background image

T-MAXX • 29

INTRODUCTION

Your TRX 2.5 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. Before 
you go on, here are some important precautions to keep in mind. 

• 

Don’t run your T-Maxx 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. Small amounts of moisture 
can cause electronics to fail and loss of control over your T-Maxx. 
Snow is frozen water. Do not drive the T-Maxx in snow or the 
electronics could be damaged by water. 

•  The TRX 2.5 Racing Engine is extremely powerful. Remember to 

apply the throttle gradually to prevent loss of control. T-Maxx is 
very fast and responsive and is intended for experienced drivers. 
Do not drive over the limits of your reflexes and ability. Drive with 
caution at all times and gradually build up your ability to maintain 
control at T-Maxx’s upper performance limits.

•  Don’t hold T-Maxx off the ground and rev the engine excessively  

with no load on the engine. This practice could result in internal 
engine damage. Avoid over-revving the engine when T-Maxx is 
airborne after a jump.

•  Avoid excessive high-speed running for extended periods of time 

or over long distances. This could cause the engine to build up 
enough speed to exceed maximum safe RPM limits.

•  Don’t drive your T-Maxx with drivetrain damage of any kind. The 

engine could be damaged due to overloads caused by drivetrain 
friction, or over-revving caused by loose or missing parts. 

•  Don’t tow anything with your T-Maxx. The engine is cooled by airflow 

created by speed. Towing creates a high load on the engine, and at 
the same time limits cooling of the engine due to low vehicle speed.

•  If your T-Maxx gets stuck, stop driving immediately. Move the 

vehicle and then continue driving.

•  Never turn off the radio system while the engine is running. The 

truck could run out of control.

Forward and Reverse Operation

Forward and reverse gears are selected 

with the shift button located in the 
transmitter handle grip. The switch 
is normally in the down, or forward, 
position. 
•  To shift into reverse, bring your 

T-Maxx to a 

complete stop 

and push 

the shift button up. Accelerate to 
engage the gear. 

•  To return to forward gear, repeat the 

same procedure but move the shift button down.

•  T-Maxx will not shift between forward and reverse unless the truck 

is stopped. If it will not shift, then refer to the troubleshooting 
section on www.Traxxas.com or call Traxxas support.

Driving Tips

•  Monster trucks by design have a high center of gravity that 

requires a different driving technique. To prevent rollovers, slow 
down as you approach turns and then apply moderate throttle 
through the turns. This technique will help T-Maxx grab the surface 
and turn sharper.

•  Do not apply brakes and turn the wheel at the same time. You 

could tip the truck over.

•  When jumping, apply some throttle while T-Maxx is in the air to 

keep the truck’s nose up and land level on all 4 wheels. Be careful 
not to over-rev the engine or land at full throttle. Either could 
seriously damage your T-Maxx. If the nose of the truck is too high, 
then quickly tap the brake to level the truck in the air.

•  Drive over large obstacles (such as curbs and rocks) at an angle, 

instead of head on. This will allow the suspension to articulate and 
absorb the impact much easier.

•  Even though T-Maxx is capable of high speed in reverse, it is very 

difficult to control while driving in reverse. Limit your reverse 
speed to prevent crashing or flipping your T-Maxx.

•  Change or clean your air filter element after each hour of running. 

This is critical for the life of your engine. Running time includes the 
engine break-in period.

DRIVING YOUR T-MAXX

Shift Reverse

Shift Forward

16

49104-1-KC2230-R00-T-Maxx-Operating.indd   29

10/30/14   5:10 PM

Summary of Contents for T-MAXX 49104-1

Page 1: ...6200 TRAXXAS WAY McKINNEY TX 75070 1 888 TRAXXAS 141030 KC2230 R00 MODEL 49104 1 MODEL 49104 1 owner s manual owner s manual 49104 1 KC2230 R00 T Maxx Operating indd 36 37 10 30 14 2 13 PM...

Page 2: ...new T Maxx 3 4 5 6 7 8 14 29 30 33 35 BEFORE YOU PROCEED SAFETY PRECAUTIONS TOOLS SUPPLIES AND REQUIRED EQUIPMENT ANATOMY OF THE T MAXX QUICK START GETTING UP TO SPEED TRAXXAS TQ 2 4GHz RADIO SYSTEM...

Page 3: ...ands of registered members in our online community at Traxxas com Traxxas offers a full service on site repair facility to handle any of your Traxxas service needs Maintenance and replacement parts ma...

Page 4: ...well ventilated area Never run the engine indoors Do not operate your T Maxx at night or anytime your line of sight to the model may be obstructed or impaired in any way Never operate your T Maxx in c...

Page 5: ...information on radio system batteries see Use the Right Batteries on page 10 8 AA alkaline batteries Traxxas Top Fuel see page 18 Small flat blade screwdriver for tuning 1 8 inch blade After run oil t...

Page 6: ...urnbuckle Throttle Brake Servo Receiver Box Transmission Air Filter Tuned Pipe Header TRX 2 5 Racing Engine see pg 15 for details Pressure Line Fuel Line EZ Start Motor EZ Start Plug Bulkhead Shock To...

Page 7: ...5 Decal and Install the body See page 8 14 Break in your engine See page 24 You will need to use the body during break in so it s best to apply any additional decals before you use the body Follow th...

Page 8: ...ottle Servo Channel 3 Shifting Servo TQ 2 4GHz TRANSMITTER Steering Trim Shifting Switch Throttle Trigger Steering Wheel Power Switch Battery Compartment Set Button Red Green Status LED Applying The D...

