Traxxas Raptor R 4x4 Ultimate Edition Owner's Manual

Introduction

This manual provides instructions for the operation and maintenance of your Traxxas model, ensuring years of enjoyment. Traxxas models are designed for performance and are backed by a professional support team dedicated to customer satisfaction. Please read this manual thoroughly before operating your model.

Important Safety Information: Warnings, helpful tips, and cross-references are marked with icons throughout this manual. Pay close attention to these indicators.

• Warning: Important safety information regarding personal safety or preventing damage to the model and its components.
• Tip: Special advice from Traxxas to make things easier and more enjoyable.
• Reference: Points to a page with related information.

Model Registration

To help Traxxas serve you better, please register your product online at Traxxas.com/register within 10 days of purchase.

Support: For questions about the model or its operation, contact Traxxas technical support at 1-888-TRAXXAS (1-888-872-9927). Support is available 7 days a week. You can also find support at Traxxas.com or by emailing support@Traxxas.com. Join the online community at Traxxas.com.

Quick Start: This manual includes a quick start guide to get your model operational quickly. Experienced RC enthusiasts will find it useful for a fast overview. Please read the entire manual for important safety, maintenance, and setup procedures. Begin on page 9.

Why the Raptor R 4x4 is Ultimate

The Raptor R 4X4 Ultimate elevates the Traxxas Pro Scale® experience with the power of the Velineon® VXL-4s™ and the imposing 540XL brushless motor. It features an ultra-durable drivetrain and aluminum reinforcements for maximum strength and durability. Take corners like a pro with the Raptor R 4X4 Ultimate's PTFE-coated aluminum GTR shocks. The TQi radio system with the Traxxas Link wireless module and factory-installed telemetry allow for real-time data capture and redefine accessibility and versatility in adjustments.

Key Features:

• Velineon VXL-4s Power System
• Metal Gear Servo
• Aluminum C-Hubs and Steering Knuckles
• Aluminum Rear Hub Carriers
• BFGoodrich® All-Terrain™ T/A® Tires on Black Chrome Wheels
• Blue Anodized, PTFE-Coated GTR Shocks

FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to 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.

Industry Canada (IC): This Class B digital apparatus complies with Canadian ICES-003 and RSS-210.

Radio Frequency (RF) Exposure Statement: This equipment complies with FCC and Industry Canada RF exposure limits for an uncontrolled environment. Maintain a minimum distance of 20 cm between the radiator and your body.

Safety Precautions

All instructions and precautions in this manual must be strictly followed for safe operation. Traxxas wants you to use your new model safely. Responsible use ensures fun and safety for everyone. Failure to follow safety instructions may result in property damage and serious injury.

Important Points to Remember:

• Your model is not intended for use on public roads or in crowded areas where it could interfere with or obstruct traffic.
• Never operate the model in a crowd. It is fast and can cause injury if it collides with someone.
• As a radio-controlled model, it is subject to radio interference from many sources. Maintain a safety margin around the model to prevent collisions.
• The motor, battery, and speed control may become hot during use. Avoid burns.
• Do not operate your model at night or when visibility is obstructed.
• Use common sense at all times.

Speed Control: The electronic speed control (ESC) is a powerful device. Observe these precautions to prevent damage:

• Always disconnect the battery when the speed control is not in use.
• Isolate exposed wires with heat-shrink tubing to prevent short circuits.
• Always turn on the transmitter before operating the speed control to prevent erratic operation.
• Beware of burns: The speed control and motor can become extremely hot. Allow them to cool before touching. Ensure adequate airflow for cooling.
• Use original connectors: Do not change battery and motor connectors. Improper wiring can cause fire or damage.
• Voltage reversal is prohibited: The speed control is not protected against reverse polarity.
• Always observe the speed control's upper and lower limits as specified in the manual. If your speed control uses two batteries, do not mix battery types or capacities. Use batteries of the same voltage and capacity. Mismatched batteries can damage the batteries and the speed control.

WARNING: FIRE HAZARD! This vehicle requires LiPo batteries. Charging and discharging LiPo batteries can cause fires, explosions, serious injury, and property damage if not performed according to the manufacturer's instructions. LiPo batteries pose a significant fire risk if not handled properly. Traxxas recommends that children under 18 do not use or handle LiPo batteries without adult supervision. Dispose of used batteries according to instructions.

CAUTION:

• Your model requires LiPo batteries. LiPo batteries have a critical discharge voltage limit that must not be exceeded. The ESC has a built-in low-voltage cutoff that alerts the driver when LiPo batteries reach their critical discharge voltage limit. The driver must stop immediately to prevent the battery from discharging below its safety limit.
• The low-voltage cutoff is only part of a comprehensive LiPo battery safety plan. Users must follow all other instructions provided by the battery and charger manufacturers for charging, use, and storage of LiPo batteries. Ensure you understand how to use LiPo batteries. If you have questions, consult your dealer or the battery manufacturer. All batteries should be recycled at the end of their useful life.
• Use ONLY a Traxxas iD charger to charge Traxxas iD batteries. Use ONLY a LiPo balancing charger with a balancing adapter port to charge LiPo batteries. NEVER use NiMH or NiCad charging chargers or modes for LiPo batteries. Using NiMH or NiCad chargers or modes will damage LiPo batteries and may cause fires, injury, and/or property damage.
• NEVER charge LiPo batteries in series or parallel. Charging batteries in series or parallel can lead to incorrect battery identification by the charger and incorrect charging rates, potentially causing overcharging, cell imbalance, battery damage, and fires.
• ALWAYS inspect LiPo batteries before charging. Ensure there are no loose wires or connectors, damaged wire insulation, damaged battery packaging, impact damage, liquid leaks, swelling (a sign of internal damage), deformed batteries, missing labels, or any other damage or defects. If any of these conditions are found, do not charge or use the batteries. Follow the battery disposal instructions and dispose of them safely.
• Do not store or charge LiPo batteries with or near any other type of battery or batteries, including other LiPo batteries.
• Store and transport LiPo batteries in a cool, dry place. Do not store them in direct sunlight. Do not allow storage temperatures, such as in a car trunk, to exceed 140°F (60°C), as battery cells may be damaged and a fire hazard may exist.
• DO NOT disassemble LiPo batteries or cells.
• DO NOT attempt to assemble your own LiPo batteries from cells.
• ALWAYS ensure that the charger settings exactly match the battery type (chemical composition), specifications, and configuration of the battery being charged BEFORE charging. DO NOT EXCEED the maximum charge rate recommended by the battery manufacturer.
• DO NOT attempt to charge batteries that have an internal charging circuit or protection circuit, batteries whose original manufacturer configuration has been modified, or batteries whose labels are missing or illegible, preventing you from correctly identifying their type and characteristics.
• ALWAYS use a Traxxas iD charger to charge Traxxas iD batteries.
• NEVER allow battery contacts or exposed wires to touch each other. This presents a risk of short circuit and fire.
• When charging or discharging, place the battery (all battery types) in a fire-resistant container on a non-flammable surface such as concrete.
• NEVER charge batteries inside an automobile. NEVER charge batteries while driving.
• NEVER charge batteries on wood, fabric, carpet, or any other flammable material.
• ALWAYS charge batteries in a well-ventilated area.
• KEEP flammable objects and combustible materials away from the charging area.
• NEVER leave the charger and battery unattended while charging or at any time the charger is ON and charging batteries. If there are any signs of malfunction or in case of emergency, unplug the charger from the power source and remove the battery from the charger.
• DO NOT operate the charger in an enclosed space or place objects on the charger or battery.
• If a battery or battery cell is damaged in any way, DO NOT charge, discharge, or use the battery.
• Keep a Class D fire extinguisher nearby in case of fire.
• DO NOT disassemble, crush, short-circuit batteries or cells, and DO NOT expose them to flames or any other fire source. Toxic materials may be released. Rinse in case of contact with eyes or skin.
• If a battery becomes too hot to touch during charging (above 110°F / 43°C), remove the battery from the charger immediately and stop the charging process.
• Allow the battery to cool down between uses (before charging).
• ALWAYS disconnect the charger and remove the battery when not in use.
• ALWAYS disconnect the battery from the speed control when the model is not in use and when it is stored or transported.
• DO NOT disassemble the charger.
• REMOVE the battery from the model or device before charging.
• DO NOT expose the charger to water or moisture. For indoor use only.
• Do not use any type of adapter, modify or change the plug/connector of the battery.
• ALWAYS store batteries securely out of the reach of children and pets. Children should never charge or handle batteries without adult supervision.
• ALWAYS take precautions and use common sense at all times.

