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The motor temperature sensor is factory installed and provides
accurate telemetry data and thermal overload protection for
the motor. If you remove the temperature sensor for vehicle
maintenance, be certain to reinstall it correctly. The sensor should
be installed so the thermistor (the small component at the top of
the temperature sensor) is on the top of the motor (the side where
the wires exit the motor). The sensor should also be centered
on the motor. If the sensor is installed incorrectly, inaccurate or
false readings will be sent to the speed control, and your model's
performance may be compromised. Do not operate the X-Maxx
without the temperature sensor. If the sensor is missing or
incorrectly installed, overheating and permanent motor damage
may occur. Damage caused by overheating is not covered by the
limited warranty.
The X-Maxx also features factory installed cooling ns. These
cooling ns help pull the heat away from the motor. Also, the
electronic speed control features a cooling fan to assist in cooling
the VXL-8s in high current motor applications.
Tuning the Sealed Gear Di erentials
The action of the front and rear gear di erentials can be tuned
for di erent driving conditions and performance requirements
without major disassembly or removal of the suspension system.
From the factory, the di erentials are sealed to maintain consistent
long-term performance. Changing the oil in the di erential with
either lower or higher viscosity oil will vary the performance
characteristics of the di erentials. Changing to higher viscosity oil
in the di erential will reduce the tendency for motor power to be
transferred to the wheel with the least traction. You may notice this
when making sharp turns on slick surfaces. The unloaded wheels
on the inside of the turn have the least traction and tend to spin
up to extremely high rpms. Higher viscosity (thicker) oil causes the
di erential to act like a limited-slip di erential, distributing more
equal power to the left and right wheels.
X-Maxx will generally bene t from higher viscosity oil when
climbing or racing on low traction surfaces. Note: Heavier oil will
allow power to be transferred, even with one or more tires o the
ground. This can make the vehicle more likely to overturn on high-
traction surfaces.
From the factory, the front di erential is lled with SAE 10,000W
viscosity silicone oil. The rear di erential is lled with 30,000W oil.
Only use silicone oil in the di erentials. Traxxas o ers
SAE 10,000W, 30,000W, and 50,000W viscosity oil (see
your parts list). The di erentials have to be removed
from the vehicle and disassembled to change/replace
oil. Follow the steps below to access and re ll the front
and rear di erentials:
Front and Rear Di erential Removal:
1. Remove the two 4x20mm button-head cap screws
that secure the bumper to the skid plate. Rotate the
front bumper up and out of the way.
2. Remove the 4x12mm button-head cap screw (1) and
the 4x16mm button-head cap screws (4) that secure
the di erential cover.
Note: To reach the screws at the bottom of the cover,
slide your screwdriver through the slots in the lip of
the skid plate.
3. Remove the di erential cover.
4. Remove the di erential from the housing. The drive
axles will slide out of the di erential cups. To install
the di erential, follow the steps in reverse order.
Re lling the Di erential:
Refer to the X-Maxx Front Assembly in the Service and Support Guide
included with your model, or online at Traxxas.com/support for the
complete di erential assembly.
1. Remove the four 3x15mm cap screws to pull the di erential case
and ring gear apart. Work over a towel to collect any uid that
drips from the di erential.
2. Drain the uid from the di erential. You may wish to remove the
spider gears from the di erential to make this easier.
3. Place the spider gears back into the di erential case (if you
removed them). Fill the di erential case with uid until the
spider gears are submerged half way.
4. Rejoin the ring gear and di erential case, using care to align
the screw holes. Be sure the rubber gasket is in place or the
di erential may leak.
5. Install the four 3x15mm cap screws and tighten securely.
www.modellmarkt24.ch
ADVANCED TUNING ADJUSTMENTS
Front Di erential Removal
1.
4x20mm
BCS
2.
4x12mm BCS (1)
4x16mm BCS (4)
Rear Di erential Removal
1.
4x20mm
BCS
2.
4x12mm BCS (1)
4x16mm BCS (4)
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