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NITRO 4-TEC 3.3 • 37

TQ

i

 ADVANCED TUNING GUIDE

prevent binding caused by the servo moving steering 
or throttle linkages (in the case of a nitro car) farther 
than their mechanical limits. The end point adjustment 
settings you select will represent what you wish to be 
the servo’s maximum travel; the Steering Percentage or 
Braking Percentage functions will not override the End 
Point settings. 

Steering and Throttle Sub-Trim

The Sub-Trim function is used to precisely set the 
neutral point of the steering or throttle servo in the 
event that simply setting the trim knob to “zero” does 
not completely center the servo. When selected, Sub-
Trim allows finer adjustment to the servo output shaft’s 
position for precise setting of the neutral point. Always 
set the Steering Trim knob to zero before making final 
adjustment (if required) using Sub-Trim. If Throttle Trim 
has been previously adjusted, the Throttle Trim will 
need to be reprogrammed to “zero” before making final 
adjustment using Sub-Trim.

Braking Percentage

The Multi-Function knob may also be set to control the 
amount of brake travel applied by the servo in a nitro-
powered model. Electric models do not have a servo-
operated brake, but the Braking Percentage function still 
operates the same way in electric models. Turning the 
Multi-Function knob full clockwise will deliver maximum 
brake throw; turning the knob counter-clockwise reduces 
brake throw (

Note

: Turning the dial counter-clockwise to 

its stop will eliminate all brake action).

Throttle Trim

Setting the Multi-Function knob to serve as throttle trim 
will allow you to adjust the throttle’s neutral position 
to prevent unwanted brake drag or throttle application 
when the transmitter trigger is at neutral.  

Note

: Your transmitter is equipped with a Throttle Trim 

Seek mode to prevent accidental runaways. See the 
sidebar for more information.

Setting Lock

Once you’ve adjusted all of these settings the way you like 
them, you may want to disable the Multi-Function knob 

so none of your settings can be changed. This is especially 
handy if you operate multiple vehicles with a single 
transmitter via Traxxas Link

 Model Memory.

Multiple Settings and the Multi-Function Knob

It is important to note that settings made with the 
Multi-Function knob are “overlaid” on top of each other. 
For example, if you assign the Multi-Function to adjust 
Steering Percentage and set it for 50%, then reassign 
the knob to control Steering Sensitivity, the transmitter 
will “remember” the Steering Percentage setting. 
Adjustments you make to Steering Sensitivity will be 
applied to the 50% steering throw setting you selected 
previously. Likewise, setting the Multi-Function knob to 
“disabled” will prevent the knob from making further 
adjustments, but the last setting of the Multi-Function 
knob will still apply.

TRAXXAS LINK MODEL MEMORY

Traxxas Link Model Memory is an exclusive, patent-
pending feature of the TQi transmitter. Each time the 
transmitter is bound to a new receiver, it saves that 
receiver in its memory along with all the settings  
assigned to that receiver. When the transmitter and 
any bound receiver are switched on, the transmitter 
automatically recalls the settings for that receiver. There 
is no need to manually select your vehicle from a list of 
model memory entries. 

Model Lock

The Traxxas Link Model Memory feature can store up 
to thirty models (receivers) in its memory. If you bind 
a thirty-first receiver, Traxxas Link Model Memory will 
delete the “oldest” receiver from its memory (in other 
words, the model you used the longest time ago will be 
deleted). Activating Model Lock will lock the receiver in 
memory so it cannot be deleted.
You may also bind multiple TQi transmitters to the same 
model making it possible to pick up any transmitter and 
any previously bound model in your collection and simply 
turn them on and drive. With Traxxas Link Model Memory, 
there is no need remember which transmitter goes with 
which model and there is never a need to have to select 

any model from a list of model memory entries. The 
transmitter and receiver do it all for you automatically.

To activate Model Lock:

1. Switch on the transmitter and receiver you wish to lock. 
2. Press and hold MENU. Release when the status LED 

blinks green.

3. Press MENU three times. The status LED will blink green 

four times repeatedly.

4. Press SET. The status LED will blink green in single- 

flash intervals. 