Tools, Supplies, and Equipment Required

Your model comes with a set of specialty metric tools. You will need to purchase other items, available from your hobby dealer, to operate and maintain your model.

Tools and Equipment Provided

• 2.5mm Allen Wrench
• 2.0mm Allen Wrench
• 1.5mm Allen Wrench
• Cross Wrench
• Shock Pliers
• Suspension Multi-Tool
• Battery Mounting Post

Required Equipment

• 2S/3S/4S LiPo Battery Pack with Traxxas High-Current Connector*
• Battery Charger*

*Battery type and charger may vary and may not match the images.

Recommended Equipment

These items are not mandatory to operate the model, but it is a good idea to have them in any RC model tool kit:

• Safety Glasses
• Traxxas Ultra Premium Tire Glue, Part #6468 (CA Glue)
• Hobby Knife
• Side Cutters and/or Needle-Nose Pliers
• Philips Screwdriver
• Soldering Iron

Anatomy of the Raptor R 4x4 Ultimate

The diagram below illustrates the various components of the Raptor R 4x4 Ultimate.

• Front Suspension:
• Front Shock Tower
• Front Body Mount (Clips)
• Front Bumper
• Front Suspension Arms
• Steering Linkage
• C-Hub
• Steering Knuckle
• Front Shock Absorber
• Chassis and Drivetrain:
• Chassis
• Transmission Shaft
• Center Differential
• Battery Compartment
• Receiver Box
• ESC (Electronic Speed Control)
• Motor
• Traxxas High-Current Connector
• Drive Shaft
• Pinion Gear
• Spur Gear
• Rear Suspension:
• Rear Shock Tower
• Rear Body Mount (Clips)
• Rear Bumper
• Rear Suspension Arms
• Rear Shock Absorber
• Rear Hub Carrier
• Rear Hub
• Rear Axle
• Radio System:
• Transmitter
• Receiver
• Servo
• Antenna
• Servo Saver
• Other Components:
• Fuel Tank (if applicable)
• Headlights
• LED Indicator Light

Quick Start: Getting Started

The guide below provides an overview of the procedures to get your model running. Look for the Quick Start logo on the Quick Start marked pages.

1. Read Safety Precautions (Pages 4-6). For your safety, be aware that inattention and incorrect use can lead to injury and product damage.
2. Charge the Battery Pack (Page 13). Your model requires a compatible battery and charger (not included). Never use a NiMH or NiCad charger for LiPo batteries.
3. Install Batteries in the Transmitter (Page 13). The transmitter requires 4 AA batteries (sold separately).
4. Install the Battery Pack in the Model (Page 14). This model requires a fully charged battery (not included).
5. Turn on the Radio System (Page 15). Always turn on the transmitter first and turn it off last.
6. Verify Servo Operation (Page 16). Ensure the steering servo operates correctly.
7. Perform Radio System Range Test (Page 16). Follow this procedure to ensure the radio system functions correctly at a distance and is free from interference from external sources.
8. Model Description (Page 10). Apply additional decals as needed.
9. Drive the Model (Page 22). Tips on driving and adjusting your model.
10. Maintain the Model (Page 27). Follow these important steps to maintain the model's performance and keep it in excellent working condition.

Note: The quick start guide does not replace the operating instructions available in this manual. Please read the entire manual to familiarize yourself with all operating and maintenance instructions for your model.

TQi Radio System & Velineon Brushless Power System

Introduction: Your model includes the latest Traxxas TQi 2.4GHz transmitter with Traxxas Link Model Memory. The user-friendly design of the transmitter provides instant fun for RC enthusiasts and offers a range of professional tuning features for advanced users or anyone interested in pushing their model's performance. Steering and throttle channels are adjustable with Exponential, Limit, and Secondary Trim functions. It also features dual-rate steering and braking. Many advanced functions are controlled by the multi-function button, which can be programmed to control various functions. Detailed instructions (page 32) and the menu tree (page 36) in this manual will help you understand and use the advanced features of the new TQi radio system. For additional information and how-to videos, visit Traxxas.com.

Radio System and Electronics Terminology: Familiarize yourself with the terms used for radio and electronic systems. They will be frequently referenced throughout this manual. A detailed explanation of the terminology and functions of your new TQi radio system begins on page 32.

• Sensored: A sensored motor is a type of brushless motor that uses an internal sensor to communicate rotor position data to the ESC. The VXL-4s ESC can utilize sensored motors where advantageous for its applications (e.g., certain specialized racing classes).
• Frequency Band: The radio frequency used by the transmitter to send signals to the model. This model operates on 2.4GHz direct-sequence spread spectrum modulation.
• BEC (Battery Eliminator Circuit): The BEC can be located in the receiver or the ESC. This circuit powers the receiver and servos from the model's main battery pack, eliminating the need for a separate 4-AA battery pack for the radio equipment.
• Cogging: Cogging is sometimes associated with brushless motors. Generally, it is a slight hesitation that may be felt when accelerating from a standstill. It occurs for a very brief period while the ESC's control circuits synchronize with the motor. The VXL-4s ESC is optimized to eliminate cogging.
• Current: Current is a measure of the flow of electricity through electronic devices, typically expressed in amperes. If you associate an electrical wire with a garden hose, current indicates how much water is flowing through the hose.
• ESC (Electronic Speed Control): The ESC is the electronic motor controller located inside the model. The VXL-4s ESC uses advanced circuitry for precise digital proportional control of acceleration. ESCs use energy more efficiently than mechanical controllers, allowing batteries to last longer. ESC circuitry prevents loss of steering and throttle control as batteries discharge.
• LiPo: Abbreviation for Lithium Polymer. Rechargeable LiPo battery packs are known for their special chemical composition, which allows them to handle high energy density and extremely high current in a compact space. They are high-performance batteries that require careful maintenance and handling. LiPo battery packs are for advanced users only.
• mAh: Abbreviation for milliampere-hour, a measure of battery pack capacity. The higher the number, the longer the battery will last before needing a recharge.
• 2.4GHz Spread Spectrum Modulation: This model features the latest in radio control technology. Unlike AM and FM systems that operate with frequency crystals and are prone to frequency conflicts, the TQi system automatically selects an open frequency, providing superior resistance to interference and "noise."
• Brushless Motor: A DC brushless motor replaces the commutator and brush mechanism of a traditional motor with intelligent electronic components that sequentially power the electromagnetic windings, producing rotation. Unlike a brushed motor, the windings (coils) of a brushless motor are located on the perimeter of the motor, and magnets are mounted on the rotating shaft of the rotor.
• Neutral Position: The resting position that servos seek when the transmitter controls are at neutral.
• Thermal Protection: Temperature-sensitive electronic components used by the VXL-4s ESC to detect overload and overheating of the transistor circuits. If the sensors detect excessive temperature, the unit will shut down automatically to prevent damage to the electronic components.
• Receiver: The radio unit inside the model that receives signals from the transmitter and relays them to the servos.
• Trim: Fine-tuning the neutral position of the servos by adjusting the steering and throttle trim dials on the transmitter's panel. Note: The multi-function button must be programmed to serve as the throttle trim.
• Resistance: In an electrical sense, resistance is a measure of how an object opposes the flow of current through itself. When flow is restricted, energy is converted to heat and lost. The Velineon electrical system is optimized to reduce electrical resistance and resulting heat loss.
• Rotor: The rotor is the shaft of a brushless motor. In a brushless motor, magnets are mounted on the rotor, and electromagnetic windings are mounted in the motor housing.
• Sensorless: A sensorless motor is a brushless motor that uses advanced data from the ESC to ensure smooth operation. No additional sensors or motor wires are required. The VXL-4s ESC is optimized for sensorless operation.
• Servo: A small motor unit in the model that operates the steering mechanism.
• 2-Channel Radio System: The TQi radio system, consisting of the receiver, transmitter, and servos. The system uses two channels: one to operate the throttle and one to operate the steering.
• kV Rating: Brushless motors are often defined by their kV rating. The kV rating is equal to the motor's no-load RPM when 1 volt is applied. The kV rating increases as the number of turns in the motor's windings decreases. As the kV rating increases, the current draw through the electronic components also increases. The 540XL motor is a 2400 kV motor, optimized for the best speed and efficiency in lightweight 1/10 scale models.
• Voltage: Voltage is a measure of the electrical potential difference between two points, such as between the positive terminal of a battery and ground. To continue the garden hose analogy, if current is the amount of water flowing through the hose, voltage corresponds to the pressure pushing the water through the hose.
• Transmitter: The handheld radio unit that sends steering and throttle instructions to the model.

