Traxxas Stampede 4x4 VXL 67086-1 User manual

owner’s manual
MODEL 67086-1

2 •STAMPEDE 4x4 VXL
INTRODUCTION
Thank you for purchasing the Stampede 4X4 VXL equipped with the
Velineon® Brushless Power System. Stampede 4X4 VXL is engineered
like no other to turn extreme power into extreme monster truck fun!
The efficient, low-mass drivetrain is totally optimized for the brutal
torque of Velineon brushless power, and following the legacy of the
Stampede name, this 4X4 is overbuilt and Traxxas Tough to withstand
all the 4-wheel drive monster mayhem you can dish out. It’s even
waterproof for fun in all kinds of wet conditions! The Velineon Power
System lets you experience the best that brushless motor technology
has to offer. Incredible speed, efficient operation, long run times,
and low-maintenance operation are just some of the benefits. We
are confident your Stampede 4X4 VXL will reward you with off-road
excitement and high-speed performance in a durable, long-lasting
product.
This manual contains the instructions you will need to operate and
maintain your model so that you can enjoy it for years to come. We
want you to feel confident that you own one of the best-performing
models in the market and that it is backed by a team of professionals
who aim to provide the highest level of factory support possible.
Traxxas models are about experiencing total performance and
satisfaction, not just with your model, but also with the company that
stands behind it.
We know you’re excited about getting your new model on the road,
but it’s very important that you take some time to read through the
Owner’s Manual. This manual contains all the necessary setup and
operating procedures that will allow you to unlock the performance
potential that Traxxas engineers designed into your model. Also be
sure to read and follow the precautions and warnings in this manual
and on any labels or tags attached to your model. They are there
to educate you on how to operate your model safely and also get
maximum life and performance from your model.
Even if you are an experienced R/C enthusiast, it’s important to
read and follow the procedures in this manual.
Thank you again for going with Traxxas. We work hard every day to
assure you receive the highest level of customer satisfaction possible.
We truly want you to enjoy your new model!
Traxxas Support
Traxxas support is with you every step of the
way. Refer to the next page to find out how to
contact us and what your support options are.
Quick Start
This manual is designed with a Quick
Start path that outlines the necessary
procedures to get your model up
and running in the shortest time possible. If you are an
experienced R/C enthusiast, you will find it helpful and fast.
Be sure and read through the rest of the manual to learn
about important safety, maintenance, and adjustment
procedures. Turn to page 7 to begin.
3BEFORE YOU
PROCEED
3SAFETY
PRECAUTIONS
5TOOLS, SUPPLIES, AND
REQUIRED EQUIPMENT
6ANATOMY OF THE
STAMPEDE 4X4 VXL
7QUICK START:
GETTING UP TO SPEED
8TQ
i RADIO AND
VELINEON BRUSHLESS
POWER SYSTEM
16 ADJUSTING THE
ELECTRONIC SPEED
CONTROL
19 DRIVING YOUR MODEL
22 BASIC TUNING
ADJUSTMENTS
24 MAINTAINING
YOUR MODEL
25 ADVANCED TUNING
ADJUSTMENTS
29 TQ
i ADVANCED
TUNING GUIDE
CONTENTS
REGISTERING YOUR MODEL
In order to serve you better as our customer, please
register your product within 10 days of your purchase
online at Traxxas.com/register.
Traxxas.com/register
FCC Compliance
This device contains a module that complies with the limits for a Class B digital device as described in part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
The limits for a Class B digital device are designed to provide reasonable protection against harmful interference in residential settings. This product generates, uses and can radiate radio frequency energy, and, if
not operated in accordance with the instructions, may cause harmful interference to radio communications. The user is cautioned that changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Canada, Industry Canada (IC)
This Class B digital apparatus complies with Canadian ICES-003 and RSS-210. This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions: This
device may not cause interference, and This device must accept any interference, including interference that may cause undesired operation of the device.
Radio Frequency (RF) Exposure Statement
This equipment complies with radio frequency exposure limits set forth by FCC and Industry Canada for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of
20 centimeters between the radiator and your body or bystanders and must not be co-located or operating in conjunction with any other antenna or transmitter.

STAMPEDE 4x4 VXL •3
Traxxas
6200 Traxxas Way
McKinney, TX 75070
Phone: [phone]
Toll-free 1-888-TRAXXAS
Internet
Traxxas.com
E-mail: [email protected]
Entire contents ©2014 Traxxas.
Traxxas, Ready-To-Race, Ready-
To-Win, Stampede, Stampede 4x4
VXL, Velineon, and ProGraphix
are trademarks or registered
trademarks of Traxxas. Other
brand names and marks are
the property of their respective
holders and are used only for
purposes of identification. No
part of this manual may be
reproduced or distributed in print
or electronic media without the
express written permission of
Traxxas. Specifications are subject
to change without notice.
BEFORE YOU PROCEED
1
Carefully read and follow all instructions in this and any
accompanying materials to prevent serious damage to your
model. Failure to follow these instructions will be considered
abuse and/or neglect.
Before running your model, look over this entire manual and
examine the model carefully. If for some reason you decide it is not
what you wanted, then do not continue any further. Your hobby
dealer absolutely cannot accept a model for return or exchange
after it has been run.
Warnings, Helpful Hints, & Cross-References
Throughout this manual, you’ll notice warnings and helpful hints
identified by the icons below. Be sure to read them!
An important warning about personal safety or avoiding
damage to your model and related components.
Special advice from Traxxas to make things easier
and more fun.
Refers you to a page with a related topic.
SUPPORT
If you have any questions about your model or its operation, call the
Traxxas Technical Support line toll-free at:
1-888-TRAXXAS (1-888-872-9927)*
Technical support is available Monday through Friday from
8:30am to 9:00pm central time. Technical assistance is also available
at Traxxas.com/support. You may also e-mail customer support with
your question at [email protected]. Join thousands of registered
members in our online community at Traxxas.com.
Traxxas offers a full-service, on-site repair facility to handle any
of your Traxxas service needs. Maintenance and replacement
parts may be purchased directly from Traxxas by phone or online
at BuyTraxxas.com. You can save time, along with shipping
and handling costs, by purchasing replacement parts from your
local dealer.
Do not hesitate to contact us with any of your product support needs.
We want you to be thoroughly satisfied with your new model!
SAFETY PRECAUTIONS
All of us at Traxxas want you to safely enjoy your new model.
Operate your model sensibly and with care, and it will be exciting,
safe, and fun for you and those around you. Failure to operate your
model in a safe and responsible manner may result in property
damage and serious injury. The precautions outlined in this manual
should be strictly followed to help ensure safe operation. You alone
must see that the instructions are followed and the precautions are
adhered to.
Important Points to Remember
• Your model is not intended for use on public roads or congested
areas where its operation can conflict with or disrupt pedestrian or
vehicular traffic.
• Never, under any circumstances, operate the model in crowds of people.
Your model is very fast and could cause injury if allowed to collide
with anyone.
• Because your model is controlled by radio, it is subject to radio
interference from many sources that are beyond your control. Since
radio interference can cause momentary losses of radio control, always
allow a safety margin in all directions around the model in order to
prevent collisions.
• The motor, battery, and speed control can become hot during use. Be
careful to avoid getting burned.
• Don’t operate your model at night, or anytime your line of sight to the
model may be obstructed or impaired in any way.
• Most importantly, use good common sense at all times.
Batteries and Battery Charging
Your model uses rechargeable batteries that must be handled with care for
safety and long battery life. Make sure to read and follow all instructions
and precautions for charging and maintaining the batteries. It is your
responsibility to charge and care for the battery packs properly. In addition
to your battery and charger instructions, here are some more tips to keep
in mind.
• Do not charge batteries inside of an automobile. Do not charge batteries
while driving in an automobile. The charger is equipped with a long cord
intended to allow the battery to be charged outside of an automobile
when using the automobile’s auxiliary power socket. If the cord will not
reach outside of the automobile, find another power source.
• Never charge batteries on wood, cloth, carpet or on any other
flammable material.
• Do not operate the charger in a cluttered space, or place objects on top
of the charger or battery.
*Toll-free support is available to U.S. residents only.

