Traxxas 3351 User Manual

extreme brushless powerextreme brushless power

extreme brushless power systemextreme brushless power system

owner’s manual

PART #3350X

2 • VELINEON POWER SYSTEM

3 BEFORE YOU PROCEED

Traxxas
1100 Klein Road

4 SAFETY PRECAUTIONS

Plano, Texas 75074
Phone: [phone]

6 INTRODUCTION

7 ANATOMY OF THE VXL-3S

AND VELINEON 3500

8 TERMINOLOGY

10 VELINEON SYSTEM

SPECIFICATIONS

11 VELINEON SYSTEM

INSTALLATION

18 VXL-3S SETUP AND

OPERATION

24 GEARING OPTIONS

26 MOTOR OPTIONS

27 TROUBLESHOOTING

Toll-free 1-888-TRAXXAS

Traxxas U.K.
P.O. Box 1128
Winterbourne, Bristol
BS36-2SH
England
Phone: [phone]

Internet
Traxxas.com
E-mail: [e-mail]

Entire contents ©2009 Traxxas.
Traxxas, Ready-To-Race, Ready­To-Win, Rustler, Bandit, Stampede

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 identication. No part
of this manual may be reproduced
or distributed in print or electronic
media without the express written
permission of Traxxas. Specications
are subject to change without notice.

VE LI NE ON P OW ER S YS TE M • 3

Before You Proceed

Carefully read and follow all instructions in this and any accompanying materials to prevent serious damage
to your system. Failure to follow these instructions will be considered abuse and/or neglect.

Before using your system, look over this entire manual and examine the system 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 system for return or exchange after it has been used.

Support

If you have any questions about your system 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 www.Traxxas.com/support. You may also e-mail customer support with your question at
[e-mail]. 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 satised
with your new system!

4 • VELINEON POWER SYSTEM

Safety Precautions

VXL-3s Electronic Speed Control

• Water and Electronics Do Not Mix: Your VXL-3s
brushless power system is waterproof for use in mud,
snow, puddles and other wet conditions. Make certain
the other components of your model are waterproof
or have sufficient water resistance before driving in
wet conditions.

• 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.

Batteries and Battery Charging

The Velineon Power System

that must be handled with care for safety and long battery
life. Make sure to read and follow all instructions and
precautions that were provided with your battery packs
and your charger. It is your responsibility to charge and care
for your battery backs properly. In addition to your battery
and charger instructions, here are some more tips to keep
in mind.

• Never leave batteries to charge unattended.

• Remove the batteries from the model while charging.

• Allow the battery packs to cool off between runs
(before 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.

• 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.

• Children should have responsible adult supervision when
charging and handling batteries.

uses rechargeable batteries

VE LI NE ON P OW ER S YS TE M • 5

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 16 use or
handle LiPo battery packs without the supervision of a
knowledgeable and responsible adult.

The VXL-3s electronic speed control is able to use LiPo

batteries with nominal voltage not to exceed 11.1 volts
(3S packs) volts. 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

Safety Precautions

supplied by the battery manufacturer and the charger
manufacturer for proper charging, use, and storage of
LiPo batteries. 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 products.

If you have questions about LiPo battery usage, please
consult with your local hobby dealer or contact the battery
manufacturer.

6 • VELINEON POWER SYSTEM

Introduction

Thank you for purchasing the new Velineon™ Brushless Power System. The Velineon Power System lets you
experience the best that brushless motor technology has to offer. Incredible speed, efcient operation, long run
times, and low-maintenance operation are just some of the benets. We are condent you will be rewarded with
high-speed performance in a durable, long-lasting product.

This manual contains the instructions you will need to operate, and maintain your system. We want you to
feel condent that you own one of the best-performing products 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 products are about
experiencing total performance and satisfaction, not just with your system, but also with the company that stands
behind it.

We know you’re excited about getting your new system installed, but it’s very important that you take some time
to read through the Owner’s Manual. This manual contains all the necessary set-up and operating procedures that
will allow you to unlock the performance potential that Traxxas engineers designed into your system. Also be sure
to read and follow the precautions and warnings in this manual and on any labels or tags attached to your system.
They are there to educate you on how to operate your system safely and also get maximum life and performance
from your system.