Important Safety Precautions for the Radio System:

• Do not tie the receiver's antenna wire. Any knot in the antenna wire reduces its range.
• DO NOT cut any part of the receiver's antenna wire. Cutting the antenna reduces its range.
• Extend the model's antenna wire as far as possible to achieve maximum range. It is not necessary to extend the antenna wire outside the body, but avoid wrapping or coiling the antenna wire.
• Do not extend the antenna wire outside the body without protecting it with an antenna tube, otherwise the wire may be cut or damaged, reducing antenna range. We recommend keeping the antenna wire inside the body (in the antenna tube) to eliminate the risk of damage.

Diagram of Model Wiring:

The model is equipped with the latest TQi 2.4GHz transmitter with Traxxas Link Model Memory. The transmitter provides two channels through which it controls throttle and steering. The receiver inside the model has 5 output channels. Your model is equipped with a servo and an electronic speed control.

Installing Batteries in the Transmitter

The 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 latch and sliding the door open.
2. Install the batteries in the correct direction as indicated in the battery compartment.
3. Reinstall the battery door and close it.
4. Turn on the transmitter and verify that the indicator light is a steady green.

If the LED indicator flashes red, the transmitter batteries are low, discharged, or possibly installed incorrectly. Replace them with fresh or recently charged batteries. The power indicator does not indicate the charge level of the battery pack installed in the model. Refer to the Troubleshooting section on page 33 for more information on transmitter LED codes.

Selecting Batteries for Your Model

Your model does not include a charger or battery. The model requires a Traxxas iD® Lithium Polymer (LiPo) battery with a Traxxas High-Current Connector. Do not use Nickel-Metal Hydride (NiMH) batteries. Use Traxxas iD batteries with Traxxas iD chargers for the best performance and safest charging.

The following diagram shows Traxxas batteries compatible with this model:

• LiPo Batteries with iD:
• 2844R: 5200mAh 7.4V 2-Cell 35C LiPo Battery*
• 2869X: 7600mAh 7.4V 2-Cell 25C LiPo Battery*
• 2872X: 5000mAh 11.1V 3-Cell 25C LiPo Battery*
• 2857X: 6400mAh 11.1V 3-Cell 25C LiPo Battery*
• 2889X: 5000mAh 14.8V 4-Cell 25C LiPo Battery*

*The high battery mount and spacer must be removed, and the short battery mount installed for a secure fit.

WARNING: FIRE HAZARD! LiPo battery users must read all details in the Warnings and Precautions chapter starting on page 4. You MUST use a LiPo balancing charger with LiPo batteries, otherwise the batteries may be damaged and even catch fire.

Selecting a Charger for Your Model

Verify that you have correctly chosen the charger type for the selected batteries. Traxxas recommends choosing an original Traxxas EZ-Peak charger with iD for safer charging and longer battery life and better performance.

If the power indicator LED is not solid green, check the battery polarity. If you see any other flashing indicator, refer to the diagram on page 33 to identify the code.

Using the Correct Batteries: Your transmitter uses AA batteries. Use fresh alkaline batteries. Do not use rechargeable AA batteries to power the TQi transmitter, as they do not provide sufficient voltage for optimal performance.

Attention: Stop the model at the first sign of low batteries (flashing red light) to avoid losing control.

Installing the Body

The Ford F-150 Raptor R 4X4 Ultimate features an innovative latch system to secure the truck body to the chassis (no body clips required).

To remove the body and access the chassis:

1. Locate the body mounts under the front and rear body supports and pull the latches outward to release the truck body.
2. Push the latches upward to disengage them completely from the mounts.
3. Lift the body upward from the chassis. Lift the front and rear of the body evenly, otherwise it may be difficult to remove.

To reinstall the body:

1. Place the body over the chassis. Align the front and rear of the body with the bumpers.
2. Press the body down at each latch location until the latches snap into place.

Note: For the clip-less system to function correctly, periodically inspect and clean the body latches and the slots in the front and rear body mounts. If dirt and grime accumulate on these components, the clip-less system will not function correctly.

Installing the Battery Pack

Install the battery pack with the battery cables facing the front of the model. Tilt the battery pack toward the chassis and press (lock) the retaining end of the front lock tab.

Note: The battery hold-down can be rotated on its axis to accommodate battery packs of different heights.

Battery Compartment Features:

• 165 mm (6.49 in.) long x 49.5 mm (1.95 in.) wide
• Size with original battery mount and strap: 32 mm (1.25 in.) or 35 mm (1.38 in.)
• Size with optional battery mount: 23 mm (1.02 in.) or 26 mm (0.90 in.)

Traxxas High-Current Connector: The model is equipped with a Traxxas High-Current Connector. Standard connectors limit current flow and cannot provide the required power to maximize the VXL-3s ESC's output. Traxxas connector's gold-plated terminals, with large contact surfaces, ensure positive current flow with minimal resistance. Safe, durable, and ergonomic, the Traxxas connector is built to extract all the power the battery is capable of.

Radio System Controls

Radio System Rules:

• Always turn on the TQi transmitter first and turn it off last. This procedure protects the model from receiving stray signals from another transmitter or source and losing control. This model is equipped with an electronic failsafe system to prevent this type of malfunction, but the first and best defense against losing control of a model is to always turn on the transmitter first and turn it off last.
• Always use fresh batteries for the radio system. Low batteries limit the radio signal between the receiver and the transmitter. Loss of radio signal can lead to loss of model control.

Basic Radio System Adjustments:

• Steering Lever: The electronic steering lever located on the transmitter panel adjusts the steering's neutral position (center). Note: Traxxas Stability Management (TSM) must be completely turned off during steering calibration. See page 17 for TSM adjustments.
• Multi-Function Button: The multi-function button can be programmed to control a variety of functions. By default, the multi-function button controls Traxxas Stability Management (TSM). For more information on TSM, refer to page 17.

Automatic Failsafe: The TQi transmitter and receiver have a built-in automatic failsafe system that does not require user programming. In case of signal loss or interference, the throttle will return to neutral, and the steering will maintain the last commanded position. If the failsafe activates while you are operating the model, learn why the signal was lost and resolve the problem before restarting the model.

Immediate Shutdown: Immediately stop the model at the first sign of low batteries. Never stop the transmitter while the battery pack is connected. You risk losing control of the model.

To connect the transmitter and receiver: For the transmitter and receiver to connect to each other, the model's receiver must be powered on within 20 seconds of turning on the transmitter. The transmitter's LED will flash red rapidly, indicating a connection error. If this is the case, turn off the transmitter and start over. Always turn on the transmitter before installing the battery.

Using the Radio System

The TQi radio system has been pre-adjusted at the factory. The adjustment should be checked before using the model to ensure that transport has not caused any misalignment. Here's how:

1. Turn on the transmitter. The transmitter's LED should be a steady green (not flashing).
2. Place the model on a block or stand so that all tires are off the ground. Ensure your hands are clear of the model's moving parts.
3. Install the battery pack in the model, then into the speed control.
4. The "On/Off" switch is integrated into the speed control. With the transmitter on, press and hold the EZ-Set button (0.25 seconds). The LED will light solid green (see note below). The model is now powered on. To turn off the VXL-4s, disconnect the battery.

Note: The indicator light will light green if the low-voltage detector is activated. The low-voltage detector is activated by default (LED is solid green). Never use LiPo batteries when the low-voltage detector is disabled. See page 18 for more information.

5. Turn the transmitter steering wheel left and right and check for quick steering servo operation. Also, check that the steering mechanism is not loose or binding. If steering operates slowly, check the batteries.

6. When looking down at the model from above, the front wheels should be perfectly straight. If the wheels turn slightly, turn off TSM (see page 17) and slightly adjust the transmitter's steering trim control until the wheels are straight forward. Then, restore the TSM to your desired setting.

7. Gently operate the throttle to ensure the vehicle moves forward and backward and that the motor stops when the throttle is at neutral. Caution: Do not accelerate fully forward or backward while the model is elevated.

8. When you are finished with adjustments, turn off the model's receiver, then the transmitter manually.

Checking the Radio System Range: Before each model use session, you must test the radio system range to ensure it is functioning correctly.

