MODEL 4907 owner’s manual
INTRODUCTION CONTENTS BEFORE YOU PROCEED.................................................. 2 SAFETY PRECAUTIONS................................................... 3 TOOLS, SUPPLIES AND REQUIRED EQUIPMENT......... 4 ANATOMY OF YOUR T-MAXX 3.3..................................... 5 QUICK START: GETTING UP TO SPEED......................... 6 GLUING THE TIRES AND DECORATING YOUR T-MAXX 3.3.... 6 THE TRAXXAS TQ 2.4GHz RADIO SYSTEM.................... 7 THE TRX 3.3 RACING ENGINE..................................
INTRODUCTION SAFETY PRECAUTIONS All of us at Traxxas want you to safely enjoy your new T-Maxx 3.3. Operate your T-Maxx 3.3 sensibly and with care, and it will be exciting, safe, and fun for you and those around you. Failure to operate your T-Maxx 3.3 in a safe and responsible manner may result in property damage and serious injury. The precautions outlined in this manual should be strictly followed to help ensure safe operation.
TOOLS, SUPPLIES, AND REQUIRED EQUIPMENT T-Maxx 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 “L” wrench set: 1.5mm, 2.0mm, 2.5mm Extra glow plug Antenna nut wrench Glow plug and wheel nut wrench NiMH 7.
ANATOMY OF YOUR T-MAXX 3.3 Hex Hub Skid Plate Bulkhead Axle Carrier Differential Shock Tower Pivot Ball Front Bumper Ultra Shock™ (Oil Damper) Steering Servo Brake Rod On/Off Switch Battery Box Slipper Clutch Spur Gear Fuel Cap EZ-Start Motor Fuel Tank Driveshaft (Half Shaft) Front Suspension Arm Toe Link (Turnbuckle) Throttle/Brake Servo Receiver Box Antenna Mount Chassis Disc Brake Air Filter Transmission Two-Speed Access Plug Tuned Pipe Pressure Line TRX 3.3 Racing Engine see pg.
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 Quick Start entries. The Quick Start Guide is not intended to replace the full operating instructions available in this manual. Please read this entire manual for complete instructions on the proper use and maintenance of your model. 1.
THE TRAXXAS TQ 2.4GHz RADIO SYSTEM INTRODUCTION Your model includes the latest Traxxas TQ 2.4GHz transmitter with Traxxas Link technology. The transmitter’s easy-to-use design provides instant driving fun for new R/C enthusiasts, and also offers a full compliment of pro-level tuning features for advanced users – or anyone interested in experimenting with the performance of their model. The steering and throttle channels feature adjustable Exponential, End Points, and Sub-Trims.
THE TQ 2.4GHz RADIO SYSTEM TQ 2.4GHz radio system Precautions For maximum range, always hold the transmitter so the antenna is in a vertical position (pointing straight up). The transmitter’s antenna can be swiveled and angled to allow for a vertical position if necessary. Do not kink the receiver’s antenna wire. Kinks in the antenna wire will reduce range. DO NOT CUT any part of the receiver’s antenna wire. Cutting the antenna will reduce range.
THE TQ 2.4GHz RADIO SYSTEM TQ 2.4GHz RADIO SYSTEM CONTROLS TQ 2.4GHz Radio System Basic Adjustments Throttle Neutral Adjustment The throttle neutral adjustment is located on the transmitter face and controls the forward/ reverse travel of the throttle trigger. Change the adjustment by pressing the button and sliding it to the desired position. There are two settings available: 50/50: Allows equal travel for both acceleration and reverse.
THE TQ 2.4GHz RADIO SYSTEM Range-Testing the Radio System Before each running session with your model, you should range-test your radio system to ensure that it operates properly. 1. Turn on the radio system and check its operation as described in the previous section. less responsive near neutral, with increasing sensitivity as the servo nears the limits of its travel range. The farther you turn the knob, the more pronounced the change in steering servo movement will be.
THE 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®. The TRX 3.3 Racing Engine takes a total-system approach.
THE TRX 3.3 RACING ENGINE Dyno - Abbreviation for dynamometer. A precise piece of testing equipment that accurately measures engine power and torque output over the engine’s entire rpm range. O-ring - Rubber “O”-shaped ring used as a sealing gasket. EZ-Start - Traxxas on-board electric starting system. The system consists of a hand held starter control unit and an on-board gearbox with an electric motor to spin the engine.
THE TRX 3.3 RACING ENGINE TRX 3.
THE TRX 3.3 RACING ENGINE 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. • Top Fuel is the only fuel which is 100% certified for use in Traxxas engines.
THE TRX 3.3 RACING ENGINE THE AIR FILTER The TRX 3.3 Racing Engine in this model is equipped with a specially designed two-stage air filter to deliver maximum filtering efficiency and performance while protecting your engine from dust and dirt during extended operating conditions. Use only the supplied filter. You will not improve engine performance by switching to an aftermarket filter, and you may risk engine damage due to poor filtration.
THE TRX 3.3 RACING ENGINE Richen Water Valve (Controls Overall Flow) High Speed Needle A “turn” refers to tightening (“turning in”) or loosening (“turning out”) mixture needles. A “full turn” refers to turning the needle 360°, so a “1/2 turn” would be 180°, a “1/4 turn” would be 90°, and so on. Full Turn 360° Start 1/8 Turn 45° 1/4 Turn 90° 3/4 Turn 270° 1/2 Turn 180° Water Nozzle (Controls Fine Flow) Low Speed Needle The maximum possible fuel flow is always controlled by the high-speed needle.
