Traxxas Nitro 4-Tec 3.3TM all-wheel-drive 4809 Owner's Manual
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Traxxas Nitro 4-Tec 3.3TM all-wheel-drive 4809 Owner's Manual

All-wheel-drive nitro supercar
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MODEL 4809
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Summary of Contents for Traxxas Nitro 4-Tec 3.3TM all-wheel-drive 4809

  • Page 1 MODEL 4809 owners manual...
  • Page 2 Introduction Thank you for purchasing the Traxxas Nitro 4-Tec 3.3 Before You Proceed nitro supercar. The Nitro 4-Tec 3.3 was designed to deliver extreme power for expert drivers. It is the most powerful Ready-To-Race Safety wheel-drive nitro supercar ever conceived. The incredible TRX 3.3 Precautions Racing Engine is bigger, faster, and puts out a whopping 60% more peak horsepower compared to the legendary, award-winning TRX 2.5.

  • Page 3: Before You Proceed

    Full-speed operation requires a large, smooth running area free of obstacles and closed off to pedestrian and automobile traffic. This product is not designed for children under 16. Responsible adult supervision is required during operation and maintenance.

  • Page 4: Safety Precautions

    Full-speed operation requires a large, smooth running area free of obstacles and closed off to pedestrian and automobile traffic. Model engine fuel is dangerous and highly poisonous. Not a Toy! For Expert Drivers all directions and precautions printed on the fuel container.

  • Page 5: Tools, Supplies, And Required Equipment

    Tools, Supplies, and Required Equipment Your Nitro 4-Tec 3.3 comes with a set of specialty metric tools. You’ll need to purchase other items, available from your hobby dealer, to operate and maintain your model. Supplied Tools and Equipment Turnbuckle wrenches U-joint wrench 1.5mm “L”...
  • Page 6 Anatomy of Your Nitro 4-Tec 3.3 Chassis (lower) TRX 3.3 Racing Engine see pg. 18 for details Header Racing Tires Shock Tower Body Mount EZ-Start Plug Rear Differential Fuel Line Filter Center Drive Belt Rear Suspension Arm Throttle/Brake Servo Two-Speed Transmission Fuel Tank 6 •...

  • Page 7: Quick Start: Getting Up To Speed

    Quick Start: Getting up to Speed The following guide is an overview of the procedures for getting your Nitro 4-Tec 3.3 running, from opening the box to breaking in and tuning your engine. Refer to the pages indicated for details on each step. Look for the Quick Start logo on the bottom corners of Quick Start pages. 1.

  • Page 8: Applying The Decals

    Decorating Installing your Nitro 4-Tec 3.3 Body Applying The Decals The main decals have already been applied to your Nitro 4-Tec. The extra decals provided are die-cut for easy removal. Use a hobby knife to lift the corner of a decal and remove it from the backing.
  • Page 9 The Traxxas TQ Radio System Your Nitro 4-Tec (model 4809) is equipped with the TQ Radio System. The TQ is a 2-channel system that provides high-power output up to a quarter mile and control for two servos. The Nitro 4-Tec makes use of two channels for throttle/brake and steering. TQ Transmitter Throttle Neutral Adjust Antenna...
  • Page 10 The Traxxas TQ Radio System Radio System Terminology Please take a moment to familiarize yourself with these radio-system Learn terms related to the terms. They will be used throughout this manual. TRX 3.3 Racing Engine beginning on page 19. Channel - The 27 MHz frequency band is divided into 6 channels so that up to six models can be operated simultaneously.

  • Page 11: Installing Transmitter Batteries

    Installing Transmitter Batteries Your TQ transmitter uses 8 AA batteries. The battery compartment is located in the base of the transmitter. 1. Remove the battery compartment door by pressing the tab and lifting the door up. 2. Install the batteries in the correct orientation as indicated in the battery compartment.

  • Page 12: Installing The Receiver Batteries

    The Traxxas TQ Radio System Installing the Receiver Batteries The radio receiver in your Nitro 4-Tec uses 4 AA batteries. The receiver If you use rechargeable batteries in your receiver, battery holder is located underneath the top plate, just to the right of be aware that when they the fuel tank.
  • Page 13 Setting up the Antenna You must install the antenna mast (tube) before you operate your Nitro 4-Tec. You’ll find the plastic antenna tube and tip in the bag with your manuals and documentation. 1. Locate the black antenna wire that exits the receiver cover. The receiver cover is located between the fuel tank and the tuned pipe.
  • Page 14 The Traxxas TQ Radio System TQ Radio System Controls TQ Radio System Adjustments In addition to the electronic throttle and steering trim controls, your radio system features throttle neutral adjustment and servo reversing switches. Throttle Neutral Adjustment The throttle neutral adjustment is located on the transmitter face and controls the forward/reverse travel of the throttle trigger.
  • Page 15 TQ Radio System Rules Each time you prepare to run your Nitro 4-Tec, you must clear your frequency to be sure no one else in the area is using the same channel as you. There are six possible channels, numbered 1 through 6.
  • Page 16 The Traxxas TQ Radio System Using the TQ Radio System The TQ Radio System was pre-adjusted at the factory. The adjustment When the engine is running, should be checked before running the model, in case of movement do not use the throttle trim during shipping.