1. Turn on the radio system and verify that it is functioning as described in the previous section.
2. Have a friend hold the model. Ensure hands and clothing are not near the wheels or other moving parts of the model.
3. Walk away from the model with the transmitter in hand until you reach the farthest distance at which you intend to use the model.
4. Operate the transmitter controls again to verify that the model responds correctly.
5. Do not attempt to use the model if there is any radio system problem or external signal interference at your location.

Greater Distance Required for Higher Speeds: The faster you drive, the faster the model approaches the limit of its radio range. At 60 mph, the model can travel 88 feet in one second! It's thrilling, but be careful to keep the model within range. If you want the model to reach maximum speed, it's best to position yourself in the middle of the area where the truck will be running, not at the end of it, so you can steer the truck towards you and beyond your position. While extending the radio range, this technique keeps the model closer to you, allowing you to see and control it more easily.

Regardless of how fast you drive the model or how far away you drive it, always leave ample space between yourself, the model, and others. Never drive directly toward yourself or others.

Instructions for Connecting the TQi: For best performance, the transmitter and receiver must be electronically "paired." This connection has already been made at the factory. If you ever need to re-pair the system or connect another transmitter and receiver, follow these instructions. Note: The receiver must be connected to a power source rated for 4.8-6.0v for this operation; the transmitter and receiver must be within 5 feet of each other.

1. Press and hold the SET button on the transmitter while turning it on. The transmitter's LED will flash red slowly. Release the SET button.
2. Press and hold the LINK button on the receiver while turning on the speed control (by pressing the EZ-Set button). Release the LINK button.
3. When the transmitter and receiver LEDs turn solid green, the system is paired and ready to operate. Confirm that steering and throttle are functioning correctly before using the model.

Traxxas Stability Management (TSM)

Traxxas Stability Management (TSM) allows you to fully enjoy the speed and acceleration for which your Traxxas model was designed, keeping you in control in low-traction situations. TSM allows for full throttle acceleration on straight surfaces without fishtailing, drifting, or losing control. TSM also radically improves braking control. It is now possible to take high-speed turns with TSM and its corrections, without being bothered or causing unexpected events.

The TQi transmitter's multi-function button has been programmed to control TSM. The recommended (default) TSM setting is at the halfway position (zero on the dial). Turn the button clockwise to increase assistance; turn it counterclockwise to decrease assistance. Turn the button completely counterclockwise to the stop position to turn off TSM.

Note: TSM automatically disengages when driving or braking in reverse. When driving on surfaces with some traction, it may be desirable to reduce the TSM setting for a more "free" feel during controlled drifts, slides, etc. On surfaces with very little traction (loose dirt, smooth concrete, ice/snow), increase TSM for maximum acceleration and control.

Test drive by alternating between TSM on and off to experience the ease and precision of vehicle control it provides. Visit Traxxas.com/tsm for more information.

Note: TSM must be completely turned off during steering trim calibration.

Antenna Installation: The receiver antenna has been installed at the factory. The antenna is secured by a 3x4mm set screw. To remove the antenna tube, remove the set screw using the provided 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 reaches the top of the tube, under the black cap. Then insert the antenna tube into the mount, ensuring the antenna wire enters the slot in the mount, then mount the set screw near the tube. Use the provided 1.5mm wrench to tighten the set screw until the antenna tube is snug. Do not overtighten. Do not bend or tie the antenna wire! See the sidebar for more information. Do not shorten the antenna tube.

Adjusting the Electronic Speed Control

ESC Adjustment: The default settings for the VXL-4s ESC have been programmed at the factory and should not require adjustment for normal operation. The following information is useful for confirming settings or allowing you to customize settings to your needs.

CAUTION: USING LiPo BATTERIES The VXL-4s ESC is designed to operate with 2S, 3S, or 4S LiPo batteries. When you power on the model, the ESC's LED will be solid green. This indicates that the low-voltage detector is active to prevent excessive discharge of LiPo batteries. LiPo batteries are intended for advanced users only who are aware of the risks associated with their use.

Do not use Nickel-Metal Hydride (NiMH) batteries with this model. The batteries will become extremely hot and may cause damage or injury.

WARNING: Burn Hazard. Hot surface. Do not touch.

Transmitter Adjustments for the VXL-4s ESC: Before programming the VXL-4s, it is important to verify that the transmitter is correctly set (reset to default). Otherwise, the speed control may not produce optimal performance.

The transmitter must be set as follows:

• If the transmitter settings have been modified, reset them to the default settings (see page 12) to ensure the motor does not spin the wheels during testing.
• With the transmitter and ESC turned off, press and hold the red MENU and SET buttons on the transmitter.
• Turn on the transmitter, then release both buttons. The transmitter's LED will flash red.
• Press and hold the red MENU and SET buttons until the LED flashes green, then release the buttons.
• Turn the steering wheel fully to the left. Press the SET button to save. Release the button.
• Turn the steering wheel fully to the right. Press the SET button to save. Release the button.
• Pull the throttle to full throttle. Press the SET button to save. Release the button.
• Push the throttle forward for full reverse. Press the SET button to save. Release the button.

Your transmitter is now reset to factory settings. The transmitter's LED will be solid green at full throttle, neutral, or full reverse.

Selecting a Speed Mode: SPORT, RACE, or TRAINING

1. Connect a fully charged battery to the model and turn on the transmitter.
2. Press and hold the EZ-Set button until the LED lights green, then red, then begins to flash red. It will flash once, then twice, then three times, then repeat. One flash = Sport mode is the default setting. Allows for high speed and reverse. Two flashes = Race mode eliminates reverse in case your truck does not allow it. Three flashes = Training mode will reduce the model to 50% to make it easier for new drivers to control the model.
3. Release the EZ-Set button after the number of flashes for the desired mode has been selected. Note: If you miss the desired mode, press and hold the EZ-Set button, and the flash cycle will repeat, allowing you to select the mode.
4. The LED will flash and then light solid green (low-voltage detection ACTIVATED).

VXL-4s Operation: To turn on the speed control and test the programming, place the vehicle on a stable block or platform so that all wheels are off the ground. Disconnect motor wires A and C (see page 12) to prevent the motor from running during the following steps. Connect a fully charged battery pack to the speed control and turn it on (by pressing the EZ-Set button). The LED will light solid green. The VXL-4s will turn on. Operate the throttle forward. The LED will turn off until full throttle is reached. At full throttle, the LED will light solid green. Operate the throttle forward to brake. Note that brake control is perfectly proportional. The LED will turn off until full brake is reached. At full brake, the LED will light solid green. Return the throttle to neutral. The LED will light solid green. Operate the throttle forward again to switch to reverse (profile #1). The LED will turn off. Once full reverse speed is reached, the LED will light solid green.

ESC LED Codes and Protection Modes: The VXL-4s ESC is equipped with complex circuitry designed to protect electronic components from damage caused by overload or excessive temperatures. When a protection circuit is activated, an LED on the VXL-4s ESC will light up, indicating the problem.

BEC (Battery Elimination Circuit) Commutable: The VXL-4s ESC features integrated telemetry and a switchable BEC that allows you to adjust the voltage and send additional power to your model's servo. Requires installation of a high-torque digital servo (Part #2250, 2255, 2275, or 2280, each sold separately), the Traxxas Link Wireless Module (Part #6511, sold separately), and the Traxxas Link application. Download the Traxxas Link application from the Apple App Store™ or Google Play™ and follow the on-screen instructions to pair your device with the Traxxas Link Wireless Module. Open the application, tap the Garage button, then the ESC button.

Voltage Selection: The speed control has two (2) preset BEC voltage selections available in the application. Choose 6.0 volts (standard setting) or 7.4 volts to increase servo power. The selected voltage is retained by the ESC each time it is powered on. Use the application at any time to adjust the voltage or revert to the default setting. Note: If the ESC installed does not have adjustable voltage, the BEC voltage screen (illustrated to the right) will not be displayed by the Traxxas Link application.

Quick Tip for Changing Modes Quickly: The VXL-4s ESC is factory-set to Profile 1 (Sport mode). To quickly switch to Profile 3 (Training mode) with the transmitter on, press and hold the EZ-Set button until the indicator flashes three times red, then release the button. To benefit from full vehicle power, quickly switch to Profile 1 (Sport mode) by pressing and holding the EZ-Set button until the indicator flashes red once, then release it.

Driving the Model

It's time to have fun! This section contains instructions for driving and adjusting the model. Before proceeding, here are some important measures to remember:

• Allow the model to cool down for a few minutes between runs. This is a particularly important measure when using high-capacity battery packs that provide extended model operation. Monitoring temperatures will extend the life of the batteries and motors. See page 29 for information on temperature monitoring for experienced users.
• Stop using the model when the batteries are low, or you risk losing control. Slowing motor speed, slow servo return to center, or ESC shutdown due to the low-voltage circuit are signs of low batteries. Stop the model immediately at the first sign of low batteries. When the transmitter batteries become low, the power indicator light will flash red. Stop immediately and install new batteries.
• Do not drive the model at night, on public roads, or in crowds.
• If the model becomes immobilized against an object, stop the motor. Remove the obstacle before continuing. Do not push or pull objects with the model.
• As a radio-controlled model, it is subject to radio interference from many sources that you cannot control. Because radio interference can cause momentary loss of radio control, always maintain a safety margin in all directions around the model to prevent collisions.
• Use common sense whenever you drive the model. Abusive and imprecise driving will result in poor performance and damaged parts. Take care of your model so you can enjoy it for a long time.
• When using the optional pinion gear for higher speeds, limit yourself to paved surfaces. If the vehicle runs in grass or off-road, the electrical system may be excessively loaded.
• High-performance vehicles produce small vibrations that can loosen hardware over time. Frequently check wheel nuts and other vehicle screws to ensure all hardware is tight.

About Run Time: A key factor influencing run time is the type and condition of the batteries. The mAh rating of the batteries indicates their "reservoir" size. In theory, a 3000 mAh battery pack provides twice the run time of a 1500 mAh pack. Due to the wide variations in available battery types and charging methods, it is impossible to indicate exact run times for this model.

Another primary factor influencing run time is how the model is driven. Run time may decrease if you repeatedly start from a standstill at maximum speed and accelerate hard.

Tips for Increasing Run Time:

• Use batteries with the highest mAh rating you can find.
• Use a quality peak-detecting charger.
• Read and follow all maintenance and care instructions provided by the battery and charger manufacturer.
• Allow the VXL-3s to cool down. Ensure adequate airflow through the speed control's heat sink.
• Use the correct low-voltage cutoff setting for the battery (see page 18). The low-voltage cutoff can be disabled to maximize NiMH battery run time. Never use LiPo batteries when the low-voltage cutoff is disabled.
• Maintain the model. Prevent dirt and damaged parts from binding the drivetrain. Keep the motor clean.
• Lower the gear ratio. Installing smaller pinion gears or larger spur gears lowers the gear ratio and reduces the energy consumption of the motor and batteries, as well as operating temperatures.

mAh Ratings and Output Power: The battery's mAh rating can influence the model's top-end performance. High-capacity battery packs experience less voltage sag under heavy load than lower mAh-rated battery packs. Higher voltage potential promotes increased speed until the battery begins to discharge.

Driving in Wet Conditions

Your new Traxxas model features water-resistant electronics that protect the model's electronic components (receiver, servos, electronic speed control). This gives you the freedom to have fun driving the model in puddles, wet grass, snow, and other wet conditions. Although highly water-resistant, the model should not be treated as submersible or 100% waterproof. Water resistance applies only to the installed electronic components. Driving in wet conditions requires extra care in maintaining the mechanical and electrical components to prevent corrosion of metal parts and maintain their proper functions.

Precautions:

• Without proper maintenance, certain model parts can be severely damaged by contact with water. Be aware that you must perform additional maintenance procedures after driving the model in wet conditions to maintain its performance. Do not use your model in wet conditions if you are not prepared to accept the responsibilities of additional maintenance.
• Not all batteries can be used in wet environments. Contact your battery manufacturer to learn if it can be used in wet conditions. Do not use LiPo batteries in wet conditions.
• The Traxxas TQi transmitter is not waterproof. Do not expose it to wet conditions such as rain.
• Do not operate the model during rain or inclement weather when lightning may occur.
• Avoid allowing the model to come into contact with saltwater (seawater), brackish water (between fresh and saltwater), or other contaminated water. Saltwater is an excellent conductor of electricity and highly corrosive. Be cautious if you plan to use the model at the beach or near a beach.
• Before driving the vehicle in wet conditions:
1. Review the "After driving the vehicle in wet conditions" section before continuing. Ensure you fully understand the additional maintenance measures required by wet conditions.
2. Small holes have been molded into the wheels to allow for tire venting during normal operation. Water enters through these holes and remains inside the tires if holes are not drilled. Drill two small holes (3mm or 1/8" diameter) in each tire. Each hole should be near the tire's centerline, 180 degrees apart.
3. Verify that the receiver box's O-ring and cover are properly installed and secured. The blue O-ring should not protrude beyond the cover's edge.
4. Verify that the batteries can be used in wet conditions.
5. Use lower gearing (smaller pinion gears or larger spur gears) when operating the model in deep mud, deep puddles, snow, or other similar situations that limit tire traction and significantly increase motor load.

Motor Safety Precautions: The Velineon motor's life can be significantly reduced in mud and water. If the motor becomes excessively wet or submerged, apply very light throttle (feather the motor) until the excess water is expelled. Applying full throttle to a water-filled motor can quickly cause it to fail. Your driving habits will determine the motor's life when affected by moisture. Do not submerge the motors.

Do not engage the motor based on temperature in wet conditions. Motors cool down upon contact with water, which cannot accurately indicate if engagement is correct. Exercise particular caution in muddy conditions. Stop the model if it appears bogged down or if mud is on the chassis. Prevent mud layers from accumulating on or around the motor.

After driving the vehicle in wet conditions:

1. Empty the tires by running them at full throttle – this will expel the water. You can do this by, for example, making high-speed passes, preferably on a flat, dry surface.
2. Remove the batteries.
3. Rinse the truck of any dirt and mud with low-pressure water, such as from a garden hose. DO NOT use a pressure washer or any other high-pressure water. Avoid directing the water jet toward the bearings or differentials.
4. Blow compressed air over the truck (optional, but recommended). Wear safety glasses when using compressed air.
5. Remove the truck's wheels.
6. Spray WD-40® or other light water-repellent oil on all bearings, the drivetrain, and linkages.
7. Allow the truck to air dry or dry it with compressed air. Placing the truck in a sunny location will aid drying. Water and oil from the interior will continue to drip from the truck for several hours. Place it on a towel or piece of cardboard to protect the surface below.

Conduite du Modèle

Preventative Maintenance: Remove the sealed cover of the receiver box. Although unlikely, moisture or tiny amounts of moisture or condensation may enter the receiver box during operation in wet conditions. This can cause long-term problems for the receiver's sensitive electronic systems. Removing the receiver box cover during storage allows air to dry the interior. This measure can improve receiver reliability. It is not necessary to remove the receiver or disconnect the wires.

Additional Maintenance Measures: Increase the frequency of disassembly, inspection, and lubrication of the following items. This measure is necessary after prolonged use in wet conditions or if the vehicle will not be used for a period of time (one week or more). This additional maintenance measure is necessary to prevent moisture trapped inside from corroding internal steel components.

• Axle Housing Bearings: Remove, clean, and relubricate the bearings.
• Differentials: Remove, disassemble, clean, and regrease the differential parts. Apply a thin layer of ball bearing grease (found at any auto parts store) to the gear teeth of the ring gear. Refer to the exploded view diagrams if you need assistance with disassembly and reassembly.
• Velineon Motor: After running the model in wet or muddy conditions, remove the motor and clean the bearings of mud or dirt. To access the rear bearing, remove the plastic cover by pressing with your thumb or using a flat-blade screwdriver as a lever. To prevent corrosion and extend the life of the parts, lubricate the bearings with light oil (available at your local hobby store). Follow these instructions to maintain maximum motor performance for a long time. Protect your eyes when using aerosol cleaners.

Receiver Box: Maintaining a Watertight Seal

Removal and Installation of Radio Equipment: Due to the unique design of the receiver box, the receiver can be removed and installed without losing the ability to maintain the box's watertight seal. The patented wire retainer allows you to install aftermarket radio systems and maintain the receiver box's seal.

Receiver Removal:

1. To remove the wire retainer, remove the two 2.5x12mm socket-head screws.
2. To remove the cover, remove the two 3x12mm round-head screws.
3. To disassemble the receiver from the box, disconnect the servo wires from the receiver and remove the receiver.

Receiver Installation:

1. Install the receiver in the box using double-sided tape. Verify that the light conduit on the receiver box aligns with the receiver's LED.
2. Note: For best performance, we recommend installing this receiver in the same orientation as the original receiver, as shown.
3. Install the servo wires and antenna through the cover and connect the wires to the receiver.
4. Verify that the O-ring is properly seated in the receiver box's groove so that the cover does not pinch or damage it in any way.
5. Reinstall the cover and tighten the two 3x12mm round-head screws.
6. Examine the cover to ensure the O-ring is not visible.
7. Arrange the wires properly using the receiver box's wire guides.
8. Apply a small drop of silicone grease (Traxxas Part #1647) to the wire retainer.
9. Install the wire retainer and tighten the two 2.5x10mm round-head screws.

