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ADJUSTING THE ELECTRONIC SPEED CONTROL
The ET-3s speed control should not need reprogramming with
normal use. However, if you install a different radio system in your
model, or change the transmitter's throttle-neutral setting from
50/50 to 70/30, you will need to reprogram the speed control.
Follow these instructions to reprogram the speed control:
1. Elevate the model so the rear wheels are off the ground and
install the battery of your choice in the battery compartment.
2. Switch on your transmitter.
3. Hold full throttle while you switch the model on by plugging
a charged battery pack into the ET-3s controller. After a few
seconds, you will hear multiple tones and the RED LED will light.
4. Hold full brake. After a few seconds, you will hear multiple tones
and the YELLOW LED will light.
5. Release the trigger to the neutral position. After a few seconds,
you will hear multiple tones and ALL THE LEDs will light.
6. Wait a few more seconds for the speed control to "arm, " indicated
by a double tone. You are now ready to drive.
Low-Voltage Detection
Important!
From the factory, the model's speed control has
been set up for LiPo batteries, with Low-Voltage Detection
enabled. This system is designed to prevent accidental over-
discharging of LiPo batteries. LiPo batteries are intended only
for the most advanced users that are educated on the risks
associated with LiPo battery use.
WARNING: FIRE HAZARD!
Do not use LiPo batteries in this vehicle with
Low-Voltage Detection disabled.
If you choose to run NiMH batteries in your model, Low-Voltage
Detection may be switched off to ensure maximum run time. Follow
these steps to access the Low-Voltage Detection programming
mode:
1. Turn your transmitter on and hold full throttle.
2. While holding full throttle, plug a fully charged battery into the
speed control. Note: You may need assistance to complete this step.
3. Continue to hold full throttle. After a few seconds, you will hear
four consecutive beeps, signaling full-throttle calibration.
4. Continue to hold full throttle. Once you hear a second set
of four beeps, release the throttle to neutral. You are now in
programming mode.
Note: Low-Voltage Detection is the seventh programming mode. In
order to skip Programming Modes 1–6, make sure you push the throttle
trigger to REVERSE, then release to neutral, as indicated in the steps
below.
Failure to do so may cause unintended reprogramming of your
speed control, resulting in poor performance of your vehicle.
5. Push the throttle trigger to the reverse position and hold until
the speed control beeps quickly, then release. The speed control
will beep once, pause, and then beep twice to signify that you
are in Programming Mode 1, Option 2.
6. Continue to push reverse/release to neutral until you hear
seven beeps, a pause, and then one beep, signaling you are in
Programming Mode 7, Option 1.
7. Pull the trigger to full throttle and hold until the speed control
beeps quickly, then release. This will disable Low-Voltage
Detection. You should hear eight beeps, a pause, then one beep,
signaling you have moved to the next programming mode.
8. At this point, you can power off the speed control; then, power
it back on to return to normal operation, or you can continue to
push reverse/release to neutral six more times, making sure that
you hear the fast confirmation beeps for each action. After the
sixth time, the speed control will emit a tone, indicating the end
of the programming cycle and the return to normal operation.
To enable Low-Voltage Detection for use with LiPo
batteries, follow steps 1–5 above. For steps 6 and 7,
continue to push reverse/release to neutral until you hear seven
beeps, a pause, and then two beeps. Pull the trigger to full
throttle and hold until the speed control beeps quickly, then
release. This will enable Low-Voltage Detection. Complete step 8
to return to normal operation.
If you have questions or require technical assistance while
performing this procedure, please contact Traxxas Technical
Support at 1-888-TRAXXAS (1-888-872-9927). Outside of the US, call
+1-972-549-3000.
ET-3s Specifications
Cells:
6-8 cell NiMH, 3s LiPo
Resistance:
0.0003 Ohms per phase
Brake :
Proportional with
adjustable curve
Reversible:
Yes - with lockout
Low-Voltage Detection:
Programmable
Case Size:
1.75"x1.44"x0.85"
Weight with Wires:
121g
Connector Type:
3.5mm bullet
The Traxxas ET-3s speed
control is powered by Castle.
Additional features and
instructions are available
in the Driver's Ed Guide at
CastleCreations.com.
TRAXXAS • 17
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