Traxxas UNLIMITED DESERT RACER 85086-4 Owner's Manual
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Traxxas UNLIMITED DESERT RACER 85086-4 Owner's Manual

Traxxas UNLIMITED DESERT RACER 85086-4 Owner's Manual

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MODEL 85086-4
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Summary of Contents for Traxxas UNLIMITED DESERT RACER 85086-4

  • Page 1 MODEL 85086-4 owner s manual ’...

  • Page 2: Table Of Contents

    BASIC TUNING read and follow the procedures in this manual. ADJUSTMENTS Thank you again for going with Traxxas. We work hard every day to assure you receive the highest level of customer satisfaction MAINTAINING possible. We truly want you to enjoy your new model!

  • Page 3: Before You Proceed

    Traxxas, Ready-To-Race, Ready- & CROSS-REFERENCES To-Win, Unlimited Desert Racer, parts may be purchased directly from Traxxas by phone or online Throughout this manual, you’ll notice warnings and helpful hints Velineon, and ProGraphix at Traxxas.com. You can save time, along with shipping and handling identified by the icons below.

  • Page 4: Safety Precautions

    14 years of age. ensure the safety of yourself and others around you. Operating If you as the user do not accept liability of ownership, Traxxas requests the Desert Racer in a careless, unsafe manner, without adequate that you do not use this product. Do not open any of the enclosed care and preparation, can result in collisions with catastrophic materials.
  • Page 5 DO NOT imbalance, cell damage and fire. associated with LiPo battery use. Traxxas does not exceed the maximum manufacturer recommended • If a battery gets hot to the touch during the charging recommend that anyone under the age of 14 use or charge rate.
  • Page 6 • Use Traxxas High-Current Connectors: Do not change the battery • Do not drive the model close to you where a mistake or loss of and motor connectors. Improper wiring can cause fire or damage to control could cause the model to collide with you or any spectator.

  • Page 7: Tools, Supplies, And Required Equipment

    ™ (part #2971, (part #2914, sold separately) sold separately) Two 2s/3s LiPo battery packs with Traxxas High-Current Connectors LiPo battery charger 4 AA alkaline (or single 4s LiPo battery pack using the supplied accessory adapter) batteries Traxxas Power Cell LiPo batteries recommended Minimum: 5000mAh 7.4v 2-cell (2S)

  • Page 8: Anatomy Of The Unlimited Desert Racer

    ANATOMY OF THE UNLIMITED DESERT RACER Chassis Top View Trailing Arm Rear Swaybar Linkage Roll Cage Axle Carrier Upper Suspension Driveshaft Nerf bar High-Voltage Shock Power Amplifer Front Differential Front Bumper LED Light Pipe Bumper Extension Body Interior Receiver Box Electronic Speed Control Antenna Mount Rear Bumper...
  • Page 9 Chassis Bottom View Rear Axle Housing Rear Upper Link Driveshaft Chassis Skidplate Spur Gear Steering Servo Transmission Rear Differential Motor Pinion Gear Front Skidplate Limit Strap Battery Door Latch Battery Compartment Door Trailing Arm Shock Traxxas High-Current Connector Battery Hold-Down Lower Suspension...

  • Page 10: Quick Start: Getting Up To Speed

    QUICK START: GETTING UP TO SPEED The following guide is an overview of the procedures for getting your model running. Look for the Quick Start logo on the bottom corners of Quick Start pages. The Quick Start Guide is not intended to replace the 1.

  • Page 11: Tq Radio And Velineon Power System

    INTRODUCTION signals from the electronic speed control and the motor synch with each other. The VXL-6s electronic speed control is optimized Your model includes the latest Traxxas TQi 2.4GHz transmitter with Applying the Decals to virtually eliminate cogging. Traxxas Link ™...
  • Page 12 TRAXXAS TQ RADIO & VELINEON POWER SYSTEM NiMH - Abbreviation for nickel-metal hydride. Rechargeable NiMH Thermal Shutdown Protection - Temperature sensing electronics batteries offer high current handling and much greater resistance used in the VXL-6s electronic speed control detect overloading To prevent loss of radio range to the “memory”...
  • Page 13 TRAXXAS TQ RADIO & VELINEON POWER SYSTEM ESC/Motor Wiring Diagram Your model is equipped with the newest TQi 2.4GHz transmitter with Traxxas Link ™ Model Memory. The transmitter has two channels for controlling your throttle and steering. The receiver inside the model has 5 output channels. Your model is equipped with one servo and an electronic speed control.
  • Page 14 The status LED does not indicate the charge level of the battery pack installed in the model. Refer to the troubleshooting Traxxas EZ-Peak iD charger for safer charging and maximum battery section on page 32 for more information on the transmitter status life and performance.
  • Page 15 Traxxas recommended Note: The battery hold-down will remain attached to the chassis. and sliding the door open (B). battery packs are equipped with Traxxas Battery iD. This exclusive feature allows Traxxas battery chargers (sold separately) to automatically recognize connected battery...
  • Page 16 • When using a Traxxas 5000mAh 4s battery pack (part #2888X), install foam battery spacers in the battery compartment for proper fitment. Install the battery pack as described in the previous section.
  • Page 17 (center) point of the steering channel. are operating your model, Forward determine the reason for Note: Traxxas Stability Management (TSM) must be completely signal loss and resolve the turned off while adjusting steering trim. See page 19 for TSM RADIO SYSTEM RULES problem before operating adjustments.
  • Page 18 TRAXXAS TQ RADIO & VELINEON POWER SYSTEM USING THE RADIO SYSTEM 4. Operate the controls on the transmitter once again to be sure that the model responds correctly. The TQi Radio System has been pre-adjusted at the factory. The To turn the model off, unplug adjustment should be checked before running the model in case of 5.
  • Page 19 Traxxas 1.5mm wrench. cut the metal tip, and do not bend or cut the white wire at...