4 •STAMPEDE 4x4 VXL
This model is not intended
for use by children under
14 years of age without the
supervision of a responsible
and knowledgeable adult.
Gearing and battery choice
(see LiPo Batteries, right)
affect the skill level of the
model. See chart below.
All instructions and
precautions outlined in this
manual should be strictly
followed to ensure safe
operation of your model.
Gearing: Stock Pinion
Battery: 7-Cell NiMH
Voltage*: 8.4V
mAh: 3000+mAh
Gearing: Opt. Pinion
Battery: 7-Cell NiMH
Voltage*: 8.4V
mAh: 4000+mAh
Gearing: Opt./Stock Pinion
Battery: 2S/3S 20C LiPo
Voltage
*
: 7.4V/11.1V
mAh: 4000/5000+ mAh
Gearing: Opt. Gearing
Battery: 3S 20C LiPo
Voltage*: 11.1V
mAh: 5000+ mAh
*Nominal
See the gearing chart on page
25 for more information.
SAFETY PRECAUTIONS
• If a battery gets hot to the touch during the charging process
(temperature greater than 140°F / 60°C), disconnect the battery fromthe
charger and discontinue charging immediately.
• Always store battery packs safely out of the reach of children and pets.
• Do not short-circuit the battery pack. This may cause burns and severe
damage to the battery pack and create the risk of fire.
• Do not expose the charger to water or moisture.
• Do not disassemble the charger.
• Use the supplied charger to charge the included battery. See “Charging the
Battery Pack” on page 11.
• Never leave batteries to charge unattended.
• Remove the battery from the model while charging.
• Always unplug the battery from the electronic speed control when the
model is not in use and when it is being stored or transported.
• Allow the battery pack to cool off between runs (before charging).
• Children should have responsible adult supervision when charging and
handling batteries.
• Do not use battery packs that have been damaged in any way.
• Do not use battery packs that have damaged wiring, exposed wiring, or a
damaged connector.
• 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.
• 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.
Recycling Your Traxxas Power Cell NiMH Battery
Traxxas strongly encourages you to recycle your Power Cell NiMH
battery when it has reached the end of its useful life. Do not throw your
battery in the trash. All Power Cell NiMH battery packs display the RBRC
(Rechargeable Battery Recycling Corporation) icon, indicating they are
recyclable. To find a recycling center near you, ask your local hobby dealer
or visit www.call2recycle.org.
LiPo Batteries
Lithium Polymer (LiPo) batteries are becoming popular for use in R/C
models due to their compact size, high energy density, and high-current
output. However, these types of batteries require special care and handling
procedures for long life and safe operation. WARNING: LiPo batteries
are intended only for advanced users that are educated on the risks
associated with LiPo battery use. Traxxas does not recommend that
anyone under the age of 14 use or handle LiPo battery packs without the
supervision of a knowledgeable and responsible adult.
Your model is able to use LiPo batteries with nominal voltage not to exceed
11.1 volts (3S packs). LiPo batteries have a minimum safe discharge voltage
threshold that should not be exceeded. The Velineon VXL-3s electronic
speed control is equipped with built-in Low-Voltage Detection that alerts
the driver when LiPo batteries have reached their minimum voltage
(discharge) threshold. It is the driver’s responsibility to stop immediately
to prevent the battery pack from being discharged below its safe
minimum threshold.
Low-Voltage Detection on the speed control is just one part of a
comprehensive plan for safe LiPo battery use. It is critical for you, the user,
to follow all other instructions supplied by the battery manufacturer
and the charger manufacturer for proper charging, use, and storage
of LiPo batteries. Do not attempt to charge LiPo batteries with the
Traxxas charger included in this package. Make sure you understand
how to use your LiPo batteries. Be aware that Traxxas shall not be liable
for any special, indirect, incidental, or consequential damages arising out
of the installation and/or use of LiPo batteries in Traxxas models. If you
have questions about LiPo battery usage, please consult with your local
hobby dealer or contact the battery manufacturer. As a reminder, all
batteries should be recycled at the end of their useful life.
DO NOT ATTEMPT TO CHARGE LIPO BATTERIES OR ANY OTHER TYPE OF
BATTERY WITH THE INCLUDED TRAXXAS CHARGER.
Speed Control
• Disconnect the Batteries: Always disconnect the battery pack from
the speed control when not in use.
• Transmitter on First: Switch on your transmitter first before switching on
the speed control to prevent runaways and erratic performance.
• Don’t Get Burned: The heat sink can get extremely hot, so be careful not
to touch it until it is cool. Supply adequate airflow for cooling.
• Use Stock Connectors: If you decide to change the battery or motor
connectors, only change one battery or motor connector at a time. This
will prevent damage from accidentally mis-wiring the speed control.
Please note that modified speed controls can be subject to a rewiring fee
when returned for service. Removing the battery connector on the speed
control or using the same-gender connectors on the speed control will
void the product’s warranty.
• Insulate the Wires: Always insulate exposed or damaged wiring with heat
shrink tubing to prevent short circuits

STAMPEDE 4x4 VXL •5
TOOLS, SUPPLIES, AND REQUIRED EQUIPMENT
Your model comes with a set of specialty metric tools. You’ll need to purchase other items, available from your hobby dealer, to operate
and maintain your model.
Preload spacers and shock pistons
4 AA alkaline
batteries
Body clips and body washers
Optional pinion gear
2.0mm “L” wrench 1.5mm “L” wrench 4-way wrenchU-joint wrench
Supplied Tools and Equipment
Required Equipment
*Battery and charger style are subject to change and may vary from images.
7-cell NiMH battery pack* NiMH battery charger*
2.5mm “L” wrench 8mm/4mm
wrench
Recommended Equipment
These items are not required
for the operation of your
model, but are a good idea to
include in any R/C toolbox:
• Safety glasses
• Traxxas Ultra Premium Tire
Glue, Part #6468 (CA glue)
• Hobby knife
• Side cutters and/or needle
nose pliers
• Phillips screwdriver
• Soldering iron
For more information on
batteries, see Use the Right
Batteries on page 11.