5. Press SET once. The status LED will blink red  

once repeatedly. 

6. Press MENU once, the LED will blink red  

twice repeatedly. 

7. Press SET, the LED will blink rapidly green.  

The memory is now locked. Press MENU and SET to 
return to driving mode. 

 

Note

: To unlock a memory, press SET twice at step 5. 

The LED will blink rapidly green to indicate the model 
is unlocked. To unlock all models, press MENU twice at 
step 6 and then press SET.

To delete a model:

At some point, you may wish to delete a model you no-
longer drive from the memory.
1. Switch on the transmitter and receiver you wish  

to delete. 

2. Press and hold MENU. Release when the status LED 

blinks green.

3. Press MENU three times. The status LED will blink green 

four times repeatedly.

4. Press SET once. The status LED will blink green  

once repeatedly. 

5. Press MENU once. The status LED will blink  green  

twice repeatedly. 

6. Press SET. The memory is now selected to be deleted.  

Press SET to delete the model. Press and hold MENU to  
return to driving mode.

Содержание Nitro 4-Tec 3.3 48077

Страница 1: ...MODEL 48077 owner s manual...

Страница 2: ...d fashioned procedures could reduce engine performance and longevity 3 4 5 6 7 8 14 29 30 33 35 BEFORE YOU PROCEED SAFETY PRECAUTIONS TOOLS SUPPLIES AND REQUIRED EQUIPMENT ANATOMY OF THE NITRO 4 TEC Q...

Страница 3: ...axxas by phone or online at BuyTraxxas com You can save time along with shipping and handling costs by purchasing replacement parts from your local dealer Do not hesitate to contact us with any of you...

Страница 4: ...ll fuel out of the reach of children at all times Do not place fuel containers on the ground where children can reach them while you are driving Model engine fuel is flammable Never allow smoking spar...

Страница 5: ...dle nose pliers Philips screwdriver Soldering iron For more information on radio system batteries see Use the Right Batteries on page 10 Glow plug wrench Extra glow plug 1 5mm L wrench 2 0mm T wrench...

Страница 6: ...iver Bearing Block Air Filter Pipe Header TRX 3 3 Racing Engine see pg 15 for details Pressure Line Fuel Line EZ Start Motor EZ Start Plug Shock Tower Body Mount Chassis lower On Off Switch Antenna Mo...

Страница 7: ...engine See page 24 Install the body mounts and foam bumper Learn to use the correct starting procedure for your TRX 3 3 5 Install batteries in the transmitter See page 10 13 Break in your engine See...

Страница 8: ...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 developing a memory...

Страница 9: ...channels for controlling your throttle and steering The receiver inside the model has 5 output channels Your model is equipped with two servos and a receiver Nitro 4 Tec Wiring Diagram Channel 1 CH1...

Страница 10: ...on over the battery holder to prevent fuel contamination 4 Install the battery holder into the car and secure it to the top plate with the reusable zip tie Make sure the battery holder is secure in th...

Страница 11: ...ble 50 50 Allows equal travel for both acceleration and reverse 70 30 Allows more throttle travel 70 and less reverse travel 30 50 50 is the required setting for the Nitro 4 Tec 3 3 with TRX 3 3 Racin...

Страница 12: ...5 Do not attempt to operate the model if there is any problem with the radio system or any external interference with your radio signal at your location Higher Speeds Require Greater Distance The fast...

Страница 13: ...large amount of steering wheel travel results in a smaller amount of servo travel The farther you turn the knob the more pronounced the effect becomes Decreased steering sensitivity may be helpful wh...

Страница 14: ...premature engine wear and failure is lack of care and maintenance BREAK IN The TRX 3 3 Racing Engine is manufactured to exacting tolerances and requires a specially designed break in procedure to acc...

Страница 15: ...rive Unit EZ Start Motor Engine Mount Low Speed Needle Throttle Arm Clutch Bell Flywheel Carburetor Air Intake Fuel Intake High Speed Needle Idle Speed Screw EZ Start Plug Positive Wire Negative Wire...

