Traxxas 82044-4 Owner's Manual page 27

MOTORS AND GEARING
The TRX-4 Sport's Titan ™ 550 Motor has been carefully matched
to the needs of the TRX-4 Sport. The Titan 550 is made to run
efficiently at high voltage to provide more torque and longer run
times. We do not recommend converting the TRX-4 Sport to a
typical low-voltage setup using traditional 540 size motors. While
these components will physically fit into the TRX-4 Sport, the
system will not run as efficiently, losing power in the form of motor
and battery heating. The result will be shorter run times, high
current draw, and extreme battery and motor temperatures.
The TRX-4 Sport is equipped from the factory with a 39-tooth
spur gear and 17-tooth pinion gear. TRX-4 Sport has a large
range of gearing, making it suitable for many different types of
applications and environments. If you want more acceleration
and less top speed, use a smaller pinion gear (fewer teeth, higher
numerical ratio). The overall reduction is the number of turns
the motor makes for one revolution of the tire. Higher numerical
ratios provide more torque, lower numerical ratios provide more
top speed. With the Titan 550 motor, do not use a pinion gear
larger than 17-tooth with the stock 39-tooth spur gear. Use the
following formula to calculate the overall ratio for combinations
not listed on the gear chart:
# Spur Gear Teeth
x 15.8 = Final Gear Ratio
# Pinion Gear Teeth
Gearing Compatibility Chart:
The chart below show a full range of gear combinations. This
does NOT imply that these gear combinations should be used.
Over-gearing (bigger pinions, smaller spurs) can overheat and
damage the motor and/or speed control.
Stock factory gearing
For 6- or 7-cell NiMH battery and 2s/3s LiPo battery
Does not fit
Not recommended for stock motor
www.modellmarkt24.ch
ADJUSTING YOUR MODEL
Spur Gear
39 45
9
- 79.00
10 - 71.10
11 - 64.64
12
- 59.25
13
- 54.69
14 - 50.79
15 41.08 47.40
16
38.51 44.44
17 36.25 -
18 34.23 -
19 32.43 -
20
30.81 -
21 29.34 -
22 28.01 -
TRX-4 SPORT • 27