Basic Adjustments

Once you are familiar with driving the model, you may need to make some adjustments to improve it.

Gear Mesh Adjustment: Incorrect gear mesh is the most common cause of stripped spur gears. Gear mesh should be checked and adjusted whenever a gear part is replaced. To access the gear, remove the cover by unscrewing the single screw that secures it. Loosen the motor screw to adjust the gear mesh. Cut a thin sheet of paper and pass it through the gear mesh. Slide the motor pinion and spur gear into the spur gear. Tighten the motor screws, then remove the paper sheet. You should be able to pass a new sheet of paper through the gears without it snagging. Paper sheet, Motor screw, Spur gear, Spur gear.

Camber Adjustment: Geometry and alignment characteristics play an important role in vehicle handling. Take the time to adjust them correctly. Turn off TSM (see page 17), then set the transmitter's steering lever to the neutral position. Then, adjust the servo and steering links so that both front wheels are perfectly straight and parallel (0-degree camber). This will balance the steering in both directions. To increase stability, add one or two degrees of camber to each front wheel. Adjust alignment using turnbuckles.

Camber Gain: Camber gain refers to the increase in camber angle as the suspension compresses. The vehicle's camber gain can be modified by moving the camber link mount to another horizontal mounting position. Adjusting the camber gain modifies the tire's contact patch area as the suspension compresses. The shorter the camber link, the greater the camber gain. This will make the truck more stable when driving over bumps, but it will have less traction on smooth surfaces. Lengthening the camber links will have the opposite effect.

• Front Camber Gain: To increase front suspension camber gain, move the inner ends of the camber links to position 3. Position 4 is the default.
• Rear Camber Gain: To increase rear suspension camber gain, move the inner ends of the camber links to another hole (position 1, 2, or 3 in the image). Position 5 is the default.

After adjusting camber gain, you may need to readjust the static camber to match your new settings.

ROLL CENTER: Follow the instructions for adjusting the roll center geometry of the front and rear suspension. Roll center refers to the virtual axis around which the chassis rolls when subjected to side forces. The vehicle's roll center can be raised by mounting the inner camber link ends in a lower mounting position. Raising the roll center makes the vehicle's roll stiffer (similar to installing sway bars). Adding roll resistance to one end of the vehicle increases traction at the other end. For example, increasing rear roll resistance provides more front-wheel maneuverability and traction. By raising the front and rear suspension roll centers, you increase the total roll resistance without changing the vehicle's handling characteristics. The default configurations are designed to make the truck easier and more flexible to drive and less prone to spinning out in corners.

• Front Roll Center: To reduce front suspension roll center, move the inner ends of the camber links to position 1 or 2. Position 4 is the default. To further lower the roll center, mount the outer ends of the camber links to the lower position on C-hub (image A) and one of the two lower holes on the shock tower (positions 3 or 4 in the front image), the ball end of the steering linkage should face inward (default position - image B). If you use any other combination of camber link mounting points, the ball end of the steering linkage should face downward (C).
• Rear Roll Center: To lower the rear suspension roll center, reposition the inner camber links to one of the three holes (position 1, 2, or 3 in the image) in the upper row of the rear camber link, located near the base of the rear shock tower.

After adjusting camber gain, you may need to readjust the static camber to match your new settings.

Servo Centering: If you have removed the servo horn from the steering servo, or the servo itself has been removed for maintenance or cleaning, the servo must be re-centered before installing the servo horn or the servo in the model.

1. Remove the servo horn from the steering servo.
2. Connect the steering servo to channel 1 of the receiver. Connect the electronic speed control to channel 2. The white wire on the servo cable faces the receiver's LED.
3. Turn on the transmitter. Verify that the transmitter batteries are not depleted.
4. Turn off TSM (see page 17).
5. Switch the transmitter's steering wheel to the "0" position.
6. Disconnect motor wires "A" and "C" (see page 12) to prevent the motor from running during the following steps. Connect a fully charged battery pack to the speed control and turn it on (see page 18). The servo output shaft will automatically jump to the center position.
7. Install the servo horn onto the servo output shaft. The servo horn should face the center of the chassis and be perpendicular to the servo body.
8. Verify that the servo operates correctly by turning the steering wheel in both directions to ensure the mechanism has been centered correctly and you have equal travel in both directions. Using the transmitter's steering trim control, fine-tune the servo horn's position so that the model travels straight when the steering wheel is at neutral.

Advanced Adjustments

Transmission Gearing: One of the most significant advantages of the model's transmission is the wide range of available gear ratios. Changing the gears allows you to fine-tune the model's speed and control battery and motor temperatures. Use a lower gear ratio (numerically higher) to reduce current draw and temperatures. Use a higher gear ratio (numerically lower) to increase speed. Use the following formula to calculate the total gear ratio for combinations not shown on the gear chart:

# of spur gear teeth / # of pinion gear teeth x 5.22 = total gear ratio

When using higher gear ratios, it is important to monitor battery and motor temperatures. If the battery is extremely hot (150°F) and/or the motor is too hot to touch (200°F), the model is likely over-geared and the current draw is too high. This temperature test assumes the model has approximately its original weight and operates freely without excessive friction, drag, or binding, and the battery is fully charged and in good condition. Note: Check and adjust the gear mesh if a spur gear and/or pinion gear has been changed. This model is equipped with the latest Velineon 3500 motor. The factory gear combination generally provides good acceleration and top speed. If you wish to increase top speed, install the optional larger spur gear (more teeth) provided. The optional larger spur gear is necessary for high-speed operation on hard surfaces and is not recommended for all-terrain operation or if the vehicle will be starting and stopping repeatedly.

LiPo Batteries: LiPo batteries are intended for advanced users only who are aware of the risks associated with their use. It is imperative that the user follow all other instructions provided by the battery and charger manufacturers for proper charging, use, and storage of LiPo batteries. Ensure you understand how to use LiPo batteries. See page 4 for more information on safety and warnings.

Temperatures and Cooling: Monitoring temperatures will extend the life of batteries and motors. There are many available options for monitoring temperatures and cooling components.

• Temperature Sensor: To accurately monitor motor temperature and prevent overheating, a telemetry temperature sensor has been installed on the motor to monitor temperature continuously during driving. Generally, try to keep motor temperature below 200°F. If necessary, direct airflow to the motor by prioritizing airflow from the rear of the body or windshield.
• Cooling Fan for Heat Sink Plate: The VXL-4s is equipped with an auxiliary connector that can power a cooling fan for the heat sink plate (Part #3340). The optional heat sink plate cooling fan can cool the VXL-4s in high-current motor applications.
• Motor Heat Sink Plate and Cooling Fan: The Velineon 540XL motor can be equipped with an optional heat sink plate (Part #3458) and fan (Part #3456). These optional accessories will ensure that cooling airflow passes over the motor and dissipates heat.

Important Note: Always use motor bolts of the correct length. Standard mounting bolts are 3x8mm. Motor bolts that are too long will affect motor rotation and damage internal parts!

The VXL-3s has a locked-rotor protection system. The VXL-3s monitors motor rotation. If the motor is locked or damaged, the speed control activates the integrated safety system until the motor can rotate freely.

Advanced Adjustments

Hermetic Gear Differential Adjustment: The action of the front and rear gear differentials on the Raptor R 4X4 Ultimate can be adjusted based on driving conditions and performance requirements, without complex disassembly or removal of the suspension system.

By default, the differentials are filled with silicone fluid and sealed to maintain consistent long-term performance. Changing the differential fluid with fluid of lower or higher viscosity degrees modifies the differential's performance. Using thicker fluid in the differential reduces the tendency to transfer drive power to the wheel with less traction, under conditions of minimal traction. This is noticeable when taking sharp turns on smooth surfaces. The inside wheels in the turn have less traction and tend to spin at extremely high RPMs. Thicker silicone fluid acts like a limited-slip differential, distributing equal power to the left and right wheels.

In general, the Raptor R 4X4 Ultimate prefers thicker silicone fluid when climbing, crawling over rocks, or driving on surfaces with reduced traction. Note: Heavier fluid ensures equal power transfer even if one or more tires are not touching the ground. This makes the vehicle more likely to flip over on high-traction surfaces.