Page 9: ...ginal rechargeable hobby pack NiCad batteries have very high current handling high capacity and can last up to 1000 charging cycles Good charging procedures are required to reduce the possibility of d...

Page 10: ...your model it is important to stop at the first sign of weak receiver batteries Visible warning signals include sluggish steering response and shortened radio range INSTALLING TRANSMITTER BATTERIES Yo...

Page 11: ...ng only Reversing a channel reverses the direction of the corresponding servo For example if you turn the steering wheel to the right and the model turns left Channel 1 would need to be reversed to co...

Page 12: ...es out When the throttle trigger is pushed all the way forward the brake should lock 7 Operate the shift button on the transmitter and check for rapid operation of the shifting servo Push the shift bu...

Page 13: ...TRANSMITTER LED CODES LED Color Pattern Name Notes Solid green Normal Driving Mode See page 11 for information on how to use the transmitter controls Slow red 0 5 sec on 0 5 sec off Binding See this...

Page 14: ...premature engine wear and failure is lack of care and maintenance break in The TRX 2 5 Racing Engine is manufactured to exacting tolerances and requires a specially designed break in procedure to acc...

Page 15: ...Mount Low Speed Needle Throttle Arm Clutch Bell Flywheel Carburetor Air Intake Fuel Intake High Speed Needle Idle Speed Adjustment Screw EZ Start Plug Positive Wire Negative Wire Fuel Line Fuel Tank T...

Page 16: ...he engine that holds the reciprocating assembly Cooling fins The cooling fins are milled into the cylinder head and crankcase and cause heat to be drawn away from the engine Heat is removed when it di...

Page 17: ...ngine to have the required compression for combustion Port Ports are openings in the sleeve that allow atomized fuel to enter the combustion chamber and burned exhaust gases to exit The shape and loca...

Page 18: ...ed to run best within a range of nitro percentages How the engine is ported the size of the combustion chamber and other factors determine how much nitro can be efficiently used in the engine The TRX...

Page 19: ...ter anytime the engine is running Even if you can t see dirt on the filter it is present inside the foam after any amount of run time If you exceed the recommended cleaning intervals your engine will...

Page 20: ...needles are there to adjust how much fuel is made available for the carburetor to mix with the available air atomization The Fuel Mixture Needles The amount of fuel metered and atomized by the carbure...

Page 21: ...engine running to assess what minor adjustments may be required to compensate for fuel temperature and altitude Adjustments are usually made in 1 8 or 1 16 turn increments If the engine sticks at top...

Page 22: ...een LED on the charger indicates the charge progress 3 Disconnect the battery when charging is complete When the battery is fully charged the LED will light solid green The battery will be warm in you...

Page 23: ...nk the engine over at the appropriate RPM to keep the piston from sticking at top dead center TDC A new engine will typically have a tight fit between the piston and the top of the sleeve This is a ta...

Page 24: ...e or clean your air filter after break in Follow the instructions exactly for each of the first 5 tanks of fuel Starting Your TRX 2 5 Racing Engine for the First Time Before you start your TRX 2 5 Rac...

Page 25: ...rly empty shut off the engine and refuel From here on you do not need to let the engine cool between tanks Tank 4 1 Driving procedure Gently pull the throttle trigger to full throttle over a 3 second...

Page 26: ...cool down If the water takes a long time or does not evaporate at all then the engine is too cool We do not recommend that you operate your engine below 35 F If you insist on running your vehicle belo...

Page 27: ...setting will extend engine component life Low Speed Fuel Mixture Adjustment The low speed mixture is always set after the high speed needle is correctly adjusted The low speed mixture is set using the...

Page 28: ...almost in direct proportion to air temperature Assuming you tuned the engine for the same maximum performance each day the engine will run about twenty degrees hotter when it s ninety degrees outside...

Page 29: ...mmediately Move the vehicle and then continue driving Never turn off the radio system while the engine is running The truck could run out of control Forward and Reverse Operation Forward and reverse g...

Page 30: ...le As you slowly turn the primary gear shaft counterclockwise the first set screw that becomes visible holds the two speed mechanism on to the shaft Do not loosen this screw The second set screw is th...

Page 31: ...hock angle or spring rates are made You can compensate for ride height changes by changing the pre load spacers on the shocks Adjusting the Suspension The T Maxx has adjustable suspension so that it m...

Page 32: ...ized suspension settings Lower Shock Mounting Positions In the out of the box configuration the shocks are installed in position A on the shock tower and position 2 on the lower suspension arm This se...

Page 33: ...on how the slipper clutch was adjusted and how the T Maxx was used If the slipper will not tighten or you are seeing signs of wear on the face of the gear then the pegs should be replaced Piston sleev...

Page 34: ...EZ Start button for several seconds to clear the engine of excess fuel Do not look into the glow plug hole while the engine is spinning or you could spray fuel into your face 5 Turn the model over an...

Page 35: ...g and idling Only lean the fuel mixture just until the engine will run and idle reliably and then proceed with the break in The contents of different brands of fuel other than Traxxas Top Fuel in comb...

Page 36: ...6200 TRAXXAS WAY McKINNEY TX 75070 1 888 TRAXXAS 141030 KC2230 R00 MODEL 49104 1 MODEL 49104 1 owner s manual owner s manual 49104 1 KC2230 R00 T Maxx Operating indd 36 37 10 30 14 2 13 PM...

Reviews: