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Adjusting the Slipper Clutch
The model is equipped
with an adjustable
slipper clutch that 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. From the factory, the slipper clutch adjusting spring
is fully compressed for best drag racing results. Remove the
rubber slipper clutch plug on the transmission cover to adjust the
slipper (if needed). Use the 4-way wrench to turn the adjusting nut
clockwise to tighten and counterclockwise to loosen.
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 into 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 off TSM (see page 17).
5. Turn the transmitter's steering trim knob to the center "0" position.
6. Disconnect motor wires "A" and "C" (see page 12) 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 18). The
servo's output shaft will automatically jump to its center position.
7. 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.
8. 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.
Tuning the Pro Series Magnum 272R™ Transmission
Sealed Differential
The differential is sealed to maintain consistent long-term
performance. Changing the oil in the differential with either lower
or higher viscosity oil will vary the performance characteristics
of the differential. From the factory, the differential is filled with
500K differential oil. Only use silicone oil in the differential.
The differential has to be removed from the transmission and
disassembled to change/replace the oil.
Please refer to the exploded views included with your model for
detailed assembly.
Refilling the differential:
1. Remove the four 2.5x10mm cap screws from the bottom of the
transmission to remove the differential cover.
2. Slide the differential out of the transmission case.
3. Remove the 2.5x10mm button-head cap screws from the
differential and carefully pull the differential halves apart. Work
over a towel to collect any fluid that drips from the differential.
4. Drain the fluid from the differential. You may wish to remove the
spider gears from the differential to make this easier.
5. Place the spider gears back into the differential carrier (if you
removed them). Fill the carrier with fluid until the cross pins
are covered.
6. Rejoin the differential halves, using care to align the screw holes.
Be sure the rubber gasket is in place or the differential
may leak.
7. Install the 2.5x10mm button-head cap screws and tighten
securely.
8. To reinstall the differential, reverse the steps.
ADJUSTING YOUR MODEL
Velineon 3500 Specs
Type:
Sensorless brushless
RPM/volt:
3500
Magnet type:
Ultra High-Temperature
Sintered Neodymium
Connection type :
3.5mm bullet
Wire size:
12 Gauge
Max rpm:
50,000
Diameter:
36mm (1.42) (540 size)
Length:
55mm (2.165)
Weight:
262g (9.24oz)
Always use the proper length
motor bolts. The standard
motor mounting bolts are
3x10mm. Using motor
bolts that are too long can
interfere with the motor's
rotation and damage the
motor's internals!
The VXL-3s features Locked
Rotor Protection. The VXL-3s
checks to make sure the
motor is turning. If the motor
is locked or damaged, the
ESC will enter fail-safe until
the motor is free to rotate.
DRAG SLASH • 27
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