Страница 16: ...he engine s body that contains all of the running mechanical components Crankshaft The main shaft of the engine that holds the reciprocating assembly Cooling fins The cooling fins are milled into the...

Страница 17: ...the first level of air filtration for the engine The majority of dirt and debris will be stopped by this filter Clean re oil and replace this filter after every hour of run time Always use both the p...

Страница 18: ...ical limitations Engines are designed 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 effi...

Страница 19: ...gine will be damaged Engine damage or wear due to dirt ingestion is easy to detect and one of the top causes of premature engine failure Air Filter Cleaning Instructions 1 Remove the air filter from t...

Страница 20: ...r fuel ratio Warmer air is less dense fewer air molecules and therefore needs less fuel to maintain the correct air fuel ratio The tuning needles are there to adjust how much fuel is made available fo...

Страница 21: ...ctory settings until after the engine is started and running and you have been able to observe the engine running to assess what minor adjustments may be required to compensate for fuel temperature an...

Страница 22: ...tery in place when the battery is installed in the compartment C 4 Install the battery into the compartment and press the wires securely into place 5 Snap the battery compartment door back on and lock...

Страница 23: ...the piston and the top of the sleeve This is a tapered fit and a tight piston sleeve fit on initial startup is desirable for those who want the best performing engine Make sure you are using a good q...

Страница 24: ...xas glow plugs handy The break in process can cause deposits to form on the plug leading to plug failure Follow the instructions exactly for each of the first 5 tanks of fuel Starting Your TRX 3 3 Rac...

Страница 25: ...3 When the fuel tank is nearly 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 fu...

Страница 26: ...it is over 220 F and needs to 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 Fahrenheit If...

Страница 27: ...turn counterclockwise and retest This 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...

Страница 28: ...nfluence on engine temperature is air temperature Expect the engine temperature to vary almost in direct proportion to air temperature Assuming you tuned the engine for the same maximum performance ea...

Страница 29: ...n It is intended for expert drivers only Experience with nitro powered radio controlled models is required The driver must exercise all caution and accept full responsibility for their own safety and...

Страница 30: ...nch through the clutch drum and into the adjustment set screw See diagram 5 Turn the adjustment screw clockwise to raise the shift point later shifts Be careful not to overtighten the adjustment screw...

Страница 31: ...acers to increase stiffness use stiffer springs Adjust the ride height so that the suspension arms are slightly above being parallel to the ground Note that changes in ride height will occur when the...

Страница 32: ...ver the gears with a cloth to protect the teeth Using the pliers unscrew the gears counter clockwise 4 New clutch gears simply screw onto the clutch bell Reinstall the clutch bell and caphead screw on...

Страница 33: ...the quality and frequency of the engine maintenance Inspect the connecting rod after 3 gallons of fuel have been used Piston sleeve The life of the piston and sleeve will vary greatly with how the eng...

Страница 34: ...el will turn unsticking the piston from the sleeve 3 Put two or three drops of light machine oil into the glow plug hole to lubricate the piston and sleeve Do not use too much oil Excess oil will hydr...

Страница 35: ...cles it has bound to and what settings were used for each up to 30 models total Traxxas Link provides a visual interface to name the models customize their settings attach profiles and lock them into...

Страница 36: ...hing fast green 0 1 sec on 0 15 sec off Throttle Trim Seek Mode Turn the Multi Function knob right or left until the LED stops flashing See sidebar for more information Flashing medium red 0 25 sec on...

Страница 37: ...hrow setting you selected previously Likewise setting the Multi Function knob to disabled will prevent the knob from making further adjustments but the last setting of the Multi Function knob will sti...

Страница 38: ...dpoint and press set to save To reset max throw Let go of controls and press SET The menu tree below shows how to navigate through the TQi transmitter s various settings and functions Press and hold M...

Страница 39: ...ss SET red LED blinks x3 Press MENU twice red LED blinks x3 Turn steering wheel to desired max left and right travel x8 Press SET to save each position Turn steering wheel to test settings IF END POIN...

Страница 40: ...6200 TRAXXAS WAY MCKINNEY TEXAS 75070 1 888 TRAXXAS 140408 KC2075 R00 MODEL 48077 owner s manual...

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