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 system!

VE LI NE ON P OW ER S YS TE M • 7

Anatomy of the VXL-3s and Velineon 3500

Traxxas High-Current

Connector (Male)

to Battery

(see page 17)

to Motor

Motor Cap

Bullet

Connector

Rotor

(Magnet)

to ESC

Cooling Fan
Connector

(for optional use,
see page 17)

LED

Auxiliary Port

(for optional use)

Heat Sink

EZ-Set Button
(On/Off Button)

Receiver cable
(RX wire)

Windings
(Coils)

Ball Bearings

Motor Shaft

8 • VELINEON POWER SYSTEM

Terminology

Please take a moment to familiarize yourself with these
terms. They will be used throughout this manual.

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 ow through

the electronics, usually measured in amps. If you look
at wire like a garden hose, current is a measure of how
much water is owing 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 efciently 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.

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 10-turn, 3500 kV
motor optimized for the best speed and efciency in
lightweight 1/10 scale models.

LiPo - Abbreviation for Lithium Polymer. Rechargeable

LiPo battery packs are known for their special
chemistry that allows extremely high energy density
and current handling in a compact size. These are
high performance batteries that require special care
and handling. 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.

VE LI NE ON P OW ER S YS TE M • 9

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.

Resistance - In an electrical sense, resistance is a

measure of how an object resists or obstructs the ow
of current through it. When ow 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 benet 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.

Solder Tabs - Accessible, external contacts on the motor

that allows for easy wire replacement. The Velineon
3500 is equipped with solder tabs.

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.

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 ow in the hose, voltage
corresponds to the pressure that is forcing the water
through the hose.

10 • VELINEON POWER SYSTEM

Velineon System Specifications

VXL-3s Specifications:
Input voltage: 4.8 - 11.1V (4 - 9 cells NiMH or 2S - 3S LiPo)
Supported motors: Brushed / Brushless / Sensorless brushless
Motor limit: None
Continuous current: 200A
Peak current: 320A
BEC voltage: 6.0V DC
Transistor type: MOSFET
On-resistance: 0.00075 Ω Max (0.006/8 FETs)
PWM frequency: 12,000Hz
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
Case size (l/w/h): 55mm (2.19")/ 39mm (1.54")/ 33mm (1.3")
Weight: 109g (3.84oz)

VXL-3s Profile Selection:

Prole #1 (Sport Mode): 100% Forward, 100% Brakes, 100% Reverse
Prole #2 (Race Mode): 100% Forward, 100% Brakes, No Reverse
Prole #3 (Training Mode): 50% Forward, 100% Brakes, 50% Reverse

Velineon 3500 Specifications:
Type: Sensorless brushless
RPM/volt: 3500 (10-turn)
Magnet type: Ultra High-Temperature

Sintered Neodymium

Connection type: TRX 3.5mm bullet connectors
Wire size: 12-gauge Maxx
Current Ratings: 65A constant; 100A peak/burst
Max RPM: 50,000
Diameter: 36mm (1.42”) (540 size)
Length: 55mm (2.165”)
Weight: 262g (9.24oz)

®

Cable w/ solder tabs

VE LI NE ON P OW ER S YS TE M • 11

Velineon System Installation

The following instructions cover installation of the Velineon System in an XL-5 equipped Rustler, Bandit, Stampede, or Slash.

If your vehicle included a YELLOW XL-5 speed control as stock equipment, be aware that your model does NOT
have waterproof electronics. Although the Velineon system is waterproof, operating your model in mud, water, or
snow will damage your vehicle’s servo and receiver. Do NOT operate your model in wet conditions.

The Velineon System is capable of extreme power, and the drivetrain upgrades below are recommended to increase
the performance and durability of the XL-5 equipped model being upgraded to Velineon Power. All of the items listed
as “Minimum recommended upgrades” should be added to your model.