By default, the front differential is filled with SAE 30,000W (30K) viscosity silicone fluid. The rear differential is filled with grease, but can also be adjusted with silicone fluid. Always use silicone fluid in the differentials. Traxxas offers silicone fluid for differentials in several viscosity levels:

• Part #5135: 10K
• Part #5130: 100K
• Part #5136: 30K
• Part #5139: 500K
• Part #5137: 50K

Follow the steps below to fill the front and rear differentials:

Front Differential Disassembly:

1. Remove the two 3x15mm round-head screws securing the upper front bumper support to the differential housing.
2. Turn the chassis over and remove the three 4x10mm flat-head screws securing the bumper or skid plate to the bulkhead. It is not necessary to remove the two rear screws.
3. Slide the bumper assembly out of the chassis.
4. Unscrew the 3x15mm round-head screw from the bumper support and differential crossmember.
5. Slide the crossmember out to remove it from the truck.
6. Remove the two 3x15mm round-head screws from the differential cover. Do not remove the two screws securing the shock tower.
7. Remove the differential cover and slide the differential out of the front of the housing.
8. Reinstall the differential by reversing the previous steps.

Rear Differential:

1. Remove the two 3x20mm round-head screws securing the upper rear bumper support to the differential housing.
2. Turn the chassis over and remove the three 3x12mm flat-head screws securing the bumper or skid plate to the bulkhead. It is not necessary to remove the two front screws.
3. Unscrew the 3x20mm round-head screw from the bumper support and differential crossmember.
4. Slide the bumper assembly out of the chassis.
5. Remove the chassis tie bar.
6. Unscrew the two 3x15mm round-head screws from the differential cover. Do not remove the two screws securing the shock tower.
7. Remove the differential cover and slide the differential out of the front of the housing.
8. Reinstall the differential by reversing the previous steps.

Filling the Differential:

1. Remove the four 2.5x10mm screws from the differential housing and carefully separate the two housing halves. Work over a towel to catch any fluid that may drip from the differential.
2. Empty the differential of all fluid. For easier handling, you can remove the differential's satellite gears.
3. If you removed them, reinstall the satellite gears into the differential housing. Fill the differential housing with fluid until the satellite gears are half submerged.
4. Join the differential housing halves, carefully aligning the screw holes.
5. Verify that the rubber gasket is in place, otherwise the differential may leak.
6. Install the 2.5x10mm screws and tighten them securely.

Advanced TQi Setup Guide

TQi Transmitter Setup: Follow these steps to pair your transmitter and the Traxxas Link application for the first time:

1. Turn on the transmitter.
2. Open the Traxxas Link application on your mobile device. Touch the Garage button, then the Wireless Module button (A).
3. Press the Traxxas Link Wireless Module button. The module's blue LED will flash (B).
4. Within 10 seconds, press the "Search for Traxxas Link Wireless Module" button on your mobile device (C).
5. The Bluetooth® icon will light solid, and the module's LED will light solid blue (D).
6. The Traxxas Link Wireless Module and Traxxas Link application are connected, and can establish automatic connection when the transmitter is on and the application is running.

Traxxas Link Dashboard: The customizable Traxxas Link dashboard displays real-time RPM, speed, temperature, and voltage. Set threshold warnings and note maximum, minimum, or average values. Use the recording function to capture the dashboard image with sound, so you can focus on driving without missing important moments. Traxxas Link allows you to manage 30 models.

The TQi radio system automatically tracks all vehicles it is connected to and all settings used for each of them – up to 30 models. Traxxas Link uses a visual interface to name models, customize their settings, attach profiles, and save them to memory. Simply choose a model and a connected transmitter, turn them on, and have fun!

TQi Transmitter LED Module Indicator Codes:

Menu Tree: The menu tree below shows the navigation system through the TQi transmitter's settings and functions. Press and hold MENU to enter the menu tree, then use the following commands to navigate the menu and select options.

MENU: When entering a menu, always start at the top. Press MENU to scroll through the menu tree. When you reach the bottom of the tree, you can return to the top by pressing MENU again.

SET: Press SET to move through the menu tree and select options. When an option is communicated to the transmitter's memory, the LED will flash green rapidly.

RETURN: Press MENU and SET simultaneously to move up one level in the menu tree.

EXIT: Press and hold MENU to exit programming. The options you have selected will be saved.

ECHO: Press and hold SET to activate the "echo" function. Echo will return you to your current position in the menu tree if you get lost. For example: If your current position is Steering Limit Points, press and hold SET, and the LED will flash green twice, then green once, then red three times. Echo does not change your settings or your position in the programming sequence.

Here is an example of how to access a function in the menu tree. In the example below, the user is configuring the multi-function button to control Steering % (Dual Rate).

How to Set the Multi-Function Button to Control Steering % (Dual Rate):

1. Turn on the transmitter.
2. Press and hold MENU until the LED lights green. It will flash at single intervals.
3. Press SET. The red LED will flash at single intervals to indicate that Steering Sensitivity (Exponential) has been selected.
4. Press MENU twice. The red LED will flash three times repeatedly to indicate that Steering % (Dual Rate) has been selected.
5. Press SET to confirm. The LED will flash green 8 times rapidly to indicate successful selection.
6. Press and hold MENU to return to driving mode.

Adjustable Settings: The following items can be most easily adjusted using your mobile device and the Traxxas Link application. Access to all functions described below is through the transmitter's menu and adjustment buttons, and by observing the LED indicators. An explanation of the menu structure follows on page 36.

The Traxxas transmitter has a programmable multi-function button that can be set to operate various advanced functions of the transmitter (defaulted to Traxxas Stability Management (TSM), see page 17). Experiment with the settings and functions available to see if they can improve your vehicle's handling.

Steering Sensitivity (Exponential): The TQi transmitter's multi-function button can be set to control steering sensitivity (also known as exponential). The default steering sensitivity setting is "normal (zero exponential)," where the dial is turned fully counterclockwise. This setting provides a linear servo response: steering movement corresponds exactly to transmitter steering wheel movement. Turning the button clockwise from center produces "negative exponential" and reduces steering sensitivity near the neutral position, while sensitivity increases as the servo approaches the limits of its travel. The more you turn the button, the more pronounced the effect becomes. The term "exponential" comes from this effect; the servo's travel changes exponentially relative to the steering wheel's command. Reduced steering sensitivity can be useful when driving the model on low-traction surfaces at high speeds or on tracks that favor drifting and require light steering inputs. The ranges are exaggerated for illustration purposes.

Throttle Sensitivity (Exponential Throttle): The multi-function button can be set to control throttle sensitivity. Throttle sensitivity functions just like steering sensitivity, but it affects the throttle channel. Forward throttle is the only one affected; braking and reverse remain linear regardless of the throttle sensitivity setting.

Steering Percentage (Dual Rate): The multi-function button can be set to control the amount (percentage) of servo travel applied to the steering. Turning the multi-function button fully clockwise provides maximum steering travel; turning the button counterclockwise reduces steering travel (Note: turning the dial fully counterclockwise to the stop position will nullify all servo travel). Keep in mind that the steering end-point settings define the maximum steering travel. If you set the steering percentage to 100% (by turning the multi-function button fully clockwise), the servo travel will go to the maximum end-point without exceeding it. Many drivers use dual rate to benefit from only the steering travel they need for the tightest corner, making it easier to drive the model on the rest of the track. Reducing steering travel can also be useful for controlling a model on high-traction surfaces and limiting steering input on oval tracks where large steering travel is not needed.

Braking Percentage: The multi-function button can also be set to control the braking travel applied by the servo to a nitro-powered model. Electric models do not have a servo brake, but the braking percentage function works the same way for these models. Turning the multi-function button fully clockwise provides maximum brake travel; turning the button counterclockwise reduces brake travel (Note: turning the dial fully counterclockwise to the stop position will nullify all braking).

Steering End Point and Throttle End Point: The TQi transmitter allows you to select the servo travel limit (or "end point") independently for left and right steering (on the steering channel) and for throttle and brake (on the throttle channel). With this feature, you can fine-tune the servo to prevent any binding caused by the linkages actuating the steering servo or throttle (in the case of a nitro-powered model) beyond their mechanical limits. The end-point settings you make represent your choice of maximum servo travel; the steering percentage and braking percentage functions do not override the end-point settings.