  • Page 17: The Trx 3.3 Racing Engine

    The TRX 3.3 Racing Engine Introduction The TRX 3.3 Racing Engine is the next generation of TRX nitro power. The larger displacement and advanced porting generate class-leading horsepower while still maintaining the TRX Racing Engine characteristics of broad, linear power delivery and ease of tuning. Focused engineering and rigorous testing have yielded unprecedented power and uncompromising performance that turns ready-to-run into Ready-To-Race®...
  • Page 18 The TRX 3.3 Racing Engine TRX 3.3 Racing Engine Illustrated Air Filter Housing 18 • Nitro 4-Tec 3.3 Air Filter Base Idle Speed Screw High-Speed Needle Fuel Intake Air Intake Carburetor Clutch Bell Crankshaft EZ-Start Controller Pressure Line Fuel Tank Head Protector PowerTune ™...
  • Page 19 Terms to Know You’ll find these Nitro R/C engine terms throughout this section of the manual. .15 - .15 or “15” refers to the displacement of the engine. The TRX 2.5 Racing Engine is .15 cubic inches or 2.5 cubic centimeters (cc). The name “TRX 2.5”...
  • Page 20 The TRX 3.3 Racing Engine Glow plug driver - This tool clips onto the glow plug and supplies the required voltage to light the glow plug element. It is also called an igniter. EZ-Start equipped engines do not require this separate tool. Header - The aluminum tube that connects the exhaust system to the engine exhaust port.
  • Page 21 The Fuel Use the Right Fuel It’s imperative that you use the correct fuel in your TRX 3.3 Racing Engine for maximum performance and engine life. Traxxas Top Fuel ™ should be used to ensure correct engine lubrication, performance, and ease of tuning. Traxxas Top Fuel has been proven in thousands of engines, so you can count on it every day for great performance.

  • Page 22: The Air Filter

    The TRX 3.3 Racing Engine Filling the Fuel Tank Use a fuel dispensing bottle (Traxxas Top Fueler, part# 5001) to put fuel into the Nitro 4-Tec’s fuel tank. To fill the fuel bottle, squeeze the air out, insert the dispenser tip into the fuel can, and release your grip on the bottle.
  • Page 23 The Carburetor Understanding the Carburetor adjustments The carburetor performs several functions. It controls the engine’s speed by restricting the intake of air and fuel into the engine. It atomizes the fuel (suspends the fuel droplets in the air) and also controls the air/fuel ratio of the mixture entering the engine (how much air for a given amount of fuel).
  • Page 24 The TRX 3.3 Racing Engine See Tuning Your TRX 3.3 Racing Engine on page 29 for complete information on adjusting the air/fuel mixture and idle speed. Factory Needle Settings If your factory preset carburetor adjustments have been tampered with, use the following settings: •...
  • Page 25 The Traxxas EZ-Start Electric Starting System The Traxxas EZ-Start brings the convenience of push-button electric engine starting to your Nitro 4-Tec. The EZ-Start consists of a hand-held control unit and an on-board motorized starter. Power for the EZ-Start system comes from a 7.2-volt rechargeable battery pack installed in the hand-held control unit (battery sold separately).
  • Page 26 The TRX 3.3 Racing Engine Using the EZ-Start Your EZ-Start controller plugs into a 4-prong receptacle in the center of When the EZ-Start the rear deck on your Nitro 4-Tec. When the red button on the controller controller is in protection mode, wait at least three is pressed, the EZ-Start motor begins to spin the engine and power from minutes before attempting...
  • Page 27 Breaking in Your TRX 3.3 Racing Engine The TRX 3.3 Racing Engine uses a ringless, aluminum-brass-chrome (ABC) piston/sleeve construction. This type of engine design relies on a very precise running fit between the piston and sleeve for cylinder sealing. Engine break-in is necessary to allow the piston and sleeve to develop an extremely precise fit and optimum cylinder sealing.
  • Page 28 The TRX 3.3 Racing Engine Tank 1 1. Drive the model with the body off. 2. Driving procedure: Gently pull the throttle trigger to 1/4 throttle over High Altitude Operation: If you live in a high a 2-second count. Then gently apply the brake to stop. Count the two altitude region (5000 or seconds out while accelerating: one thousand one, one thousand two, more feet above sea level),...
  • Page 29 Winter Break-in Tips During the break-in process, the piston and sleeve wear into each other to form a precise fit. The engine needs to heat up to a temperature around 200 to 215 degrees to allow the piston and sleeve to achieve this fit properly. A precise fit between these two components is critical for proper compression, and optimum performance.
  • Page 30 The TRX 3.3 Racing Engine Before you begin tuning, the engine should be warmed up to its normal operating temperature and running slightly rich. All final tuning adjustments When adjusting the low must be made to the engine at its normal operating temperature. You can speed fuel mixture, it is tell the engine is running rich by noting any of the following: very important to make...
  • Page 31 Idle Speed Adjustment Once the high and low-speed mixtures have been set, reduce the idle speed to the minimum reliable idle speed. Remember, this adjustment should be made while the engine is running at normal operating temperature. 1. Turn the throttle trim on the transmitter so the brakes are applied (note its original position).
  • Page 32 Full-speed operation requires a large, smooth running area free of obstacles and closed off to pedestrian and automobile traffic. This product is not designed for children under 16. Responsible adult supervision is required during operation and maintenance.
  • Page 33 Adjusting Your Nitro 4-Tec 3.3 Once you become familiar with driving your Nitro 4-Tec 3.3, you may wish to make adjustments for better driving performance. Adjusting the Shift Point The Nitro 4-Tec comes equipped with a two-speed transmission. When the shift point on this transmission is adjusted correctly, it will maximize acceleration, improve drivability, and minimize lap times.
  • Page 34 Adjusting Your Nitro 4-Tec 3.3 Toe In Set the steering trim on your transmitter to neutral. Now, adjust your At no time should the tie rods so that both wheels are pointing straight ahead and are body of the car strike the ground or interfere with parallel to each other (0 degrees toe in).