Minimum recommended Yellow XL-5 equipped vehicle component upgrades:
2381X Main diff with steel ring gear/ side cover plate/ screws (Bandit, Stampede, Rustler)
2753X Stub axles, rear (2)
4628R Differential output yokes, black (2)/ 3x5mm countersunk screws (2)/ screw pin (2)
3696 Idler gear, steel (30-tooth)

Additional suggested Yellow XL-5 equipped vehicle component upgrades:

3647 Nuts, 4mm flanged nylon locking (steel, serrated) (8)
3752 Stub axle carriers (2) (requires 5x11x4mm bearings)
3736 Steering blocks, left & right (2) (requires 5x11x4mm bearings)
5116 Ball bearings, blue rubber sealed (5x11x4mm) (2)

If your vehicle included a BLUE XL-5 speed control as stock equipment, this indicates that your vehicle has
waterproof electronics, and you may operate your vehicle in mud, water, and snow after you have installed your
waterproof Velineon brushless speed control and motor system. Make certain batteries and other components of your
model are waterproof or have sufficient water resistance before driving in wet conditions. Follow all maintenance
steps outlined in your vehicle manual after running your vehicle in wet conditions.

Models originally equipped with a BLUE XL-5 speed control are Brushless Ready and feature all of the items shown
above as standard equipment, except Part #5516 ball bearings. The items do not need to be purchased for your model,
but Part #5516 ball bearings remain a suggested upgrade.

12 • VELINEON POWER SYSTEM

Velineon System Installation

The following instructions show installation in a waterproof (blue XL-5 ESC) model. If your model
has a yellow XL-5 ESC, simply skip the steps that mention the

waterproof receiver box.

Removing the XL-5 system

1. Remove the right rear wheel (passenger rear).

2. Remove the two 3x6mm screws from the gear cover and remove the gear cover (A).

3. Loosen the motor pinion gear set screw (B, yellow arrow) and slide the gear off the

motor shaft. Disconnect the motor wires and loosen the two 3x8mm washerhead
screws until the motor is free of the gearbox (B). Remove the motor.

4. On the waterproof receiver box, remove the wire clamp by

A

removing the two 2.5x10mm cap screws.

5. Remove the waterproof receiver box cover by removing the two
3x10mm cap screws.

6. Remove the speed control’s XL-5 plug from Channel 2 of your
receiver (see wiring diagram, page 15).

7. Remove the two 3x12mm washerhead screws that hold the XL-5
to its mount (C). Remove the XL-5.

C

8. Rustler and Bandit: Remove the four 3x8mm washerhead
screws from the ESC mount. Remove the mount and discard (D).
Stampede: The stock ESC mount will be reused. Proceed to step

2 of Installation of the Velineon System.
Slash: The Slash chassis has mounting holes for the Velineon
System. Proceed to step 2 of Installation of the Velineon System.

Screw Options Note: Other
than the 3x15mm cap screws
for mounting the ESC to the
model plate, all the original
hardware on your model can
be reused. 3x8mm flathead
hex screws are included if you
wish to upgrade your motor
screws to hex hardware.

B

D

VE LI NE ON P OW ER S YS TE M • 13

Installation of the Velineon System:

E

1. Rustler and Bandit: Install the included ESC mounting plate using
the 3x8mm screws (E).

2. Rustler, Bandit, Stampede: Mount the VXL-3s to the mounting
plate using the supplied 3x15mm cap screws (F).
Slash: Mount the VXL-3s directly to the chassis using the

supplied 3x15mm cap screws.

3. Mount the Velineon Motor to the gearbox using the 3x8mm
washerhead screws (or the included flathead hex screws) and

G

tighten finger tight (G, white arrows).

4.

Mount the motor pinion to the motor shaft, make sure to tighten
set screw against the flat portion of the shaft (G, yellow arrow).

5. Set the gear mesh by running a narrow strip of notebook paper
into the gear mesh. Loosen the motor screws and slide the
motor and pinion gear into the spur gear. Tighten the motor
screws and then remove the strip of paper (H).

6. Replace the gear dust cover and the wheel.

7. Connect the Velineon motor wires according to the wiring diagram (see page 14).

8. Plug ESC wires into the receiver (I). Bundle wiring as necessary.

9. Make sure the O-ring is properly seated into the groove in the waterproof receiver box

bottom so that the cover will not pinch it or damage it in any way.