Steering and Throttle Secondary Adjustment: The secondary adjustment function is used to precisely set the steering or throttle neutral position in case the "zero" adjustment dial does not return the servo completely to center. When selected, the secondary adjustment fine-tunes the servo output shaft position, further refining the neutral position. Always set the steering trim dial to zero before making final adjustments (if any) using the secondary adjustment. If the throttle was previously adjusted, it must be reset to "zero" before making final adjustments using the secondary adjustment.

Throttle Adjustment: Setting the multi-function button to operate as a throttle allows the driver to adjust the throttle's neutral position to prevent unwanted braking or acceleration when the transmitter is at neutral. Note: The transmitter features a throttle search mode that prevents accidental model acceleration. See the sidebar on page 33 for more information.

Locking Adjustment: After making all adjustments to your satisfaction, you can disable the multi-function button so that your settings are not changed. This feature is particularly useful if you use multiple vehicles with a single transmitter through Traxxas Link Model Memory.

Multiple Adjustments and the Multi-Function Button: It is important to note that adjustments made with the multi-function button are "layered" on top of each other. For example, if you command the multi-function button to set the steering percentage to 50% and then command it to control steering sensitivity, the transmitter will "remember" the steering percentage setting. Steering sensitivity adjustments will apply to the 50% of steering travel you previously selected. Similarly, "disabling" the multi-function button makes it incapable of making any further adjustments, but the last adjustment made by the multi-function button remains applicable.

Traxxas Link Model Memory: Traxxas Link Model Memory is an exclusive, patent-pending feature of the TQi transmitter. Each time it is connected to a new receiver, the transmitter automatically saves that receiver into its memory, along with all settings assigned to that same receiver. When the transmitter and any connected receiver are turned on, the transmitter automatically recalls the receiver's settings. No need to manually select the vehicle from a model memory list. You can also connect multiple TQi transmitters to the same model, select any connected transmitter and any connected model, turn them on, and start driving. Thanks to the Traxxas Link Model Memory feature, you no longer need to remember which transmitter is connected to which model, and you will never need to select a model from a model memory list. The transmitter and receiver do all of this automatically.

Locking the Model: Traxxas Link Model Memory can store up to thirty models (receivers). If you connect the thirty-first receiver, Traxxas Link Model Memory will delete the "oldest" receiver (in other words, the model you have used the longest will be deleted). By activating model lock, the receiver will be permanently saved into memory: it cannot be deleted.

To activate model lock:

1. Turn on the transmitter and the receiver you wish to lock.
2. Press and hold MENU. Release when the LED flashes green.
3. Press MENU three times. The LED will flash green four times repeatedly.
4. Press SET. The LED will flash green once at intervals.
5. Press SET once. The LED will flash red once at intervals.
6. Press MENU once. The LED will flash red twice repeatedly.
7. Press SET. The LED will flash green rapidly. The memory is now locked. Press and hold MENU to return to driving mode.

Note: To unlock the memory, press SET twice in step 5. The LED will flash green rapidly to indicate that the model is unlocked. To unlock all models, press MENU twice in step 6, then press SET.

To delete a model: Sooner or later, you will want to delete a model from memory that you no longer drive.

1. Turn on the transmitter and the receiver you wish to delete.
2. Press and hold MENU. Release when the LED flashes green.
3. Press MENU three times. The LED will flash green four times repeatedly.
4. Press SET once. The LED will flash green once at intervals.
5. Press MENU once. The LED will flash green twice repeatedly.
6. Press SET. The memory will be deleted. Press SET to delete the model. Press and hold MENU to return to driving mode.

Menu Tree

The menu tree below shows the navigation system through the TQi transmitter's settings and functions. Press and hold MENU to enter the menu tree, then use the following commands to navigate the menu and select options.

MENU: When entering a menu, always start at the top. Press MENU to scroll through the menu tree. When you reach the bottom of the tree, you can return to the top by pressing MENU again.

SET: Press SET to move through the menu tree and select options. When an option is communicated to the transmitter's memory, the LED will flash green rapidly.

RETURN: Press MENU and SET simultaneously to move up one level in the menu tree.

EXIT: Press and hold MENU to exit programming. The options you have selected will be saved.

ECHO: Press and hold SET to activate the "echo" function. Echo will return you to your current position in the menu tree if you get lost. For example: If your current position is Steering Limit Points, press and hold SET, and the LED will flash green twice, then green once, then red three times. Echo does not change your settings or your position in the programming sequence.

Here is an example of how to access a function in the menu tree. In the example below, the user is configuring the multi-function button to control Steering % (Dual Rate).

How to Set the Multi-Function Button to Control Steering % (Dual Rate):

1. Turn on the transmitter.
2. Press and hold MENU until the LED lights green. It will flash at single intervals.
3. Press SET. The red LED will flash at single intervals to indicate that Steering Sensitivity (Exponential) has been selected.
4. Press MENU twice. The red LED will flash three times repeatedly to indicate that Steering % (Dual Rate) has been selected.
5. Press SET to confirm. The LED will flash green 8 times rapidly to indicate successful selection.
6. Press and hold MENU to return to driving mode.

Menu Tree Formulas: To select functions and adjust the TQi transmitter without referring to the menu tree, turn on your transmitter, find the function in the left column that you wish to adjust, and follow the corresponding steps.

Adjust Steering Sensitivity (Expo): Press and hold MENU. The LED flashes green. Press SET. The LED flashes red. Press MENU. The LED flashes red twice. Press SET to confirm. The LED flashes green 8 times rapidly. Press and hold MENU to return to driving mode.

Adjust Throttle Sensitivity (Expo): Press and hold MENU. The LED flashes green. Press SET. The LED flashes red. Press MENU. The LED flashes red twice. Press SET to confirm. The LED flashes green 8 times rapidly. Press and hold MENU to return to driving mode.

Adjust Steering % (Dual Rate): Press and hold MENU. The LED flashes green. Press SET. The LED flashes red. Press MENU twice. The LED flashes red three times. Press SET to confirm. The LED flashes green 8 times rapidly. Press and hold MENU to return to driving mode.

Adjust Brake %: Press and hold MENU. The LED flashes green. Press SET. The LED flashes red. Press MENU three times. The LED flashes red four times. Press SET to confirm. The LED flashes green 8 times rapidly. Press and hold MENU to return to driving mode.

Adjust Throttle for Accelerator: Press and hold MENU. The LED flashes green. Press SET. The LED flashes red. Press MENU four times. The LED flashes red five times. Press SET to confirm. The LED flashes green 8 times rapidly. Press and hold MENU to return to driving mode.

To LOCK the multi-function button: Press and hold MENU. The LED flashes green. Press SET. The LED flashes red. Press MENU five times. The LED flashes red six times. Press SET to lock. The LED flashes green 8 times rapidly. Press and hold MENU to return to driving mode.

To REVERSE Servo Direction: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press SET. The LED flashes red. Press SET to reverse servo direction. Press and hold MENU to return to driving mode.

To adjust STEERING SECONDARY TRIM: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press SET. The LED flashes red twice. Press MENU. The LED flashes red twice. Use the multi-function button to set the neutral position. Press SET to save.

To adjust STEERING LIMIT POINTS: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press SET. The LED flashes red three times. Press MENU twice. The LED flashes red three times. Turn the steering wheel to set the desired maximum travel to the left and right. Press SET to save each position. Turn the wheel to test the adjustments. IF LIMIT POINTS ARE CORRECT: Press and hold MENU to return to driving mode. IF LIMIT POINTS NEED TO BE CHANGED: Press SET and repeat steps 6-8.

To reset STEERING LIMIT POINTS to default: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press SET. The LED flashes red four times. Press MENU three times. The LED flashes red four times. Press SET to reset limit points.

To REVERSE ACCELERATOR Servo Direction: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes red eight times. Press SET to reverse servo direction. Press and hold MENU to return to driving mode.

To adjust ACCELERATOR SECONDARY TRIM: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press MENU. The LED flashes green twice. Use the multi-function button to set the neutral position. Press SET to save.

To adjust ACCELERATOR LIMIT POINTS: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press SET. The LED flashes red twice. Press MENU. The LED flashes red three times. Operate the throttle to set the desired maximum throttle or brake travel. Press SET to save. Turn the lever to test the adjustments. IF LIMIT POINTS ARE CORRECT: Press and hold MENU to return to driving mode. IF LIMIT POINTS NEED TO BE CHANGED: Press SET and repeat steps 7-9.

To reset ACCELERATOR LIMIT POINTS to default: Press and hold MENU. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes green. Press MENU. The LED flashes green twice. Press SET. The LED flashes red four times. Press SET to reset limit points.