6 •STAMPEDE 4x4 VXL
ANATOMY OF THE STAMPEDE 4X4 VXL
Motor
(Velineon 3500)
Spur Gear
Pinion Gear
Rear Bumper
Wheelie Bar
Slipper Clutch
Electronic Speed
Control (VXL-3s)
Battery Compartment
LED Light Pipe
Battery Hold-Down
Battery
Receiver
Box
Antenna
Mount
Front
Suspension Arm
Front
Bumper
Steering
Servo
Shock
(Oil Damper)
Turnbuckle
(Toe Link)
Turnbuckle
(Front Camber
Link)
Turnbuckle
(Rear Camber Link)
Rear Shock
Tower
Traxxas High-Current
Connector
Rear Body Mount
Chassis
Front Body
Mount
Front
Shock Tower
Drive
Shaft
Half Shaft
Rear Suspension
Arm
Half Shaft
Shock Guard

STAMPEDE 4x4 VXL •7
QUICK START: GETTING UP TO SPEED
The following guide is an overview of the procedures for getting your model running. Look for the Quick Start logo on the bottom
corners of Quick Start pages.
1. Read the safety precautions on page 3 6. Check servo operation • See page 13
For your own safety, understand where carelessness and misuse
could lead to personal injury and product damage.
Make sure the steering servo is working correctly.
2. Charge the battery pack • See page 11 7. Range test the radio system • See page 14
Fully charge the provided battery pack. Begin charging
your battery right away.
Follow this procedure to make sure your radio system works properly
at a distance, and that there is no interference from outside sources.
3. Install batteries in the transmitter • See page 11 8. Detail your model • See sidebar, page 8
The transmitter requires 4 AA alkaline batteries (sold separately). Apply other decals if desired.
4. Install the battery pack in the model • See page 12 9. Drive your model • See page 19
Your model requires a fully charged battery pack. Driving tips and adjustments for your model.
5. Turn on the radio system • See page 12 10. Maintaining your model • See page 24
Make a habit of turning the transmitter on first and off last. Follow these critical steps to maintain the performance
of your model and keep it in excellent running condition.
The Quick Start Guide is
not intended to replace the
full operating instructions
available in this manual.
Please read this entire
manual for complete
instructions on the proper
use and maintenance of
your model.
Look for the Quick Start
logo at the bottom of
Quick Start pages.

8 •STAMPEDE 4x4 VXL
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
INTRODUCTION
Your model includes the latest Traxxas TQi 2.4GHz transmitter with
Traxxas Link™ Model Memory. The transmitter’s easy-to-use design
provides instant driving fun for new R/C enthusiasts, and also offers
a full complement of pro-level tuning features for advanced users
– or anyone interested in experimenting with the performance of
their model. The steering and throttle channels feature adjustable
Exponential, End Points, and Sub-Trims. Steering and braking Dual-
Rate are also available. Many of the next-level features are controlled
by the Multi-Function knob, which can be programmed to control
a variety of functions. The detailed instructions (page 29) and Menu
Tree (page 31) included in this manual will help you understand and
operate the advanced functions of the new TQi radio system. For
additional information and how-to videos, visit Traxxas.com.
RADIO AND POWER SYSTEM TERMINOLOGY
Please take a moment to familiarize yourself with these radio and
power system terms. They will be used throughout this manual.
A detailed explanation of the advanced terminology and features
of your new radio system begins on page 29.
2.4GHz Spread Spectrum – This model is equipped with the latest
R/C technology. Unlike AM and FM systems that require frequency
crystals and are prone to frequency conflicts, the TQi system
automatically selects and locks onto an open frequency and offers
superior resistance to interference and “glitching.”
BEC (Battery Eliminator Circuit) - The BEC can either be in the
receiver or in the ESC. This circuit allows the receiver and servos
to be powered by the main battery pack in an electric model.
This eliminates the need to carry a separate pack of 4 AA
batteries to power the radio equipment.
Brushless Motor - A D/C brushless motor replaces the brushed
motor’s traditional commutator and brush arrangement with
intelligent electronics that energize the electromagnetic
windings in sequence to provide rotation. Opposite of a brushed
motor, the brushless motor has its windings (coils) on the
perimeter of the motor can and the magnets are mounted to the
spinning rotor shaft.
Cogging - Cogging is a condition sometimes associated with
brushless motors. Typically, it is a slight stutter noticed when
accelerating from a stop. It happens for a very short period as
the signals from the electronic speed control and the motor
synch with each other. The VXL-3s electronic speed control is
optimized to virtually eliminate cogging.
Current - Current is a measure of power flow through the
electronics, usually measured in amps. If you think of a wire as a
garden hose, current is a measure of how much water is flowing
through the hose.
ESC (Electronic Speed Control) - An electronic speed control is the
electronic motor control inside the model. The VXL-3s electronic
speed control uses advanced circuitry to provide precise, digital
proportional throttle control. Electronic speed controls use
power more efficiently than mechanical speed controls so that
the batteries run longer. An electronic speed control also has
circuitry that prevents loss of steering and throttle control as the
batteries lose their charge.
Frequency band - The radio frequency used by the transmitter to
send signals to your model.
This model operates on the 2.4GHz
direct-sequence spread spectrum.
kV Rating - Brushless motors are often rated by their kV number.
The kV rating equals no-load motor rpm with 1 volt applied. The
kV increases as the number of wire turns in the motor decreases.
As the kV increases, the current draw through the electronics
also increases. The Velineon 3500 motor is a 3500 kV motor
optimized for the best speed and efficiency in lightweight 1/10
scale models.
LiPo - Abbreviation for Lithium Polymer. Rechargeable LiPo
battery packs are known for their special chemistry, which
allows extremely high energy density and current handling in a
compact size. These are high performance batteries that require
special care and handling. LiPo battery packs are for advanced
users only.
mAh – Abbreviation for milliamp hour, a measure of the capacity
of the battery pack. The higher the number, the longer the
battery will last between recharges.
Neutral position - The standing position that the servos seek
when the transmitter controls are at the neutral setting.
NiCad - Abbreviation for nickel-cadmium. The original
rechargeable hobby pack, NiCad batteries have very high
current
handling, high capacity, and can last up to 1000 charging cycles.
Good charging procedures are required to reduce the possibility
of developing a “memory” effect and shortened run times.
Applying the Decals
The main decals for your model
have been applied at the
factory. Additional decals are
printed on self-adhesive clear
mylar and are die-cut for easy
removal. Use a hobby knife to
lift the corner of a decal and lift
it from the backing.
To apply the decals, place one
end down, hold the other end
up, and gradually smooth the
decal down with your finger
as you go. This will prevent air
bubbles. Placing both ends of
the decal down and then trying
to smooth it out will result in
air pockets. Look at the photos
on the box for typical decal
placement.
8