F

H

I

Strip of

Paper

Motor

Screws

14 • VELINEON POWER SYSTEM

Velineon System Installation

10. Place waterproof receiver box top onto waterproof receiver box bottom and install
and tighten the two 3x10mm cap screws securely.

11. Inspect the waterproof box cover to make sure that the O-ring seal is not visible.

12. Arrange the wires neatly using the wire guides on the waterproof receiver box top (J).

Excess ESC and servo wiring should be bundled inside the waterproof receiver box.
Pull out all available antenna wiring from the waterproof receiver box.

13. Apply a small bead of silicone grease (Part # 1647) to the foam
on the waterproof receiver box wire clamp (K).

14. Install the waterproof receiver box wire clamp and tighten the
two 2.5x10mm cap screws securely (L).

15. See page 18 for VXL-3s setup and operation.

K

Motor Wiring Diagram

J

L

VE LI NE ON P OW ER S YS TE M • 15

System Wiring Diagram

Cooling Fan Connector

Antenna

(for optional use,

see page 16)

Receiver

Channel 2
Electronic Speed
Control

Velineon System Installation

Traxxas High-Current

Connector (Male)

to Battery

(

see page 17)

Models with yellow XL-5 (non-waterproof)

Channel 1
Channel 2

Not Used

Channel 1
Steering Servo

Channel 2
Electronic
Speed Control

*Not Used

Channel 1
Steering Servo

Velineon 3500

Brushless Motor

Motor

Cap

16 • VELINEON POWER SYSTEM

Velineon System Installation

Installing the Velineon System in other Models

Some users may wish to experience the power of the

Velineon Brushless Power System in other applications.
Here are some tips:

• The VXL-3s does not use a conventional on/off switch.

Pressing the EZ-Set button on the speed control turns it
on and off. It is not necessary to install an on/off switch
into the wiring harness.

• Mount the speed control so that none of the power

components (wiring, motor, ESC) contacts any part of the
radio system, particularly the antenna wire. The receiver
should be mounted so the antenna wire can be extended
as far away from the speed control as possible. The
antenna wire should be extended vertically in the mast
and not wrapped on the chassis under the body. Excess
antenna wire should not be coiled on the chassis. Servo
cables and the antenna wire should not cross or come
in contact with any of the motor or battery wires. These
steps will help reduce the possibility of radio interference.

• If you are planning to operate the system at the higher

limits of its capabilities, cut ventilation holes into the
body for the heat sinks. Monitoring temperatures will
extend the lives of the batteries and motors and proper

ventilation and cooling will prevent premature thermal
shutdown. See page 17 for accessories that will help you
monitor temperatures and cool your components.

• Mount the speed control where it will be protected from
crash damage. Also protect the speed control from dirt
and debris kicked up by the tires.

• Mount the speed control where you will have easy access
to the plugs and the on/off (EZ-Set) button without having
to remove the body.

• Graphite or metal chassis have been known to transmit
radio noise generated by the motor. If the receiver
is to be mounted on the chassis, position it so the
crystal and antenna are as far away from the chassis as
possible. This may require you to mount the receiver on
its side. This will reduce the chance of picking up radio
interference from the motor.

•

For installations without using the servo
mounting plate, the VXL-3s can be
installed with double-sided servo tape.
The screw bosses may need to be cut from
the case with a pair of side cutters to allow
the VXL-3s to fit in non-Traxxas models. When mounting

VE LI NE ON P OW ER S YS TE M • 17

the speed control with double-sided servo tape, clean both
application surfaces thoroughly with alcohol. The surfaces
must be perfectly clean for maximum adhesion.

Traxxas High Current Connector

Your system is equipped with the

Traxxas High-Current Connector.
Standard connectors restrict current
ow and are not capable of delivering
the power needed to maximize the
output of the Velineon Brushless Power system.

The Traxxas connector’s gold-plated terminals with a

large contact surfaces ensure positive current ow with
the least amount of resistance. Secure, long-lasting, and
easy to grip, the Traxxas connector is engineered to
extract all the power your battery has to give.

