROTTLE TRIM to the center “0” setting, then adjust the  
THROTTLE TRIM until the carburetor closes.  
Set the CHANNEL 2 SERVO REVERSING SWITCH to the right position.  
Set the CHANNEL 3 SERVO REVERSING SWITCH to the right position.  
DO NOT change the position of any of the servo reversing switches  
after programming the OptiDrive. If settings were changed after  
programming the OptiDrive, it will have to be reprogrammed.  
For transmission durability,  
the OptiDrive ESM limits the  
model’s reverse speed to about  
70% of full throttle. If settings  
are changed, and you notice a  
decrease in forward top speed,  
you could have the OptiDrive  
system reversed. Return the  
TQ-3 servo-reversing switches  
for channels two and three  
back to their default settings  
and re-program the OptiDrive  
Module. For programming with  
aftermarket radio systems,  
please see our website.  
moving a switch  
.
The default  
.1  
H
C
.
2
3. With the throttle at neutral, press and hold the  
SET button until the Function LED flashes green  
twice and then release the button immediately.  
You are now in programming mode.  
H
C
position for the  
servo reversing  
switches is  
.3  
H
C
shown.  
4. Pull the transmitter throttle  
trigger to the full throttle  
position. Hold it there until the  
Function LED flashes green  
three times. Note: The throttle  
servo will not move during programming even though it is connected  
to the controller.  
TQ-3 Channel to Servo Chart  
Channel  
Servo  
Steering  
1
2
3
Throttle and braking  
Shifting  
OptiDrive Operation  
Green Function”  
Shift allowed  
Programming the OptiDriveESM  
5. Release the transmitter throttle  
trigger allowing it to return to  
neutral. The Function LED will  
turn solid green, indicating that  
the shifting servo is OK to shift  
The OptiDrive ESM electronically monitors  
vehicle speed and controls forward and reverse  
shifting. Controlling the shift action electronically  
rather than by mechanical systems reduces the  
number of components in the transmission. The  
transmission weighs less, there is lower  
Red flashing Function”  
Low battery, see pg. 12  
Red Sensor”  
a) Sensor, throttle or shift  
circuit is broken. Possible  
and the programming has been completed. The controller is now  
programmed and ready to go!  
disconnected or broken sensor,  
throttle or shift wires. Possible  
damaged sensor.  
b) Receiver has lost signal from the  
transmitter, the OptiDrive has  
entered fail-safe (throttle and shift  
servos become unresponsive).  
rotational mass for quicker acceleration, and  
constant drive engagement for smooth power delivery.  
If the transmitter throttle settings are changed, it will be necessary  
to complete the programming sequence again.  
If the SET button is released before the Function LED flashes  
green twice in step 3, the OptiDrive will return to the normal  
operation mode.  
The OptiDrive module prevents the transmission from changing  
directions while the truck is in motion. The truck must be completely  
stopped to change directions, regardless of the position of the shift  
selector switch on the transmitter. The OptiDrive module is preset at the  
factory. If the transmitter throttle trim adjustment is changed, then the  
OptiDrive module will need to be re-programmed.  
Blue flashing Sensor“  
Normal operation as  
vehicle moves. Indicates  
If you experience any problems during programming, turn the  
receiver off, then on again, and repeat the programming steps.  
signal pulse from sensor. Depending  
on the rotor position, solid blue or off  
when vehicle is at rest.  
For instructions on how to use the OptiDrive with aftermarket radio  
systems, or to access advanced programming options, visit our website,  
1. The engine must be shut off. The radio system must be on (receiver  
and transmitter).  
Revo 3.3 15  
The Traxxas TQ-3 Radio System  
Always have the transmitter and receiver turned on before you start  
the engine. Never turn the radio system off while the engine is  
running. The on/off switch in the model only turns the receiver on  
and off. It does not turn off the engine.  
TQ-3 Radio System Rules  
Remember, always turn the  
TQ-3 transmitter on first and  
off last to avoid damage to  
your Revo. Never turn the  
radio off while the engine is  
running.  
