14
PRECAUTIONS
»
Never touch moving parts.
»
Never disassemble while the
batteries are installed.
»
Always let parts cool before
touching.
GEAR CHART
FINAL DRIVE RATIO
Pinion/
Battery
2S
3S
19T
12.18
12.18
20T
11.57
11.57
21T
11.02
11.02
22T
10.52
10.52
23T
10.06
10.06
24T
9.64
9.64
25T
9.26
9.26
26T
8.9
8.9
27T
8.57
8.57
EXAMPLE
INTERNAL
GEAR RATIO
2.66
SPUR
87
PINION
20
FINAL
DRIVE RATIO
11.571
Marginal
THERMO OK
ADJUSTING THE SLIPPER
Turn the 4mm adjustment nut clock-
wise (to the right) to reduce the slip or
counterclockwise (to the left) to increase
the slip.
GEARING
Your vehicle has been equipped with the
optimal gearing for the stock platform. It
offers an ideal balance between speed,
power and efficiency. Should you decide
to customize your vehicle with optional
batteries or motors, it may be necessary
for you to change the pinion or spur gear.
Installing a pinion gear with less teeth or
a spur gear with more teeth will provide
greater torque but will reduce top speed.
Likewise, a pinion gear with more teeth or
a spur gear with fewer teeth will reduce
torque and increase top speed. Care
should be taken when installing larger
pinion gears as this can “overgear” the
vehicle, resulting in overheating of the
motor and ESC. When testing
different gearing options, pay close
attention to the temperature of the
motor and speed control to ensure you
are operating within the temperature
range of the components. The motor or
ESC should never be so hot that it cannot
be touched. If temperatures are too hot,
a different gearing combination with a
lower pinion gear and/or higher spur gear
is suggested.
CHANGING THE PINION
GEAR/GEAR RATIO
Your vehicle comes with the 24T pinion
gear installed for the included 2S battery.
If you want to use a 3S battery, install the
included 20T pinion gear.
1
Unscrew the gear cover screws and
remove the gear cover.
2
Loosen the motor screws and slide
the motor back.
3
Loosen the set screw and remove the
installed pinion gear.
4
Place the new pinion on the end of
the motor shaft so the set screw is
located over the flat on the shaft.
5
Position it so the teeth line up with the
spur gear and secure the pinion by
tightening the set screw.
6
Reinstall the gear cover.
SETTING THE GEAR MESH
The gear mesh has already been set
at the factory. Setting the gear mesh is
only necessary when changing motors
or gears.
Proper gear mesh (how gear teeth meet)
is important to the performance of the
vehicle. When the gear mesh is too loose,
the spur gear could be damaged by the
pinion gear of the motor. If the mesh is
too tight, speed could be limited and the
motor and ESC will overheat.
1
Unscrew the gear cover screws
and remove the gear cover.
2
Loosen the motor screws.
3
Put a small piece of paper between
the pinion and spur gears.
4
Push the gears together while
tightening the motor screws.
5
Remove the paper. The gears should
move a small amount.
6
Reinstall the gear cover.
DYNAMITE FUZE 540 4-POLE 3300KV SENSORLESS BRUSHLESS MOTOR
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