To run this system, your batteries must be equipped

with Traxxas High-Current Connectors. Batteries can
either be purchased new with Traxxas connectors
installed or Traxxas connectors can be purchased to
install on battery packs you already own. For best
performance, your system requires NiMH battery packs
that have cells rated for high discharge and use high­quality, low-resistance assembly techniques. Cheaply
made battery packs do not retain their performance

Velineon System Installation

characteristics after repeated uses in high-powered
electric applications. They will lose their punch and
run time and may require frequent replacement. In
addition, poor-quality, high-resistance cell connectors
could fail, requiring disassembly and repair. The main
goal is to reduce all sources of high resistance in the
pack. This includes the connector, the wire, and the
bars attaching the cells together. High pack resistance
will create additional heat and rob you of the full power
the cells are capable of producing.

VXL-3s Accessories

Temperature gauge - An on-board
temperature gauge such as the Traxxas
Part #4091 can aid you in monitoring
your motor temperature. Generally, try
to keep your motor below 200° F.

Heat sink cooling fan - The VXL-3s is
equipped with an additional connector
to supply power to an optional heat
sink cooling fan (Traxxas Part# 3340).
The optional heat sink cooling fan can
assist in cooling the VXL-3s in high
current motor applications.

18 • VELINEON POWER SYSTEM

VXL-3s Setup and Operation

Traxxas TQ Radio Systems

Before attempting to program your VXL-3s, it is important
to make sure your TQ 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:

1. Set the throttle neutral switch to the 50/50 setting.
This adjusts the transmitter’s throttle trigger throw
to 50% for throttle and 50% for braking and reverse.
Experienced users may wish to use the 70/30 setting if
more broad proportional control is desired in forward
than with braking and reverse. This might be desirable
in a racing environment where reverse is disabled.

2. Set the throttle trim control to the middle “0” setting.

3. Set the Channel 2 servo reversing switch to the left

position. Do not change the position of any of the servo
reversing switches after programming the VXL-3s.

4. You are now ready to program your speed control.

Aftermarket (Non-Traxxas) Transmitters

The following instructions are provided as a general
reference only for those who are using non-Traxxas
transmitters. Consult your transmitter’s instructions for
information on how to change the settings.

1. Set the High ATV (adjustable travel volume) or EPA
(end point adjustment) to the maximum setting. This
is the amount of servo throw at full throttle.

2. Set the Low ATV, EPA or ATL (low side only trim
adjustment) to the maximum setting. This is the
amount of servo throw at full brakes or reverse.

3. Set the throttle trim to the middle (neutral setting).

4. Set the throttle channel reversing switch to either

position. Do not change the switch position after
programming.

5. Set the trigger throw adjustment to 50% throttle and
50% brake (either mechanical or electronic).

6. Set the exponential setting (if equipped) to the zero or
fully linear setting.

Aftermarket Receivers

The VXL-3s is compatible with most
aftermarket receivers. By removing
the tab on the edge of the power
connector, the VXL-3s can be plugged
directly into some models of Futaba
Airtronics®, Hitec®, and JR® receivers.
Please refer to the manufacturer’s

®

,

VE LI NE ON P OW ER S YS TE M • 19

wiring diagrams that came with your receiver. On the
VXL-3s, the red wire is positive, the black wire is negative,
and the white wire is the control wire. Warning: On
some older Airtronics® radio systems, the positive and
negative terminals are opposite of the VXL-3s and an
adapter is required. Crossing the red (+) and black (-)
wires could damage the receiver and the VXL-3s. Study
the manufacturer’s wiring diagrams closely, or consult
your hobby dealer.

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.

VXL-3s Setup and Operation

The electronic speed control is factory set with Low-Voltage
Detection activated. Low-Voltage Detection should be
disabled when using NiMH batteries. Never use LiPo

batteries while Low-Voltage Detection is disabled.

Verify that Low-Voltage Detection is activated:

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 green, then Low-Voltage Detection
is ACTIVATED). If the LED is solid red, then the Low-
Voltage Detection is DISABLED (not safe to use LiPo
batteries).

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.

