TR A X X AS • 3
on 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 the trim controls on your transmitter seem off, you may need to
recenter your servo. Additionally, whenever your servo has been
removed for service or cleaning, it must be re-centered prior to
installation in the model.
1. Disconnect 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 crystal.
3. Place fresh “AA” batteries in the transmitter and turn the transmitter
power switch on.
4. Turn the throttle and steering trim adjustments on the transmitter
to the center “0” position.
5. Disconnect motor wires “A” and “C” (
see page 11
). Connect a fresh
battery pack to the speed control and turn on the ESC (
see page 18
).
The servo will automatically jump to its center position. The servo
horn may now be installed onto the servo output shaft.
6. 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. Repeat 1-6 if necessary.
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