STAMPEDE 4x4 VXL •9
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM TRAXXAS TQ
i RADIO & VELINEON POWER SYSTEM
NiMH - Abbreviation for nickel-metal hydride. Rechargeable NiMH
batteries offer high current handling and much greater resistance
to the “memory” effect. NiMH batteries generally allow higher
capacity than NiCad batteries. They can last up to 500 charge
cycles. A peak charger designed for NiMH batteries is required for
optimal performance.
Receiver - The radio unit inside your model that receives signals
from the transmitter and relays them to the servos.
Resistance - In an electrical sense, resistance is a measure of how
an object resists or obstructs the flow of current through it.
When flow is constricted, energy is converted to heat and is lost.
The Velineon power system is optimized to reduce electrical
resistance and the resulting power-robbing heat.
Rotor - The rotor is the main shaft of the brushless motor. In a
brushless motor, the magnets are mounted to the rotor, and the
electromagnetic windings are built into the motor housing.
Sensored - Sensored refers to a type of brushless motor that
uses an internal sensor in the motor to communicate rotor
position information back to the electronic speed control. The
VXL-3s electronic speed control is able to use sensored motors
when applications benefit from them (such as some sanctioned
racing classes).
Sensorless - Sensorless refers to a brushless motor that uses
advanced instructions from an electronic speed control to
provide smooth operation. Additional motor sensors and
wiring are not required. The VXL-3s electronic speed control is
optimized for smooth sensorless control.
Servo - Small motor unit in your model that operates the steering
mechanism.
Solder Tabs - Accessible, external contacts on the motor that
allows for easy wire replacement. The Velineon 3500 is equipped
with solder tabs.
Transmitter - The hand-held radio unit that sends throttle and
steering instructions to your model.
Trim - The fine-tuning adjustment of the neutral position of the
servos, made by adjusting the throttle and steering trim knobs
on the face of the transmitter. Note: The Multi-Function knob
must be programmed to serve as a throttle trim adjustment.
Thermal Shutdown Protection - Temperature sensing electronics
used in the VXL-3s electronic speed control detect overloading
and overheating of the transistor circuitry. If excessive
temperature is detected, the unit automatically shuts down to
prevent damage to the electronics.
2-channel radio system - The TQi radio system, consisting of
the receiver, the transmitter, and the servos. The system uses
two channels: one to operate the throttle and one to operate
the steering.
Voltage - Voltage is a measure of the electrical potential difference
between two points, such as between the positive battery terminal
and ground. Using the analogy of the garden hose, while current is
the quantity of water flow in the hose, voltage corresponds to the
pressure that is forcing the water through the hose.
IMPORTANT RADIO SYSTEM PRECAUTIONS
• Do not kink the receiver’s antenna wire. Kinks in the antenna wire
will reduce range.
• DO NOT CUT any part of the receiver’s antenna wire. Cutting the
antenna will reduce range.
• Extend the antenna wire in the model as far as possible for
maximum range. It is not necessary to extend the antenna wire out
of the body, but wrapping or coiling the antenna wire should be
avoided.
• Do not allow the antenna wire to extend outside the body without
the protection of an antenna tube, or the antenna wire may get
cut or damaged, reducing range. It is recommended to keep the
wire inside the body (in the antenna tube) to prevent the chance
of damage.
To prevent loss of radio range
do not kink or cut the black wire,
do not bend or cut the metal tip,
and do not bend or cut the white
wire at the end of the metal tip.
Correct NoNo No

10 •STAMPEDE 4x4 VXL
Your model is equipped with the newest TQi 2.4GHz transmitter
with Traxxas Link™ Model Memory. The transmitter has two
channels for controlling your throttle and steering. The receiver
inside the model has 5 output channels. Your model is equipped
with one servo and an electronic speed control.
MODEL WIRING DIAGRAM
to Motor
LED
EZ-Set Button
(On/Off Button)
Heat Sink
VXL-3s ELECTRONIC SPEED CONTROL
Traxxas High-Current
Connector (Male)
to Battery
Receiver cable
(RX wire)
Cooling Fan
Connector
(for optional use)
TRANSMITTER AND RECEIVER
Steering
Trim
Multi-Function
Knob
Throttle
Trigger
Throttle Neutral
Adjust Steering Wheel
Power Switch Battery Compartment
Set Button
Menu Button
Red/Green Status LED
see page 30 for more info
Link
Button
LED
Sensor Expansion
Port**
V/T - Voltage/Temp Senor Port**
RPM - RPM Sensor Port**
BATT/
CH5 - Battery/Channel 5*
CH4 - Channel 4*
CH3 - Channel 3*
CH2 - Speed Control
CH1 - Steering Servo
CH1 - Channel 1*
* Not used ** Accessory sensor port for use with TQi Docking Base
(see Traxxas.com and included materials for more information)
Traxxas High-Current
Connector (Male)
to Battery
Brushless Motor
(see sidebar for proper
motor wiring)
Channel 1
Steering Servo
Channel 2
Electronic Speed Control
Cooling Fan
Connector
(for optional use)
Antenna Motor Cap
** Accessory sensor port for use with the Telemetry Expander Module (see Traxxas.com and included materials for more information)
ESC/Motor Wiring Diagram
Velineon 3500 Specs
Type: Sensorless brushless
RPM/volt: 3500
Magnet type: Ultra High-
Temperature Sintered
Neodymium
Connection type : 3.5mm bullet
Wire size: 12 Gauge
Max RPM: 50,000
Diameter: 36mm (1.42") (540 size)
Length: 55mm (2.165")
Weight: 262g (9.24oz)
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM

STAMPEDE 4x4 VXL •11
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
CHARGING THE BATTERY PACK
The Traxxas Battery Charger is a fully featured NiMH (Nickle Metal
Hydride) charger. It features 4-amp charge current for fast charging
and advanced peak detection to optimize every charge. Take this
compact charger with you wherever you want to have radio controlled
fun! Do not charge batteries inside of an automobile. Read the Safety
Precautions section of this manual.
1. Plug the charger into a 12-volt
automotive auxiliary power
socket. The charger is compatible
with 12-volt automotive auxiliary
power sockets only. The LED on the
charger will glow red to indicate it
is ready to charge a battery.
2. Connect the battery to begin
charging. Plug the battery into
the charger. The charger’s LED
will flash green, indicating that
charging has begun. The flashing
green LED on the charger indicates
the charge progress.
3. Disconnect the battery when
charging is complete. The
Traxxas 4amp DC charger uses
sophisticated voltage-detection
circuitry to monitor the battery and
automatically stop charging when
the pack has reached
maximum capacity. When
the battery is fully charged,
the LED will light solid
green. The battery will
be warm in your hand.
Disconnect the battery.
INSTALLING TRANSMITTER BATTERIES
Your TQi transmitter uses 4 AA batteries. The battery
compartment is located in the base of the transmitter.
1. Remove the battery compartment door by pressing the tab
and sliding the door open.
2. Install the batteries in the correct orientation as indicated in
the battery compartment.
3. Reinstall the battery door and snap it closed.
4. Turn on the transmitter and check the status indicator for a
solid green light.
If the status LED flashes red, the transmitter
batteries may be weak, discharged or
possibly installed incorrectly. Replace
with new batteries. The power indicator
light does not indicate the charge level
of the battery pack installed in the model. Refer to the
Troubleshooting section on page 27 for more information on
the transmitter Status LED codes.
If the status LED doesn’t light
green, check the polarity
of the batteries. Check
rechargeable batteries for
a full charge. If you see any
other flashing signal from the
LED, refer to the chart on page
27 to identify the code.
Use the Right Batteries
Your transmitter uses
AA batteries. Use new
alkaline batteries. Do
not use rechargeable AA
cells to power the TQi
transmitter, as they will not
provide sufficient voltage
for optimum transmitter
performance.
Caution: Discontinue running
your model at the first sign of
weak batteries (flashing red
light) to avoid losing control.
Disconnected
Connected
Charged
1
2
3
The included charger is
designed for use only with
Traxxas NiMH batteries
with iD. Legacy Traxxas
High-Current Connectors
are not compatible with this
charger. DO NOT try to force
legacy connectors into the
charge connector.
CHARGE PROGRESS
x1 1 green flash 0 - 25% charged
x2 2 green flashes 25% - 50% charged
x3 3 green flashes 50% - 75% charged
x4 4 green flashes 75% or more charged
Solid green LED 100% charged
CHARGER LED INDICATION MEANING
Solid Red LED Ready for Charging
Slowly Flashing Green LED Charging (see Charge Progress chart)
Solid Green LED Battery Fully Charged
Flashing Red LED Charger error
2, 3