1

2

20 • VELINEON POWER SYSTEM

VXL-3s Setup and Operation

To activate Low-Voltage Detection (LiPo setting):

1. Make sure the LED on the VXL-3s is

1

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”

2

musical tone will be emitted from
the motor.

3. Low-Voltage Detection is now ACTIVATED.

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

B

button (A). The LED will rst
turn green and then red.
Release the EZ-Set button.

A

Green then Red

Once Red

4. When the LED blinks RED

C

ONCE. Pull the throttle trigger
to the full throttle position and
hold it there (B).

5. When the LED blinks RED

Twice Red

D

TWICE. Push the throttle trigger to
the full reverse and hold it there (C).

6. When the LED blinks GREEN ONCE,

Once Green

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).

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 driven wheels are off the ground. Disconnect
motor wires “A” and “C”, this will assure 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
ACTIVATED (factory default) and the LED shines green. If
Low-Voltage Detection is DISABLED, the LED will shine red
instead of green in steps 1-7 below.

VE LI NE ON P OW ER S YS TE M • 21

1. With the transmitter on, press and release the EZ-Set

button. The LED will shine green. 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 green.

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 green.

4. Return the throttle trigger to neutral. The LED will shine

green.

5. Move the throttle trigger forward again to engage reverse

(Prole #1). The LED will turn off. Once full reverse power is
reached, the LED will illuminate green.

6. Return the throttle trigger to neutral. (Note: There is

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).

*patent pending

VXL-3s Setup and Operation

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.

Prole Description

Prole #1 (Sport Mode):
100% Forward, 100% Brakes, 100% Reverse
Prole #2 (Race Mode):
100% Forward, 100% Brakes, No Reverse
Prole #3 (Training Mode*):
50% Forward, 100% Brakes, 50% Reverse

Selecting Sport Mode

(Prole #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 Prole #).

A

Green to Red to Off

22 • VELINEON POWER SYSTEM

VXL-3s Setup and Operation

3. When the LED blinks red

B

C

once, release the EZ-Set
button.

4. The LED will blink and
then turn solid green
(Low-Voltage Detection ACTIVE) or red

One blink Red

Release

D

(Low-Voltage Detection DISABLED). The
model is ready to drive.

Selecting Race Mode
(Prole #2: 100% Forward, 100% Brakes, No Reverse)

1. Connect a fully charged

A

Solid Green

B

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 to Red to Off

C

Two blinks Red

D

green, then solid red and
then begins blinking red
(indicating the Prole #).

Release

Solid Green

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.

Selecting Training Mode
(Prole #3: 50% Forward, 100% Brakes, 50% Reverse)

1. Connect a fully charged

A

B

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 to Red to Off

C

Three blinks Red

D

green, then solid red and
then begins blinking red
(indicating the Prole #).

Release

Solid Green

3. When the LED blinks red three times, release the
EZ-Set button.

4. The LED will blink and then turn solid green (Low­Voltage 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.

VE LI NE ON P OW ER S YS TE M • 23

VXL-3s Setup and Operation

VXL-3s LED Codes and Protection Modes

• Solid Green: VXL-3s power on light. Low-Voltage Detection is ON (LiPo setting).

• Solid Red: VXL-3s power on light. Low-Voltage Detection is OFF (NiCad/NiMH setting).

• 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.

• 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.

• 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 failsafe 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 is incorrectly set. Adjust the Throttle Trim to
the middle “0” setting.

24 • VELINEON POWER SYSTEM

Gearing Options

Battery choice and gearing determine the speed of your model. The following gearing options cover Traxxas Rustler,
Bandit and Stampede models. For other applications, refer to the model manufacturer’s documentation.

Changing the gearing allows you to fine tune the speed of
the model and control the temperatures of the battery pack
and motor. Use a lower gear ratio (numerically larger) to
reduce current draw and temperatures. Use a higher gear ratio
(numerically lower) to increase
top speed. When using higher
gear ratios, it is important to
monitor the temperatures of the
battery and motor. If the battery is
extremely hot, and/or the motor
is too hot to touch, your model
is probably over-geared and
drawing too much current. This
temperature test assumes that
the model is close to factory stock
weight and operates freely with
no excessive friction, dragging, or
binding, and the battery is fully
charged and in good condition.