THE TRX 3.3 RACING ENGINE THE TRAXXAS EZ-START® ELECTRIC STARTING SYSTEM 1. Plug the charger into the wall. The LED on the charger should glow green. 2. Connect the included EZ-Start battery pack to the charger output cord. The LED will glow red indicating the battery is charging. 3. The battery should charge for approximately 4 ½ hours. The LED will turn green when the battery is fully charged.
THE TRX 3.3 RACING ENGINE BREAKING IN YOUR TRX 3.3 RACING ENGINE The TRX 3.3 Racing Engine uses a ringless, aluminumbrass-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. Therefore, proper engine break-in is critical to achieving the fastest, most reliable engine performance.
THE TRX 3.3 RACING ENGINE TANK THROTTLE TIME COOL BODY NOTES 1 1/4 2 seconds 15 minutes Off Apply throttle gradually. 2 1/2 2 seconds 15 minutes On Apply throttle gradually. 3 1/2 3 seconds - On Reduce idle speed if necessary. 4 Full 3 seconds - On Do not allow shifting to high gear. 5 Full 5 seconds - On Accelerate over 3 second count, hold for 2 seconds. Tank 2 1. From tank 2 forward, T-Maxx 3.3 should be driven with the body on. 2.
THE TRX 3.3 RACING ENGINE TUNING YOUR TRX 3.3 RACING ENGINE The engine’s performance depends on the fuel mixture. Turn the mixture needles clockwise to lean the fuel mixture and counterclockwise to richen it. Leaning the fuel mixture will increase engine power up to the engine’s mechanical limits. Never run the engine too lean (not enough fuel flow). Never lean the engine until it begins to cut-out or stall.
THE TRX 3.3 RACING ENGINE 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). This ensures that the throttle slide is resting against the idle adjustment screw. 2.
DRIVING YOUR T-MAXX 3.3 Your TRX 3.3 Racing Engine is broken in, the fuel mixture is balanced, and the idle is set…now it’s time to have some fun! This section contains instructions on making adjustments to your T-Maxx 3.3. Before you go on, here are some important precautions to keep in mind. • Don’t run your T-Maxx 3.3 in water, mud, snow, or wet grass. It’s tempting, but water and mud are easily drawn through the air filter and will severely damage the engine.
TUNING ADJUSTMENTS This setting allows for firm suspension and low ride height, increasing the spring force (at the wheel). This setting improves high-speed cornering on smoother terrain by lowering the center of gravity. Body roll, brake dive, and squat are also reduced. SUSPENSION TUNING Shock Mounting Positions Big bumps and rough terrain require a softer suspension with the maximum possible suspension travel and ride height.
TUNING ADJUSTMENTS while thicker oils provide more dampening. Use only 100% pure silicone shock oil to prolong seal life. From the factory, the T-Maxx 3.3 uses 40W oil. The ride height for the T-Maxx 3.3 can be adjusted by adding or removing the clip-on spring pre-load spacers. Note that changes in ride height will occur when changes in shock angle or spring rates are made. You can compensate for ride height changes by changing the pre-load spacers on the shocks.
TUNING ADJUSTMENTS slippage. This will make the truck easier and more forgiving to drive by helping to reduce the amount of wheel spin. Loosening the slipper adjustment can also improve performance on extreme high traction surfaces by preventing the front end from lifting off of the ground when accelerating. Make slipper adjustments in small 1/8 turn increments.
TUNING ADJUSTMENTS acceleration by reducing engine rpm loss when shifting from 1st gear to 2nd gear. The wide ratio gear set is designed for wide open areas and will increase top speed, but reduce acceleration due to greater rpm loss when shifting gears. BRAKE SETUP & ADJUSTMENT T-Maxx 3.3 is equipped with a disc brake that rides on the yoke of the transmission’s front output shaft. The brake is preset at the factory and should not require attention.
MAINTAINING AND STORING YOUR T-MAXX 3.3 Your T-Maxx 3.3 requires timely maintenance in order to stay in top running condition. Neglecting the maintenance could allow dirt, deposits, and moisture to build up inside the engine leading to internal engine failure. The following procedures should be taken very seriously. After each hour of running: • Clean and re-oil the pre-filter air filter element. At every 3-4 hours, also clean and re-oil the primary air filter element.
TROUBLESHOOTING YOUR T-MAXX 3.3 The following section addresses some very basic engine and radio questions you may have about your T-Maxx 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 T-Maxx 3.3 here, then visit our Web site at www.Traxxas.com/support. There you will find a much more extensive and detailed online troubleshooting area. In addition, you may call Traxxas Customer Service at 1-888-TRAXXAS (outside the U.S.
TROUBLESHOOTING YOUR T-MAXX 3.3 Clearing a Flooded Engine If the engine is primed for too long during startup, then it can become flooded with fuel. When the engine is flooded it will no longer turn due to excess fuel in the combustion chamber preventing upward movement of the piston. Use the following procedure to clear a flooded engine: 1. Remove the blue glow plug wire. 2. Remove the glow plug and gasket with the glow plug wrench supplied with your model. A 5/16 or 8mm nut driver will also work. 3.
TQ 2.4GHZ ADVANCED TUNING GUIDE model memory entries. Failsafe Your Traxxas radio system is equipped with a built-in failsafe function that returns the throttle to its last saved neutral position in the event of a signal loss. The LED on the transmitter and the receiver will rapidly flash red.
Press MENU to move through options. Press SET to select an option. MENU TREE The menu tree below shows how to navigate through the TQ 2.4GHz transmitter’s various settings and functions. Press and hold MENU to enter the menu tree, and use the following commands to navigate through the menu and select options. Note: The transmitter is “live” during programming so you can test the settings real time without having to exit the menu tree.
owner’s manual MODEL 4907 1100 Klein Road, Plano Texas 75074 1-888-TRAXXAS 091221 KC1251-R00