12 •STAMPEDE 4x4 VXL
4, 5
INSTALLING THE
BATTERY PACK
Install the battery pack with the
battery wires facing the rear
of the model. Insert the tabs
of the battery hold-down into
the slots in the rear hold-down
retainer and then place the
battery hold-down over the
post. Secure the battery hold-
down with body clip in the hole
in the post. Do not connect the
battery pack yet.
Using a Different Battery Configuration
The battery hold-down is capable of accommodating either side-
by-side racing style packs, “hump packs” with a stacked seventh
cell, or the more common stick packs. The battery compartment is
configured for stick packs from the factory. The number on each
side of the hold-down indicates the battery height in millimeters
that hold-down can accommodate. Note that one side is labeled
“25” and the other side is labeled “23”. The 25mm side is for use
with typical stick type battery packs. If you are using side-by-side
racing packs, simply flip the hold-down over to the 23mm side and
use it on the opposite side of the chassis. Note: For taller batteries,
an extended battery hold-down, part #6727X, is available (sold
separately). For shorter batteries (6-cell), us the included foam
block in the front of the battery compartment.
RADIO SYSTEM RULES
• Always turn your TQi transmitter on first and off last. This
procedure will help to prevent your model from receiving stray
signals from another transmitter, or other source, and running
out of control. Your model has electronic fail-safes to prevent this
type of malfunction, but the first, best defense against a runaway
model is to always turn the transmitter on first and off last.
25mm side: Standard
NiMH stick pack setup
23mm side: Side-by-side
NiMH pack setup
Battery Compartment Specs:
• 142mm (5.59") long
x 49.5mm (1.95") wide
• Height with stock strap:
23mm (.91") or 25mm (.94")
• Height with Part #6727X
options battery standoffs:
Up to 44mm (1.73")
Note: There is some flex with
the battery strap. It is possible
to fit slightly taller batteries in
the compartment.
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
Battery iD
Your model’s included battery
pack is equipped with Traxxas
Battery iD. This exclusive
feature allows Traxxas battery
chargers (sold separately)
to automatically recognize
connected battery packs
and optimize the charge
settings for the battery.
This eliminates the need to
worry over charger settings
and menus for the easiest
and safest charging solution
possible. Visit Traxxas.com to
learn more about this feature
and available Traxxas iD
chargers and batteries.
RADIO SYSTEM CONTROLS
Forward
Neutral
Brake/Reverse
T
U
R
N
R
I
G
H
T
T
U
R
N
L
E
F
T
Always turn your
transmitter on first. Turn on the model.
12
Plug in the battery.
3

STAMPEDE 4x4 VXL •13
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
6
Remember, always turn the
TQi transmitter on first and
off last to avoid damage to
your model.
Automatic Fail-Safe
The TQi transmitter and
receiver are equipped with
an automatic fail-safe system
that does not require user
programming. In the event
of signal loss or interference,
the throttle will return to
neutral and the steering will
hold its last commanded
position. If the fail-safe
system activates while you
are operating your model,
determine the reason for
signal loss and resolve the
problem before operating
your model again.
Stop immediately at the first
sign of weak batteries. Never
turn the transmitter off when
the battery pack is plugged
in. The model could run out
of control.
• Always use new or freshly charged batteries for the radio system.
Weak batteries will limit the radio signal between the receiver
and the transmitter. Loss of the radio signal can cause you to lose
control of your model.
• In order for the transmitter and receiver to bind to one another,
the receiver in the model must be turned on within 20 seconds
of turning on the transmitter. The transmitter LED will flash fast
red, indicating a failure to link. If you miss it, simply turn off the
transmitter and start over.
• Always turn on the transmitter before plugging in the battery.
RADIO SYSTEM BASIC ADJUSTMENTS
Throttle Neutral Adjustment
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 reverse.
70/30: Allows more throttle travel (70%) and less reverse
travel (30%).
Note: We strongly recommend to leave this control in its factory
location until you become familiar with all the adjustments
and capabilities of your model. To change the throttle neutral
adjust position, turn the transmitter off before adjusting the
neutral position. You will need to reprogram your electronic
speed control to recognize the 70/30 setting. Turn to ESC Setup
Programming on page 16 for instructions.
Steering Trim
The electronic steering trim located on the
face of the transmitter adjusts the neutral
(center) point of the steering channel.
Multi-Function Knob
The Multi-Function knob can be
programmed to control a variety of
functions. From the factory, the Multi-
Function knob controls steering sensitivity,
also known as exponential or “expo.” When the knob is turned
counterclockwise all the way to the left (default position), expo is
off and steering sensitivity will be linear (the most commonly used
setting). Turning the knob clockwise will “add expo” and decrease
the steering sensitivity in the initial range of steering wheel travel
left or right from center. For more detail on steering exponential,
refer to page 15.
USING THE RADIO SYSTEM
The TQi Radio System has been pre-adjusted at the factory. The
adjustment should be checked before running the model in case
of movement during shipping. Here’s how:
1. Turn the transmitter switch on. The status LED on the
transmitter should be solid green (not flashing).
2. Elevate the model on a block or a stand so that all the tires
are off the ground. Make sure your hands are clear of the
moving parts of the model.
3. Plug the battery pack in the model into the speed control.
4. The on/off switch is integrated into the speed control. With
the transmitter on, press and release the EZ-Set button (.25
seconds). The LED will shine RED (see note below). This turns
the model on. To turn the VXL-3s off, press and hold the EZ-Set
button until the LED turns off (.5 seconds). Note: If the LED
shines green, Low-Voltage Detection is activated. This will
cause erratic performance from the included NiMH battery
pack. The default factory setting is for Low-Voltage Detection
to be disabled (LED shines red). Make sure to turn the low
voltage detection on when using LiPo batteries. Never use LiPo
batteries while Low-Voltage Detection is turned off. See page
16 for more information.
5. 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, check for weak batteries.
6. When looking down at the
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.

14 •STAMPEDE 4x4 VXL
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
7
Using Reverse: While driving,
push the throttle trigger
forward to apply brakes.
Once stopped, return the
throttle trigger to neutral.
Push the throttle trigger
forward again to engage
proportional reverse.
7. Gently operate the throttle trigger to ensure that you have
forward and reverse operation, and that the motor stops when
the throttle trigger is at neutral. Warning: Do not apply full
throttle in forward or reverse while the model is elevated.
8. Once adjustments are made, turn off the receiver on your
model, followed by the hand-held transmitter.
Range-Testing the Radio System
Before each running session with your model, 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.
2. Have a friend hold the model. Make sure hands and clothing are
clear of the wheels and other moving parts on the model.
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.
Higher Speeds Require Greater Distance
The faster you drive your model, the more quickly it will near
the limit of radio range. At 60mph, a model can cover 88 feet
every second! It’s a thrill, but use caution to keep your model
in range. If you want to see your model achieve its maximum
speed, it is best to position yourself in the middle of the truck’s
running area, not the far end, so you drive the truck towards
and past your position. In addition to maximizing the radio’s
range, this technique will keep your model closer to you,
making it easier to see and control.
No matter how fast or far you drive your model, always leave
adequate space between you, the model, and others. Never
drive directly toward yourself or others.
TQi Binding Instructions
For proper operation, the transmitter and receiver must be
electronically “bound.” This has been done for you at the factory.
Should you ever need to re-bind the system or bind to another
transmitter or receiver, follow these instructions. Note: The receiver
must be connected to a 4.8-6.0v (nominal) power source for
binding, and the transmitter and receiver must be within 5 feet of
each other.
1. Press and hold the transmitter’s SET button as you switch the
transmitter on. The transmitter’s LED will flash red slowly.
Release the SET button.
2. Press and hold the receiver’s LINK button as you switch on
the speed control (by pressing the EZ-Set button). Release the
LINK button.
3. When the transmitter and receiver’s LEDs turn solid green, the
system is bound and ready for use. Confirm that the steering
and throttle operate properly before driving your model.
Steering Sensitivity (Exponential)
The Multi-Function knob on the TQi transmitter has been
programmed to control Steering Sensitivity (also known as
exponential). The standard setting for Steering Sensitivity is
“normal (zero exponential),” with the dial full left in its range of
travel. This setting provides linear servo response: the steering
servo’s movement will correspond exactly with the input from
the transmitter’s steering wheel. Turning the knob clockwise from
center will result in “negative exponential” and decrease steering
sensitivity by making the servo less responsive near neutral, with
increasing sensitivity as the servo nears the limits of its travel range.
The farther you turn the knob, the more pronounced the change
in steering servo movement will be. The term “exponential” comes
from this effect; the servo’s travel changes exponentially relative
to the input from the steering wheel. The exponential effect is
indicated as a percentage—the greater the percentage, the greater
the effect. The illustrations below show how this works.