Bandit 35+mph 45+mph 65+mph 70+mph

Rustler 35+mph 45+mph 65+mph 70+mph

Speed

Stampede 30+mph 40+mph 60+mph 65+mph

Bandit

Rustler

Gearing

Stampede

Battery 6-cell NiMH 7-cell NiMH 3S 20C LiPo 3S 20C LiPo

Nominal Voltage 7.2V 8.4V 11.1V 11.1V

mAh 3000+ mAh 4000+ mAh 4000+ mAh 8000+ mAh

Skill Level 1 2 5 5

All models equipped with Velineon Power System and upgraded drivetrain components.

26-tooth pinion

76-tooth spur

25-tooth pinion

83-tooth spur

19-tooth pinion

86-tooth spur

Use the following formula to calculate the overall ratio:

# Spur Gear Teeth

# Pinion Gear Teeth

28-tooth pinion

76-tooth spur

28-tooth pinion

83-tooth spur

25-tooth pinion

86-tooth spur

x 2.72 = Final Gear Ratio

33-tooth pinion

76-tooth spur

31-tooth pinion

76-tooth spur

26-tooth pinion

86-tooth spur

33-tooth pinion

76-tooth spur

31-tooth pinion

76-tooth spur

30-tooth pinion

83-tooth spur

VE LI NE ON P OW ER S YS TE M • 25

Gearing Options

Gearing Compatibility Chart

The chart below shows recommended gear combination ranges when using a NiMH battery pack to power a Rustler,
Bandit, or Stampede equipped with the Velineon System and upgraded drivetrain components. In the red range, use
a battery that has a continuous rating of at least 70A.

Spur Gear

76 83 86 90

12

- - 19.50 20.40

13

- - 18.01 18.82

14

- - 16.70 17.49

15

- 15.04 15.58 16.32

16

- 14.12 14.63 15.31

17

- 13.27 13.76 14.39

18

Pinion Gear

- 12.54 13.00 13.60

19

- 11.89 12.32 12.89

20

- 11.28 11.69 12.24

21

- 15.60 11.14 11.66

22

9.38 10.25 10.63 11.12

23

8.97 9.82 10.17 10.63

24

25

26

27

28

29

30

Pinion Gear

31

32

33

34

35

Spur Gear

76 83 86 90

8.62 9.41 9.74 10.20

8.27 9.03 9.36 9.79

7.94 8.67 9.00 -

7.64 8.35 8.67 -

7.37 8.05 8.35 -

7.12 7.78 8.08 -

6.88 7.53 - -

6.66 7.29 - -

6.47 7.04 - -

6.26 - - -

6.09 - - -

5.90 - - -

Use NiMH batteries with:

Bandit, Rustler or Stampede with
Velineon System

Only Bandit and Rustler with
Velineon System

Only Bandit with Velineon System

Do Not Use NiMH (battery
must have a continuous rating
of at least 70A. Consult with
your hobby dealer or battery
manufacturer.)

26 • VELINEON POWER SYSTEM

Motor Options

The VXL-3s electronic speed control is capable of controlling brushed,
brushless, and sensored brushless motors. The VXL-3s auto-detects the
motor type and has numerous built-in safeguards to prevent damage
from miswiring or damaged wiring.

Sensored brushless motors

The VXL-3s is fully compatible with sensored brushless motors. Sensor
motors use an additional sensor installed in the motor to communicate
rotor position to the speed control. The VXL-3s features a covered
auxiliary port that accepts aftermarket motor sensors on the front face
of the unit. The VXL-3s has built-in Sensor Motor Backup Protection
to prevent damage if the sensor leads or phase leads become
disconnected. If a sensor lead becomes damaged or is disconnected,
the VXL-3s automatically switches to sensorless brushless operation.
The VXL-3s also features Sensor Phase
Detection. When a sensored brushless motor
is connected, the VXL-3s will check for proper
wiring. If the motor phase wiring is incorrect,
the VXL-3s will not apply power to the motor
until it is wired correctly.

