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TQ
ADVANCED TUNING GUIDE
i
Your Traxxas transmitter has a programmable Multi-Function knob
that can be set to control various advanced transmitter functions (set
to Cruise Control by default, see page 17). Accessing the programming
menu is done by using the menu and set buttons on the transmitter and
observing signals from the LED. An explanation of the menu structure
follows on page 34. Experiment with the settings and features to see if
they can improve your driving experience.
Steering Sensitivity (Exponential)
The Multi-Function knob on the TQi transmitter can be programmed to
control Steering Sensitivity (also known as exponential). The standard
setting for Steering Sensitivity is "normal (zero exponential)," with
the dial full left in its range of travel. This setting provides linear servo
response: the steering servo's movement will correspond exactly
with the input from the transmitter's steering wheel. Turning the
knob clockwise from center will result in "negative exponential" and
decrease steering sensitivity by making the servo 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 term "exponential"
comes from this effect; the servo's travel changes exponentially
relative to the input from the steering wheel. The exponential effect is
indicated as a percentage—the greater the percentage, the greater the
effect. The illustrations below show how this works.
Normal Steering Sensitivity (0%
exponential):
In this illustration, the steering
servo's travel (and with it, the
steering motion of the model's
front wheels) corresponds
precisely with the steering wheel.
The ranges are exaggerated for
illustrative purposes.
Decreased Steering Sensitivity
(Negative Exponential):
Turning Range
By turning the Multi-Function knob
at Transmitter
clockwise, the steering sensitivity of
the model will be decreased. Note
that a relatively 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 when driving on low-traction
surfaces and when driving at high
speed. The ranges are exaggerated
for illustrative purposes.
Throttle Sensitivity (Throttle Exponential)
The Multi-Function knob can be set to control Throttle Sensitivity.
Throttle Sensitivity works the same way as Steering Sensitivity, but
applies the effect to the throttle channel. Only forward throttle is
affected; brake/reverse travel remains linear regardless of the Throttle
Sensitivity setting.
Steering Percentage (Dual-Rate)
The Multi-Function knob can be set to control the amount (percentage)
of servo travel applied to steering. Turning the Multi-Function knob
fully clockwise will deliver maximum steering throw; turning the
knob counterclockwise reduces steering throw (Note: turning the dial
counterclockwise to its stop will eliminate all servo travel). Be aware that
the steering End Point settings define the servo's maximum steering
throw. If you set Steering Percentage to 100% (by turning the Multi-
Function knob fully clockwise), the servo will travel all the way to its
selected end point, but not past it. Many racers set Dual-Rate so they
have only as much steering throw as they need for the track's tightest
turn, thus making the model easier to drive throughout the rest of the
course. Reducing steering throw can also be useful in making a model
easier to control on high-traction surfaces, and limiting steering output
for oval racing where large amounts of steering travel are not required.
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 counterclockwise reduces brake throw (Note: Turning the dial
counterclockwise 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:
Effective Turning
Your transmitter is equipped with a Throttle Trim Seek Mode to prevent
Range on Model
accidental runaways. See the sidebar for more information.
Traxxas Stability Management (TSM)
The Multi-Function knob on the TQi
transmitter can be programmed to
control Traxxas Stability Management
or TSM. TSM allows you to experience all the speed and acceleration that
was engineered into your Traxxas model by helping you to maintain
control of the vehicle in low-traction situations or over rough terrain. TSM
also dramatically improves braking control and makes corrections for you,
without intruding on your fun, or creating unexpected side effects.
Starting Over:
Restoring Factory Defaults
When programming your TQi
transmitter, you may feel the
need to start over with a clean
slate. Follow these simple steps
to restore the factory settings:
1. Turn the transmitter off.
2. Hold both MENU and SET.
3. Turn the transmitter on.
4. Release MENU and SET.
The transmitter LED will
blink red.
5. Press MENU 6 times. The
transmitter LED will blink
red 7 times repeatedly.
6. Press SET to clear settings.
The LED will turn solid
green and the transmitter is
restored to default.
TRX-6 • 31
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