STAMPEDE 4x4 VXL •15
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
Normal Steering Sensitivity (0% exponential)
In this illustration, the steering servo’s travel (and with it, the
steering motion of the model’s front wheels) corresponds precisely
with the steering wheel. The ranges are exaggerated for illustrative
purposes.
Decreased Steering Sensitivity (Negative Exponential)
By turning the Multi-Function knob clockwise, the steering
sensitivity of the model will be decreased. Note that a relatively
large amount of steering wheel travel results in a smaller amount of
servo travel. The farther you turn the knob, the more pronounced
the effect becomes. Decreased steering sensitivity may be helpful
when driving on low-traction surfaces, when driving at high speed,
or on tracks that favor sweeping turns where gentle steering inputs
are required.The ranges are exaggerated for illustrative purposes.
Experiment! Try varying degrees of exponential. It’s easy to go back
to “zero” if you don’t like the effect. There’s no wrong way to adjust
exponential. Any setting that makes you more comfortable with
your model’s handling is the “right setting.”
SETTING UP THE ANTENNA
The receiver antenna has been set up
and installed from the factory. The
antenna is secured by a 3x4mm set
screw. To remove the antenna tube,
simply remove the set screw with the
included 1.5mm wrench.
When reinstalling the antenna,
first slide the antenna wire into the
bottom of the antenna tube until
the white tip of the antenna is at
the top of the tube under the black
cap. Next insert the antenna tube
into the mount while making sure
that antenna wire is in the slot in the antenna mount, then install
the set screw next to the antenna tube. Use the supplied 1.5mm
wrench to tighten the screw just until the antenna tube is securely
in place. Do not over tighten. Do not bend or kink the antenna
wire! See the sidebar for more information. Do not shorten the
antenna tube.
Turning Range
at Transmitter
Effective Turning
Range on Model
Antenna
Mount
Antenna
Tip
Antenna
Tube
To prevent loss of radio
range do not kink or cut the
black wire, do not bend or
cut the metal tip, and do not
bend or cut the white wire at
the end of the metal tip.
Correct NoNo No

16 •STAMPEDE 4x4 VXL
ADJUSTING THE ELECTRONIC SPEED CONTROL
VXL-3s Battery Settings (Low-Voltage Detection Setting)
The Velineon VXL-3s electronic speed control is equipped with
built-in Low-Voltage Detection. The Low-Voltage Detection circuitry
constantly monitors the battery voltage. When the battery voltage
begins to reach the minimum recommended discharge voltage
threshold for LiPo battery packs, the VXL-3s will limit the power
output to 50% throttle. When the battery voltage attempts to fall
below the minimum threshold, the VXL-3s will shut down all motor
output. The LED on the speed control will slowly blink red, indicating
a low-voltage shutdown. The VXL-3s will stay in this mode until a
fully charged battery is connected.
The VXL-3s speed control’s Low-Voltage Detection has been set up
for best performance with the batteries supplied with your model. If
factory-equipped with NiMH batteries, the speed control’s LED will
glow red when it is turned on, indicating Low-Voltage Detection is
disabled. If factory-equipped with LiPo batteries, the LED will glow
green when it is turned on, indicating Low-Voltage Detection is
activated. Never use LiPo batteries while Low-Voltage Detection is
disabled.
To verify the Low-Voltage Detection setting:
1. Turn on the transmitter (with the throttle at neutral).
2. Connect a fully charged battery pack to the VXL-3s.
3. Press and release the EZ-Set button to turn the VXL-3s on. If the
LED is solid red, then the Low-Voltage Detection is DISABLED (not
safe to use LiPo batteries). If the LED is solid green, then Low-
Voltage Detection is ACTIVATED.
To activate Low-Voltage Detection (LiPo setting):
1. Make sure the LED on the VXL-3s is on and red.
2. Press and hold the EZ-Set button for ten seconds.
The LED will turn off and then light green. Also, a
“rising” musical tone will be emitted from the motor.
3. Low-Voltage Detection is now ACTIVATED.
To disable Low-Voltage Detection (NiMH setting):
1. Make sure the LED on the VXL-3s is on and green.
2. Press and hold the EZ-Set button for ten seconds.
The LED will turn off and then light red. Also, a
“falling” musical tone will be emitted from the motor.
3. Low-Voltage Detection is now DISABLED.
Transmitter Adjustments for the VXL-3s ESC
Before attempting to program your VXL-3s ESC, it is important to
make sure that your transmitter is properly adjusted (set back to the
factory defaults). Otherwise, you may not get the best performance
from your speed control.
The transmitter should be adjusted as follows:
If the transmitter settings have been adjusted, reset them to the
factory defaults.
1. Turn the transmitter off.
2. Hold both MENU and SET.
3. Turn the transmitter on.
4. Release MENU and SET. The transmitter LED will blink red.
5. Press SET to clear settings. The LED will turn solid green and the
transmitter is restored to default.
VXL-3s Setup Programming (Calibrating your ESC and transmitter)
Read through all of the programming steps before you begin. If you
get lost during programming or receive unexpected results, simply
unplug the battery, wait a few seconds, plug the battery back in, and
start over.
1. Connect a fully charged battery pack to the VXL-3s.
2. Turn on the transmitter (with the throttle at neutral).
3. Press and hold the EZ-Set button (A). The LED
will first turn green and then red. Release the
EZ-Set button.
4. When the LED blinks RED ONCE, pull the
throttle trigger to the full throttle position
and hold it there (B).
5. When the LED blinks RED TWICE, push the
throttle trigger to the full reverse and hold
it there (C).
6. When the LED blinks GREEN ONCE,
programming is complete. The LED will
then shine green or red (depending on Low-Voltage
Detection setting), indicating the VXL-3s is on and at
neutral (D).
Green then Red
A
Once Green
D
Once Red
B
Twice Red
C
VXL-3s Specifications
Input voltage:
4.8-11.1V (4 to 9 cells
NiMH or 2S to 3S LiPo)
Supported Motors:
Brushless
Motor limit:
None
Continuous current:
200A
Peak current :
320A
BEC voltage:
6.0V DC
Transistor type:
MOSFET
Battery connector:
Traxxas High-Current
Connector
Motor connectors:
TRX 3.5mm bullet connectors
Motor/Battery Wiring:
12-gauge Maxx® Cable
Thermal Protection:
2-stage thermal shutdown