Brushed motors

For the ultimate in versatility, the VXL-3s has no motor limit when
used with a brushed motor. This allows you to use any readily
available 540 or 550 size brushed motors in your VXL-3s equipped
vehicle. Always be sure to follow all break in and maintenance
instructions set forth by the motor manufacturer. The VXL-3s
automatically detects what kind of motor it is connected to so no
programming actions are required to use brushed motors. Simply
be sure to properly connect the motor to the speed control as shown.

• Motor positive (+) should be connected to phase A (blue).

• Phase B is not used.

• Motor negative (-) should be connected to phase C (white).

If the wiring is reversed, the motor will operate in reverse. If the
motor is wired incorrectly (using phases A+B or B+C), the VXL-3s will
send short pulses to the motor and turn off the LED indicating a fail
safe mode. It will not return to normal operation until wired properly.

Sensorless brushless motors

Sensorless motors are the easiest and most reliable brushless motor
type. The VXL-3s is optimized to deliver the smoothest possible
sensorless motor performance. The Velineon 3500 is a sensorless
brushless motor. The wiring (phase alignment) of the motor determines
its direction of rotation. Refer to the wiring diagram on page 15.

VE LI NE ON P OW ER S YS TE M • 27

Troubleshooting

This guide describes possible speed control problems, causes, and simple
solutions. Check these items before contacting Traxxas.

Steering channel works but the motor will not run:

• The speed control has thermally shut down. Allow the speed control to
cool down. Use a milder motor or a smaller pinion gear. Check the drive
train for restrictions. Check the motor connections. Check the motor.

• Make sure the speed control is plugged into the throttle channel of the
receiver. Check operation of the throttle channel with a servo.

• Bad battery or motor. Check the operation with known good battery
and motor.

• VXL-3s: Possible internal damage. Return the VXL-3s to Traxxas
for service.

Motor runs backwards:

• Motor wired backwards - Check the wiring and correct.

• Transmitter incorrectly set, see page 20.

Motor runs as soon as the battery is plugged in:

• Internal damage, return VXL-3s to Traxxas for service.

VXL-3s will not go into programming mode:

• Make sure the VXL-3s is plugged into Channel 2 (the throttle channel)
on the receiver. If it is plugged
into the battery terminal, it will not go into programming mode.

• Be sure the VXL-3s is turned off before trying to program or
select a profile.

• Unplug battery, reconnect, and repeat programming instructions.

• Check if transmitter is turned on.

Receiver glitches/throttle stutters during acceleration:

• The receiver or antenna is too close to power wires or the batteries.

• Bad connections - Check the wiring and connectors.

• Motor worn - Replace the motor.

• Excessive current to motor (over-geared motor) - Use a smaller
pinion gear.

• Battery voltage low. Recharge and/or verify
charged status.

• Disconnected brushless motor lead. Reconnect according to appropriate
wiring diagram.

Model runs slowly / slow acceleration:

• Check the motor and battery connectors.

• Check to see if VXL-3s is in Profile #3 (50% throttle)

• Bad battery or motor. Check the operation with known good battery
and motor.

• Incorrect transmitter or speed control adjustment. Refer to the
“Transmitter Setup” and “VXL-3s Setup Programming” sections.

• VXL-3s is in Thermal Shutdown Protection. Allow to cool and check for
proper gearing.

• VXL-3s has entered Low-Voltage Protection.

Steering servo does not work:

• Check the wires, radio system, crystals, battery and motor connectors,
and the battery pack.

• Possible internal damage. Test the servo on channel 2 of the receiver or
in another model. Return the servo to Traxxas for service.

Model will not go in reverse:

• Make sure the throttle trim is in the correct position (LED on VXL-3s
should be lit solid at neutral throttle)

• Check for correct VXL-3s profile (Profile #2 does not have reverse).

• If brushed motor is being used, verify proper connection to VXL-3s.
Correct if necessary.

extreme brushless powerextreme brushless power

extreme brushless power systemextreme brushless power system

1100 Klein Road, Plano Texas 75074

1-888-TRAXXAS

091201 KC1211-R01