10
EN
GEAR RATIOS
FIRMA 40A BRUSHED ESC
Battery
ESC
Red
Black
Motor
To Receiver
Throttle Channel
SETUP
Throttle calibration should not be needed out of the box. However,
in order to make the throttle range of different transmitters, the
calibration of the ESC is necessary:
• Mount the ESC in an area that is well ventilated and isolated from
vibration and shock.
• Connect the ESC motor wires to the motor red-to-red and black-to-
black.
• Plug the receiver into the throttle channel of the receiver.
• Before plugging the battery into the ESC, make sure your transmitter
is on and the throttle trim is set to zero.
• Connect the battery to the ESC. The vehicle will be powered on
when the battery is connected.
CAUTION:
Keep all body parts and loose clothing away from
any moving parts while the battery is connected to the ESC.
CAUTION:
Always connect the ESC only to a proper power
source that has the correct voltage and polarity. Incorrect voltages
or reversed polarity will damage the ESC. Damage to the ESC caused by
improper voltage or polarity is not covered under warranty.
• Test forward and reverse control using the transmitter.
TO CALIBRATE THE ESC:
• Power the transmitter on and set the throttle control to neutral.
• Connect the battery to the ESC and wait 3 seconds to let the ESC
initiate a self-test and automatic throttle calibration.
• The ESC is ready to run when a long beep sound is emitted from the motor.
• Always disconnect the battery when the vehicle is not in use.
IMPORTANT:
The LiPo cut-off is set to “ON” and the drag brake is
set to 100% from the factory.
Mode
Battery
(BATT)
Forward/Brake/
Reverse (F/B/R)
50% Drag
Brake
100% Drag Brake
(default)
Li-Po
(default)
Ni-MH
SPECIFICATIONS
Type
Brushed
Constant/Peak
40A/180A
Resistance
0.002 Ohms
Function
Forward/Brake/Reverse, Forward/Brake,
Forward/Reverse (Crawler Mode)
Vehicle Type
1/10 on-road and off-road; 1/10 rock crawler
Operation
Proportional forward, proportional reverse
with braking delay, Crawler Mode
Battery Type/Input
Voltage
2–3 cell Li-Po/Li-Fe; 5–9 cell Ni-MH/Ni-Cd
Motor Type
2S Li-Po down to 12T; 3S Li-Po down to 18T
BEC Output
6V/3A
Dimensions
46.5mm x 34mm x 28.5mm (1.8 x 1.3 x 1.1 in)
Weight
70g (2.5 oz)
Battery Connector
IC3
™
connector
SOUND INDICATOR
OPERATION
SOUND
Ni-MH/Ni-CD Battery
1 Short Beep
2S Li-Po Battery
2 Short Beeps
3S Li-Po Battery
3 Short Beeps
ESC Ready
1 Long Beep
SCX10 II SPUR/PINION GEAR RATIO CHART - LCX TRANSMISSION
Pinion
12
13
14
15
16
17
18
56 Tooth Spur
45.5
42
39
36.4
34.13
32.12
30.33
60 Tooth Spur
48.75
45
41.79
39
36.56
Not Available