STAMPEDE 4x4 VXL •17
VXL-3s Operation
To operate the speed control and test programming, place the
vehicle on a stable block or stand so that all of the drive wheels are
off the ground. Disconnect motor wires “A” and “C” (see page 10),
this will ensure the motor does not drive the wheels during testing.
Do not test programming without disconnecting the motor wires.
Note that in steps 1-7 below, Low-Voltage Detection is DISABLED
(factory default) and the LED shines red. If Low-Voltage Detection is
ACTIVATED, the LED will shine green instead of red in steps 1-7 below.
Never use LiPo batteries while Low-Voltage Detection is disabled.
1. With the transmitter on, press and release the EZ-Set button. The
LED will shine red. This turns the VXL-3s on.
2. Apply forward throttle. The LED will turn off until full throttle
power is reached. At full throttle, the LED will illuminate red.
3. Move the trigger forward to apply the brakes. Note that braking
control is fully proportional. The LED will turn off until full braking
power is reached. At full brakes, the LED will illuminate red.
4. Return the throttle trigger to neutral. The LED will shine red.
5. Move the throttle trigger forward again to engage reverse (Profile
#1). The LED will turn off. Once full reverse power is reached, the
LED will illuminate red.
6. To stop, return the throttle trigger to neutral. Note that there is a
programmed delay when changing from reverse to forward. This
prevents damage to the transmission on high-traction surfaces.
7. To turn the VXL-3s off, press the EZ-Set button until the LED turns
off (.5 seconds).
VXL-3s Profile Selection
The speed control is factory set to Profile #1 (100% forward, brakes,
and reverse). To disable reverse (Profile #2) or to allow 50% forward
and 50% reverse (Profile #3), follow the steps below. The speed
control should be connected to the receiver and battery, and the
transmitter should be adjusted as described previously. The profiles
are selected by entering the programming mode.
Profile Description
Profile #1 (Sport Mode): 100% Forward, 100% Brakes, 100% Reverse
Profile #2 (Race Mode): 100% Forward, 100% Brakes, No Reverse
Profile #3 (Training Mode): 50% Forward, 100% Brakes, 50% Reverse
Selecting Sport Mode
(Profile #1: 100% Forward, 100% Brakes, 100% Reverse)
1. Connect a fully charged battery pack to
the VXL-3s and turn on your transmitter.
2. With the VXL-3s off, press and hold
the EZ-Set button until the LED turns
solid green, then solid red and then
begins blinking red (indicating the
Profile numbers).
3. When the LED blinks red once,
release the EZ-Set button.
4. The LED will blink and then turn solid green (Low-Voltage
Detection ACTIVE) or red (Low-Voltage Detection DISABLED).
The model is ready to drive.
Selecting Race Mode
(Profile #2: 100% Forward, 100% Brakes, No Reverse)
1. Connect a fully charged battery pack to
the VXL-3s and turn on your transmitter.
2. With the VXL-3s off, press and hold
the EZ-Set button until the LED turns
solid green, then solid red and then
begins blinking red (indicating the
Profile numbers).
3. When the LED blinks red twice,
release the EZ-Set button.
4. The LED will blink and then turn solid green (Low-Voltage
Detection ACTIVE) or red (Low-Voltage Detection DISABLED).
The model is ready to drive.
ADJUSTING THE ELECTRONIC SPEED CONTROL
B
One blink Red
A
Green to Red to Off
D
Solid
C
Release
B
Two blinks Red
A
Green to Red to Off
D
Solid
C
Release

18 •STAMPEDE 4x4 VXL
ADJUSTING THE ELECTRONIC SPEED CONTROL
Patented Training Mode
(Profile #3) reduces forward
and reverse throttle by 50%.
Training Mode is provided
to reduce the power output,
allowing beginning drivers
to better control the model.
As driving skills improve,
simply change to Sport or
Race Mode for full-power
operation.
Tip For Fast Mode Changes
The VXL-3s is set to Profile 1
(Sport Mode) as the default.
To quickly change to Profile 3
(Training Mode), with the
transmitter on, press and
hold the SET button until the
light blinks red three times
and then release.
For full power, quickly change
back to Profile 1 (Sport Mode)
by pressing and holding the
SET button until the light
blinks red one time and
then releasing.
The VXL-3s has built-in
programming that prevents
accidental activation of
reverse while in forward
motion and vice-versa. You
must come to a complete
stop, release the throttle
trigger, then apply opposite
throttle to engage the motor
in the desired direction.
Selecting Training Mode
(Profile #3: 50% Forward, 100% Brakes, 50% Reverse)
1. Connect a fully charged battery pack to
the VXL-3s and turn on your transmitter.
2. With the VXL-3s off, press and hold the
EZ-Set button until the LED turns solid
green, then solid red and then begins
blinking red (indicating the Profile
numbers).
3. When the LED blinks red three times,
release the EZ-Set button.
4. The LED will blink and then turn solid green (Low-Voltage Detection
ACTIVE) or red (Low-Voltage Detection DISABLED). The model is
ready to drive.
Note: If you missed the mode you wanted, keep the EZ-Set button
pressed down and the blink cycle will repeat until the button is
released and a Mode is selected.
LED Codes and Protection Modes
• Solid Green: VXL-3s power-on light. Low-Voltage Detection is
ACTIVATED (LiPo setting).
• Solid Red: VXL-3s power-on light. Low-Voltage Detection is
DISABLED (NiCad/NiMH setting). Never use LiPo batteries
while Low-Voltage Detection is disabled.
• Slow Blinking Red (with Low-Voltage Detection on): The
VXL-3s has entered Low-Voltage Protection. When the
battery voltage begins to reach the minimum recommended
discharge voltage threshold for LiPo battery packs, the VXL-3s
will limit the power output to 50% throttle. When the battery
voltage attempts to fall below the minimum threshold, the
VXL-3s will shut down all motor output. The LED on the
speed control will slowly blink red, indicating a low-voltage
shutdown. The VXL-3s will stay in this mode until a fully
charged battery is connected.
• Fast Blinking Red: Thermal Shutdown Protection Stage 1.
If the motor has lower than normal power and the VXL-3s
is hot, the VXL-3s has entered Stage 1 Thermal Shutdown
Protection to guard against overheating caused by excessive
current flow. If the motor has no power and the VXL-3s is
very hot, the VXL-3s has entered Stage 2 Thermal Shutdown
Protection and has automatically shut down. Let the VXL-
3s cool. Make sure your model is properly geared for the
conditions (see page 25).
• Very Fast Blinking Red: Thermal Shutdown Protection and
Low Voltage Protection (see above) have occurred at the
same time.
• Alternating; Blinks Red then Green: If the motor has no
power, the VXL-3s has entered Over Voltage Protection. If
a battery with too high voltage is used, the VXL-3s will go
into a fail-safe mode. WARNING: If input voltage exceeds
approximately 20-volts, the ESC may be damaged. Do not
exceed 12.6 maximum peak input voltage.
• Blinking Green: The VXL-3s is indicating the transmitter
Throttle Trim (see page 26) is incorrectly set. If the Multi-
Function knob is set to throttle trim, then adjust the Throttle
Trim to the middle “0” setting.
B
Three blinks Red
A
Green to Red to Off
D
Solid
C
Release

