Adjusting The Slipper Clutch - Traxxas Nitro Rustler Operating Instructions Manual

• CHANGING THE CLUTCH BELL AND SPUR GEARS
Remove the 4mm nylon locknut
and the spring from the slipper
clutch. Try to remove the slipper
clutch as one assembly by holding
the pressure plates together with
your thumb and index finger.
Remove the large E-clip on the
clutch shaft and the clutch bell
If you changed the gear ratio, then
you will need to reset the gear
mesh. Loosen the four 3x10mm
caphead screws which hold the
slotted adjusting plates to the
engine mount.
Reinstall the slipper assembly on
the slipper shaft and secure it with

• ADJUSTING THE SLIPPER CLUTCH

The Nitro Rustler 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
in order to prevent rear tire spin. It also reduces the shock trans-
ferred to the drive components when the truck is jumped. When it
slips, the slipper clutch makes a high-pitch chirping noise, which
you may be able to hear over the engine noise. Use a 5mm
wrench to turn the nut in until it stops. Now, turn the nut back out
one half turn. When running on pavement, set the clutch so that
it is tighter. When running on dirt, slightly loosen the adjusting nut
to help reduce tire spin. Do not allow the slipper clutch to
become too loose. Excess slippage is apparent when the engine
sounds fast but the truck's acceleration is sluggish. Excess slip-
page will quickly damage the slipper clutch. The clutch should
only slip for 1 or 2 feet from a standing start on a high traction
surface such as rough concrete.
CENTERING YOUR SERVOS
Whenever your radio system has been removed for service or
cleaning, the servos must be re-centered prior to installing the
radio system in the model. If the radio system is installed in the
truck, disconnect the servo horns from the servos.
Connect the steering servo to channel 1 on your receiver and
the throttle servo to channel 2. The white wire on each servo
cable is positioned towards the crystal. Connect the red and
black cable from the battery holder to the "batt" terminal on the
receiver. The red wire is positive and the black wire is negative.
Place fresh "AA" batteries in the transmitter and turn the power
switch on. Slide the throttle and steering trim adjustments to to
the center position. Now install fresh "AA" batteries into the bat-
tery holder and turn the power switch to the on position. The ser-
vos will automatically jump to their center positions.
Contact Traxxas for assistance: 1-888-TRAXXAS. 972-265-8000 (outside USA). E-Mail us at support@Traxxas.com
gear. Remove the ball bearings
and install them in the new clutch
bell gear. Reinstall the clutch bell
gear and E-clip. Note: Smaller
clutch bell gears use smaller ball
bearings. Refer to your parts list for
the correct bearings.
the spring and 4mm locknut. Slide
a strip of thin note paper between
the spur gear and the clutch bell
gear. Push the clutch bell gear
against the spur gear and tighten
the 3x8mm adjusting plate screws.
Remove the paper and the gear
mesh should be correctly adjusted.
Turn off the battery holder switch followed by the transmitter.
The servos are now ready to be installed. Be careful not to move
the servo shaft when reinstalling the servo horns.
STORAGE
After running your Nitro Rustler, use a good "after-run" product
prior to storage. The chemicals used in the fuel attract moisture
and can cause moisture and corrosion to form inside the engine.
Drain the fuel tank, start the engine and run it until all of the
remaining fuel is completely used up. Remove the air cleaner
and place the recommended number of drops (usually 6 drops)
of the after-run oil into the carburetor. Now, spin the engine for 2-3
seconds with the EZ-Start to circulate the oil. Replace the air
cleaner. Never store your model with unused fuel in it.
INSTALLING A RADIO SYSTEM (Model 4404)
Before installing the radio system center your servos as
described in your radio system's operating instructions. Note: the
plug on the Traxxas 4-cell battery holder is compatible with
Traxxas and Futaba radio systems. Some Airtronics, Sanwa,
and Novak receivers require that the positive and negative
leads in the plug be reversed. Refer to your radio system's
schematic to ensure that the polarity is correct.
The splines inside the steering servo saver and the throttle
servo arm are compatible with Traxxas and Futaba servos. Other
brands of servos may not fit properly and require you to pur-
chase a compatible servo saver and servo arm. The designs are
an industry standard so it should not be difficult to locate identi-
cal parts that will fit your servos.
Install the radio system components and hook up the linkages
as shown in the drawings on the
right. Route your wires neatly to
prevent them from being
damaged.
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