User's Manual
TRAXXAS
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25
hard, dry surfaces. In loose dirt, a tire with large spikes should
perform better. See your parts list for accessory wheels and tires.
Adjusting the Slipper Clutch
The model is equipped with an
adjustable slipper clutch which is
built into the large spur gear. The
purpose of the slipper clutch
is to regulate the amount of
power sent to the rear wheels
to prevent tire spin. When
it slips, the slipper clutch
makes a high-pitch, whining
noise. Remove the rubber
slipper clutch plug on the transmission cover in order to adjust the
slipper. Use the 4-way wrench to turn the adjusting nut clockwise to
tighten and counter-clockwise to loosen. Place the model on a high-
traction surface, such as carpet. Adjust the slipper so that you can
hear it slip for approximately two feet from a standing, full throttle
start. (Learn more about adjusting the slipper clutch in the sidebar.)
Centering Your Servo
If you have removed the servo horn from your model’s steering
servo, or the servo has been removed for service or cleaning, the
servo must be re-centered prior to installation of the servo horn or
installation of the servo in the model.
1. Remove the servo horn from the steering servo.
2. Connect the steering servo to channel 1 on the receiver. Connect
the electronic speed control (ESC) to channel 2. The white wire on
the servo lead is positioned towards the receiver’s LED.
3. Turn the transmitter power switch on. Make certain the
transmitter’s batteries are not depleted.
4. Turn the transmitter’s steering trim knob to the center “0”
position.
5. Disconnect motor wires “A” and “C” (see page 13) to prevent the
motor from turning during the next steps. Connect a fresh battery
pack to the speed control and turn on the ESC (see page 17). The
servo’s output shaft will automatically jump to its center position.
6. Install the servo horn onto the servo output shaft. The servo horn
should face toward the center of the chassis and be perpendicular
to the servo body.
7. Check servo operation by turning the steering wheel back and
forth to ensure that the mechanism has been centered properly
and you have equal throw in both directions. Use the transmitter’s
steering trim knob to fine-tune the position of the servo horn so
the model tracks straight when the steering wheel is at neutral.
Stampede VXL Wheelie Bar Set-up
The Traxxas wheelie bar comes standard
with the Stampede VXL. It is available as
a bolt-on accessory (Part #3678) for the
Rustler VXL and Bandit VXL. See your local
hobby dealer for more information.
Changing the position of the wheelie bar
height setting is easiest when installed on
the vehicle. To set the position, unsnap
the upper arms from the cross bars of the
lower arms. Move the upper arms to the
desired location, and then snap the arms
together.
Pos. #1: The highest angle of the wheels
(lowest position on the cross
bars). Allows the vehicle
to tip back the most for
longer wheelies.
Pos. #4: The lowest angle of the wheels
(highest position on the cross
bars). Provides the flattest
launches, reducing the chance of
a wheelie.
Note: Each setting can offer different
results based on the individual ride height
and droop settings of a particular vehicle.
Try to avoid riding on the wheelie bar
wheels during normal driving (this can
happen in the lowest setting with lower
than stock ride heights).
BASIC TUNING ADJUSTMENTS
To achieve a good starting
point for the slipper clutch
in these models, tighten the
slipper clutch adjusting nut
clockwise until the slipper
clutch adjusting spring
fully collapses (do not over
tighten), and then turn the
slipper clutch nut counter-
clockwise one full turn.
Do not run your model with
the slipper clutch adjusting
spring fully compressed. The
minimum recommended
slipper clutch setting is 1/2
turn counter-clockwise from
fully compressed.
Tighten
Loosen
Upper Arms
Position
Cross Bars
Position #1
Position #2
Position #3
Position #4
If you have questions or need technical assistance, call Traxxas at
1-888-TRAXXAS
(1-888-872-9927) (U.S. residents only)