  • Page 35: Changing The Clutch Bell Gears

    Gear Ratios Another Nitro 4-Tec 3.3 feature is the ability to change the gear ratios. Currently, there are three optional gear ratios for the Nitro 4-Tec. The stock gear ratio will provide very high (70+ MPH) top speeds. The following gear ratio chart shows the available combinations with optional spur gears and clutch bells.
  • Page 36 Maintaining and Storing Your Nitro 4-Tec 3.3 Your Nitro 4-Tec requires timely maintenance in order to stay in top running condition. Neglecting the maintenance could allow dirt, If the engine is worn or deposits, and moisture to build up inside the engine leading to internal damaged enough to require engine failure.
  • Page 37 5. Open the throttle fully and spray a one-second burst of WD-40 into the carburetor and into the glow plug hole (Caution! Wear safety glasses to prevent spray from getting into your eyes). If you are using after-run oil, follow the manufacturer’s instructions. 6.
  • Page 38 Troubleshooting Your Nitro 4-Tec 3.3 The following section addresses some very basic engine and radio questions you may have about your Nitro 4-Tec 3.3. Most questions arise from simple user errors or minor adjustments that are easy to correct. If you can’t find a solution for your Nitro 4-Tec here, then visit our Web site at www.Traxxas.com and click on the Customer Support menu.
  • Page 39 Engine spins but will not start: If the engine is spinning but will not start, first check to make sure that both the motor and glow plug LEDs on the EZ-Start controller light when the button is depressed. If the glow plug LED does not light, make sure the blue glow plug wire is tightly connected and is not damaged in any way.
  • Page 40 Index ABC, 19 Adjustments, 33 After-run procedure, 36 Air density, 30 Air filter, 6, 18, 19, 22 cleaning, 22 foam, 19 Air intake, 18 Air/fuel mixture, 23 Air/fuel ratio, 23 Alignment, 33 Altitude, 28 Ambient temperature, 31 Antenna (receiver), 9, 13 mount, 6 Antenna (transmitter), 9 Atmospheric conditions, 23, 31...
  • Page 41 Fuel (Top Fuel), 5, 19, 21, 37 O-ring, 20 break-in, 27 On/Off Switch, 6 dispensing bottle, 5 Pinch test, 30 flow, 21, 23 Pipe, 6, 18, 20 handling, 21 hanger, 6 other fuels, 21 Piston, 20 unburned, 26, 36 maintenance, 36 Fuel intake, 18 stuck at “top dead center”...
  • Page 42 Notes 42 • Nitro 4-Tec 3.3...
  • Page 43 Notes Nitro 4-Tec 3.3 • 43...
  • Page 44 owners manual MODEL 4809 1 100 Klein Road, Plano Texas 75074 1-888-TRAXXAS 060602...

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