  • Page 20: Adjusting The Electronic Speed Control

    LED is green, indicating that Low Voltage Detection is activated to prevent Traxxas High-Current 4. The LED will blink and then turn solid green (Low-Voltage Detection over-discharging of LiPo batteries. LiPo batteries are intended only for the Connector ACTIVE).
  • Page 21 LED light kits (Profile #3) reduces forward packs to the VXL-6s and turn on your or additional cooling fans (see Traxxas.com for additional information). and reverse throttle by 50%. transmitter.
  • Page 22 Disconnect the are connected. batteries and contact Traxxas Customer Service for • Voltage LED (V) Slow Blinking Red: The VXL-6s has assistance. entered Low Voltage Protection, Stage 2. When the...
  • Page 23 Default Connection Default Setting amplifier settings and gain access to additional functions using the Front Grille Low Beam Headlights Traxxas Link App (available in the Front Grille High Beam Headlights Apple App Store or on Google Low Beam Windshield Lights Play™).

  • Page 24: Driving Your Model

    DRIVING YOUR MODEL Now it’s time to have some fun! This section contains instructions on • Because the model is controlled by radio, it is subject to radio driving and making adjustments to your model. Before you go on, interference from many sources beyond your control. Since radio here are some important precautions to keep in mind.
  • Page 25 Do not • The Traxxas TQi transmitter is not water resistant. Do not subject it allow mud to collect on the motor or pack around the motor. to wet conditions such as rain.
  • Page 26 • Differentials: Remove, disassemble, clean, and re-grease the wire guides in the receiver box. The excess differential components. Use a light coating of Traxxas high- wire will be bundled inside the receiver performance grease (part #5041) on the metal gear teeth.

  • Page 27: Basic Tuning Adjustments

    BASIC TUNING ADJUSTMENTS Once you become familiar with driving your model, you might need to make adjustments for better driving performance. Adjusting Gear Mesh Incorrect gear mesh is the most common cause of stripped spur gears. Your Desert Racer makes improper gear mesh virtually impossible.
  • Page 28 BASIC TUNING ADJUSTMENTS Centering Your Servo is bottoming easily over jumps. Damping should be decreased (with If you have removed the servo horn from your Desert Racer’s steering thinner viscosity oil) if the model is hopping over small bumps and feels Important: The shocks are servo, or the servo has been removed for service or cleaning, the unstable.

  • Page 29: Maintaining Your Model

    If the bottom of the shock is leaking, then it is time for a rebuild. The Traxxas rebuild kits for two shocks is part #8455 and #7468X.

  • Page 30: Advanced Tuning Adjustments

    ADVANCED TUNING ADJUSTMENTS Gearing Compatibility Chart: Roll Center From the factory, the Desert Racer is Multi-tool Shock Functions The chart below shows recommended The Unlimited Desert Racer has provisions for adjusting the roll center equipped with pistons with 1.7mm gear combination ranges for your model. geometry of the rear suspension.
  • Page 31 From the factory, the front differential is filled with SAE 30,000W viscosity silicone oil. Only use silicone oil in the differential. Traxxas offers SAE 10,000W and 50,000W viscosity oil (see your parts list). The differential has to be removed from the vehicle and disassembled to change/replace oil.

  • Page 32: Tq Advanced Tuning Guide

    (set to horn (as shown) can also help decrease Restoring Factory Defaults Traxxas Stability Management (TSM) by default, see page 19). Accessing steering sensitivity when driving the programming menu is done by using the menu and set buttons on...
  • Page 33 This is especially handy if you operate multiple equipped with a built-in failsafe This allows you to fine-tune the servo settings to prevent binding vehicles with a single transmitter via Traxxas Link Model Memory. ™ function that returns the throttle...
  • Page 34 Model Lock locked. Press and hold MENU to return to driving mode. The Traxxas Link Model Memory feature can store up to thirty models Note: To unlock a memory, press SET twice at step 5. The LED will (receivers) in its memory. If you bind a thirty-first receiver, Traxxas Link blink rapidly green to indicate the model is unlocked.
  • Page 35 Transmitter is restored to default Press Delete Model C onfirm Deletion One Blink Red Two Blinks Green *Torque Control is a feature designed only for use with the power system in the Traxxas Funny Car Race Replica (Model #6907).
  • Page 36 ADVANCED TUNING GUIDE Set Multi-Function MENU TREE FORMULAS knob for STEERING Press/hold MENU Press SET Press SET to confirm Press/hold MENU SENSITIVITY (Expo) To select functions and make adjustments to the TQi transmitter without green LED blinks red LED blinks green LED blinks (x8) returns to driving mode referencing the Menu Tree, turn your transmitter on, find the function in the...
  • Page 37 Real-Time Telemetry For more information about the Traxxas Link When you equip your model The powerful Traxxas Link app (available in the Apple App Store or on Wireless Module and the with sensors, the Traxxas Link Google Play™) gives you complete control over the operation and tuning Traxxas Link application, of your Traxxas model with stunning visuals and absolute precision.
  • Page 38 ’ 6250 TRAXXAS WAY, McKINNEY, TEXAS 75070 1-888-TRAXXAS 220831 85086-4-OM-EN-R02...

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