Each time you prepare to run your Revo,  
you must clear your frequency to be sure  
no one else in the area is using the same  
channel as you.  
Channel 1  
Brown  
Channel 2  
Red  
Always use new or freshly charged batteries for the transmitter, and  
make sure the on-board 5-cell NiMH battery pack is fully charged.  
The function light on the OptiDrive will flash red if the 5-cell battery  
pack requires charging. Weak batteries will limit the range of the  
radio signal between the receiver and the transmitter. Loss of the  
radio signal can cause you to lose control of your Revo.  
Channel 3  
Orange  
There are six possible channels, numbered  
1 through 6. Each is represented by a color.  
Look at the crystal plugged into the back of  
your transmitter to determine which  
channel your truck is assigned to.  
Channel 4  
Yellow  
Channel 5  
Green  
Channel 6  
Blue  
Always turn your TQ-3 transmitter on first  
and off last. This procedure will help to prevent your Revo from  
receiving stray signals from another transmitter, or other source,  
and running out of control.  
.3  
CH  
1
2
3
Always turn your transmitter on first.  
Always turn your receiver on second.  
Then start your engine.  
16 Revo 3.3  
The Traxxas TQ-3 Radio System  
Using the TQ-3 Radio System  
The TQ-3 Radio System was pre-adjusted at the factory. The adjustment  
should be checked before running the model, in case of movement  
during shipping. Here’s how:  
6. Operate the throttle trigger on the transmitter and check for rapid  
operation of the throttle servo. When the throttle trigger is pulled  
back, the carburetor should open (slide moves out). When the  
throttle trigger is pushed all the way forward, the brake should lock.  
When the engine is running,  
don’t use the throttle trim on  
the transmitter to adjust the  
engine idle speed. Instead,  
use the idle speed adjustment  
on the carburetor.  
1. Fully extend the chrome antenna mast on the transmitter and turn  
the switch on. The red indicator light on the transmitter should be  
solid red (not flashing).  
7. Operate the shift button on the transmitter and check for rapid  
operation of the shifting servo. Push the shift button down for  
forward. The servo will operate the spring-loaded shift mechanism  
and you will hear the transmission click into forward. Push the shift  
button up for reverse and you will again hear the transmission click  
and shift into gear.  
2. Turn on the receiver switch in the model. The switch is located in the  
top of the radio compartment. The function light on the OptiDrive  
ESM should be green. A red flashing LED indicates low voltage in the  
RX Power Pack. The sensor LED is intermittent depending on the  
rotor position.  
Don’t attempt to operate  
your Revo if there are any  
problems with your radio  
system or radio interference  
at your location.  
8. Once adjustments are made, turn off the receiver on your Revo,  
followed by the hand-held transmitter.  
3. Position Revo so that its front wheels are off the ground.  
Range-Testing the TQ-3 Radio System  
4. Turn the steering wheel on the transmitter back and forth and check  
for rapid operation of the steering servo. Also, check that the steering  
mechanism is not loose or binding. If the steering operates slowly,  
then check the receiver pack to make sure it is fully charged.  
Before each running session with your Revo, you should range-test your  
radio system to ensure that it operates properly.  
1. Turn on the radio system and check its operation as described in the  
previous section (Using the TQ-3 Radio System).  
5. When looking down at model, the front wheels should be pointing  
straight ahead. If the wheels are turned slightly to the left or right,  
slowly adjust the steering trim control on the transmitter until they  
are pointing straight ahead.  
2. Have a friend hold the model with the engine off.  
3. Make sure your transmitter antenna is fully extended, and then walk  
away from the model with the transmitter until you reach the farthest  
distance you plan to operate the model.  
4. Operate the controls on the transmitter once again to be sure that  
the model responds correctly.  
5. Do not attempt to operate the model if there is any problem with the  
radio system or any external interference with your radio signal at  
your location.  
Revo 3.3 17  

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