STAMPEDE 4x4 VXL •19
9
Now it’s time to have some fun! This section contains instructions on
driving and making adjustments to your model. Before you go on, here
are some important precautions to keep in mind.
• Allow the model to cool for a few minutes between runs. This is
particularly important when using high-capacity battery packs that
allow extended periods of running. Monitoring temperatures will
extend the lives of the batteries and motors. See page 27 for advanced
user information on monitoring temperatures.
• Do not continue to operate the model with low batteries or you
could lose control of it. Indications of low battery power include slow
operation, sluggish servos (slow to return to center), or ESC shutdown
due to the Low-Voltage Detection circuitry. Stop immediately at the
first sign of weak batteries. When the batteries in the transmitter
become weak, the power light will begin to flash red. Stop immediately
and install new batteries.
• Do not drive the model at night, on public streets, or in large crowds of
people.
• If the model becomes stuck against an object, do not continue to run
the motor. Remove the obstruction before continuing. Do not push or
pull objects with the model.
• Because the model is controlled by radio, it is subject to radio
interference from many sources beyond your control. Since radio
interference can cause momentary losses of control, allow a safety
margin of space in all directions around the model in order to prevent
collisions.
• Use good, common sense whenever you are driving your model.
Intentionally driving in an abusive and rough manner will only result in
poor performance and broken parts. Take care of your model so that
you can enjoy it for a long time to come.
• When using the supplied optional pinion for top-speed running, limit
your driving to paved surfaces only. Running in grass and off-road
could cause excessive loads on the electrical system in the model.
• High-performance vehicles produce small vibrations that may loosen
hardware over time. Frequently check wheel nuts and other screws on
your vehicle to ensure that all hardware remains properly tightened.
About Run Time
A large factor affecting run time is the type and condition of your
batteries. The milliamp hour (mAh) rating of the batteries determines
how large their “fuel tank” is. A 3000mAh battery pack will theoretically
run twice as long as a 1500mAh sport pack. Because of the wide
variation in the types of batteries that are available and the methods
with which they can be charged, it’s impossible to give exact run times
for the model.
Another major factor that affects run time is how the model is driven.
Run times may decrease when the model is driven repetitively from a
stop to top speed and with repetitive hard acceleration.
Tips for Increasing Run Time
• Use batteries with the highest mAh rating you can purchase.
• Use a high-quality peak-detecting charger.
• Read and follow all maintenance and care instructions provided by the
manufacturer of your batteries and charger.
• Keep the VXL-3s cool. Get plenty of airflow across the ESC heat sinks.
• Use the correct Low-Voltage Detection setting for your battery (see
page 16). Low-Voltage Detection can be off for maximum NiMH battery
runtime. Never use LiPo batteries while Low-Voltage Detection is
turned off.
• Lower your gear ratio. Installing a smaller pinion or larger spur gear
will lower your gear ratio, causing less power draw from the motor and
battery, and reducing overall operating temperatures.
• Maintain your model. Do not allow dirt or damaged parts to cause
binding in the drivetrain. Keep the motor clean.
mAh Ratings and Power Output
The mAh rating of the battery can affect your top-speed performance.
The higher capacity battery packs experience less voltage drop under
heavy load than low mAh rated packs. The higher voltage potential
allows increased speed until the battery begins to become discharged.
RUNNING IN WET CONDITIONS
Your new Traxxas model is designed with water-resistant features to
protect the electronics in the model (receiver, servos, electronic speed
control). This gives you the freedom to have fun driving your model
through puddles, wet grass, snow, and through other wet conditions.
Though highly water resistant, the model should not be treated as
though it is submersible or totally 100% waterproof. Water resistance
applies only to the installed electronic components. Running in wet
conditions requires additional care and maintenance for the mechanical
and electrical components to prevent corrosion of metal parts and
maintain their proper function.
Precautions
• Without proper care, some parts of your model can be seriously
damaged due to contact with water. Know that additional
maintenance procedures will be required after running in wet
conditions in order to maintain the performance of your model. Do
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20 •STAMPEDE 4x4 VXL
not run your model in wet conditions if you are not willing to accept
the additional care and maintenance responsibilities.
• Not all batteries can be used in wet environments. Consult your battery
manufacturer to see if their batteries can be used in wet conditions. Do
not use LiPo batteries in wet conditions.
• The Traxxas TQi transmitter is not water resistant. Do not subject it to
wet conditions such as rain.
• Do not operate your model during a rain storm or other inclement
weather where lightning may be present.
• Do not allow your model to come in contact with salt water (ocean
water), brackish water (between fresh water and ocean water), or
other contaminated water. Salt water is highly conductive and highly
corrosive. Use caution if you plan to run your model on or near a beach.
Before Running Your Vehicle in Wet Conditions
1. Consult the section “After Running Your Vehicle in Wet Conditions”
before proceeding. Make sure you understand the additional
maintenance required with wet running.
2. The wheels have small holes molded in to allow air to enter and exit
the tire during normal running. Water will enter these holes and get
trapped inside the tires if holes are not cut in the tires. Cut two small
holes (3mm or 1/8” diameter) in each tire. Each hole should be near the
tire center-line, 180 degrees apart.
3. Confirm that the receiver box O-ring and cover are installed correctly
and secure. Make sure the screws are tight and the blue O-ring is not
visibly protruding from the edge of the cover.
4. Confirm that your batteries can be used in wet conditions.
5. Use lower gearing (smaller pinion gears, as low as 9T or spur gear as
large as 54T) when running in mud, deep puddles, snow, or other
similar situations that will restrict the tires and put much higher loads
on the motor.
Motor Precautions
• Velineon motor life can be greatly reduced in mud and water. If the
motor gets excessively wet or submerged, use very light throttle (run the
motor slowly) until the excess water can run out. Applying full throttle to
a motor full of water can cause rapid motor failure. Your driving habits
will determine motor life with a wet motor. Do not submerge the motor
under water.
• Do not gear the motor by temperature when running in wet conditions.
The motor will be cooled by water contact and will not give an accurate
indication of appropriate gearing.
• Use special care when operating your model in muddy conditions. Stop
operating your model if it appears to be straining due to the tackiness of
the mud or build-up of mud on the chassis. Do not allow mud to collect
on the motor or pack around the motor.
After Running Your Vehicle in Wet Conditions
1. Drain the tires by spinning the tires at high speed to “sling” the water
out. One way to do this is to make several high-speed passes on a flat,
dry surface (if possible).
2. Remove the batteries.
3. Rinse excess dirt and mud off the truck with low-pressure water, such
as from a garden hose. Do not use a pressure washer or other high-
pressure water. Avoid directing water into the bearings, differentials,
etc.
4. Blow off the truck with compressed air (optional, but recommended).
Wear safety glasses when using compressed air.
5. Remove the wheels from the truck.
6. Spray all the bearings, drivetrain, and fasteners with WD-40® or similar
water-displacing light oil.
7. Let the truck stand or you may blow it off with compressed air. Placing
the truck in a warm, sunny spot will aid drying. Trapped water and oil
will continue to drip from the truck for a few hours. Place it on a towel
or piece of cardboard to protect the surface underneath.
8. As a precautionary step, remove the sealed receiver box cover. While
unlikely, humidity or tiny amounts of moisture or condensation may
enter the receiver box during wet running. This can cause long-term
problems with the sensitive electronics in the receiver. Removing the
receiver box cover during storage allows the air inside to dry. This step
can improve the long-term reliability of the receiver. It is not necessary
to remove the receiver or unplug any of the wires.
9. Additional Maintenance: Increase your frequency of disassembly,
inspection, and lubrication of the following items. This is necessary
after extended wet use or if the vehicle will not be used for an extended
period of time (such as a week or longer). This additional maintenance
is needed to prevent any trapped moisture from corroding internal
steel components.
• Stub axle housing bearings: Remove, clean, and re-oil the bearings.
• Differentials: Remove, disassemble, clean, and re-grease the
differential components. Use a light coating of wheel bearing grease
(from an auto parts store) on the metal gear teeth. Refer to your
exploded view diagrams for help with disassembly and reassembly.
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