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Thank  you  for  purchasing  TORO  SC120  Brushless  Sensored  ESC  from  SKYRC 
TECHNOLOGY CO.,LTD. Please read the Instruction Manual thoroughly before you use the 
product.  These  operating  instructions  are  designed  to  ensure  that  you  quickly  become 
familiar with its features and functions and make full use of this product.

FEATURES 

Well-performed throttle and brake control function could control the punch/brake rate by 
point and the point can be set by user. The precision of the punch/brake rate is 1%. And 
the user could also custom the throttle/brake curve.
Punch control is reasonable and precise and it can meet different customers' request for 
line and power.
Users could modify the setting, monitor the ESC and motor status at any time by smart 
phone  via  Bluetooth  Module  (Bluetooth  Module  adaptor  can  be  purchased  separately, 
which is not included in the package).
Red  copper  connector  is  used  internal  of  the  ESC.  It  can  decrease  the  internal 
resistance at high current situation.
The circuit is managed by intelligent thermal management kernel algorithm. The dynamic 
loss  can  be  reduced  effectively  when  the  motor  is  running  at  high  speed  or  the  user 
changes the motor speed frequently so that the motor can be more stable when running.
Heat transfer: The internal resistance can be reduced by laminated copper stack control 
technology and cooling fan design so that the dynamic thermal equilibrium can be got. In 
this case, the aluminum heat sinks can works effectively.
The users could set and store 10 sets of profiles in the ESC. These data could be called 
out  at  any  time  without  any  special  program  setting. All  the  setting  can  be  exported  or 
imported so that the user could compare and analyze.
Safety  features:  low  voltage  protection,  motor  and  ESC  overheat  protection  and  signal 
lost protection.
It  can  be  programmed  by  Program  Box(SK-300046),  PC  via  SKYLINK(SK-600013)  or 
smart phone via Bluetooth Module(SK-600058). 
The firmware can be updated by connecting the ESC with PC or smart phone.

INTRODUCTION

SAFETY NOTE 

It is not a toy and suitable for users older than 14 years old.
Never allow water, moisture, oil or other foreign materials to get inside ESC, motor, or on 
the PC Boards. It may damage the ESC completely.
Never disassemble the ESC and modify the components on the PC Boards.
Suggest using the original wires and connectors which are packed in the box.
Never solder one part for more than 5 seconds as some components will get damaged 
by high temperature.
Never  run  the  ESC  w/o  load  at  full  throttle  and  it  may  damage  the  bearings  and  other 
moving parts.
Please make sure the location where to fix the ESC has good airflow ventilating so that 
the heat could dissipate quickly. 
To avoid short circuit, please keep the ESC connectors far away from other metal parts.
Never connect the battery in polarity in reverse.
Please remove the pinion gear before performing calibration and programming functions 
with  this  system.  Please  keep  your  hands,  hair,  cloth,  clear  from  the  gear  train  and 
wheels of an armed high performance
Before you switch on the ESC, please make sure all the cables are well solder with the 
connectors (It is easy to get loose when running) . What's more, make sure the cables 
not touch the moving parts.
Electronic motor timing will increase the temperatures of ESC and brushless motor. Use 
extreme  caution  when  setting  up  and  testing  your  application  to  avoid  overloading  and 
overheating.
Incorrect Boost and Turbo timing setting may cause permanent damage to the ESC and 
motors. Please choose proper ratio and timing setting according to motor's instruction.
To avoid signal interference, please always turn on the transmitter first THEN turn on the 
speed control. Do the opposite when powering it off.
Never  use  faulty  accessories,  e.g.  motor  which  may  damage  the  ESC. Always  insulate 
exposed wiring with heat shrink tubing or electrical tape to prevent short circuits, which 
can damage ESC too.
Always  disconnect  the  battery  pack  from  the  speed  control  when  not  in  use  to  avoid 
short circuits and possible fire hazard. When the ESC is switched off, there is still small 
current and it may cause over discharge of the battery after some time.
The ESC can support 6-12 cells NiMH or 2-4 cells LiPo battery.

We  will  not  be  responsible  for  any  damage  caused  by  non-compliance  with  above 
instruction.

Note: 

Mount Speed Control in Vehicle

Use double-sided tape to mount the speed control in vehicle (do not use CA glue). Use 
double-sided tape to mount the switch where it will be easy to access. Select a position 
where it will not get damaged or get switched OFF during a crash or roll-over.

You may use the mounting plate(included) to fix the ESC to the chassis.

Soldering

Cut the ESC's BLUE, YELLOW & ORANGE silicone motor power wires to the desired length 
and  strip  about  3.2mm-6.35mm  (1/8”-1/4”)  of  insulation  from  the  end  of  each  wire.  “Pre-
tin”the wire by heating the end and applying solder until it is thoroughly covered.
CAUTION: By very careful not to splash yourself with hot solder.
Place  the  ESC's  BLUE  Phase  ‘A’  motor  wire  onto  motor's  ‘A’  solder  tab  and  solder.  Use 
soldering iron to apply heat to exposed wire; begin adding solder to tip of soldering iron and 
wire. Add just enough solder to form a clean and continuous joint from the plated area of the 
solder tab up onto the wire. Solder the ESC's YELLOW Phase‘B’ motor wire to the motor's ‘B' 
solder tab and Solder the ESC's ORANGE Phase ‘C' motor wire to motor’s ‘C’ solder tab.

PREPARATION 

Plan Speed Control Placement

Choose  a  location  for  the  speed  control  that  is  protected  from  debris.  To  prevent  radio 
interference, place the speed control as far away from the radio receiver as possible and 
keep  the  power  wires  as  short  as  possible.  Select  a  location  that  has  good  airflow 
ventilating.  If  the  ESC  gets  air  flow,  it  will  run  cooler;  and  that  means  it  will  be  more 
efficient.

1) 

2) 

3) 

ESC CALIBRATION 

Calibration is necessary for the first use of the ESC, or whenever used with a new/different 
transmitter.  Individual  transmitter's  signals  for  full  throttle,  full  brake  and  neutral  vary.  You 
must calibrate your ESC so that it will operate more effectively with your transmitter.

How to calibrate the ESC?

ESC switch OFF.
Connect the ESC to the battery and the motor.
Turn on the transmitter.
Press and hold the ESC switch for few seconds, the motor will ring long beep once. After 
that, the red LED will blink the motor will ring like beep-beep-beep… in a row which indicates 
it is time to set the neutral position, full throttle and full brake one by one. You could release 
the ESC switch now.

Keep the throttle trigger in neutral position, press the ESC switch once, the 
green LED will blink once then extinguish and the motor will ring beep once 
which indicates the neutral position has been set.

Hold full throttle and press the ESC switch once, the green LED will blink 
twice then extinguish and the motor will ring twice like beep-beep which 
indicates the full throttle has been set.

Move the throttle trigger to full brake and hold full brake, press the ESC 
switch once, the green LED will blink three times then extinguish and the 
motor will ring three times like beep-beep-beep which indicates the full brake 
has been set.
After the calibration is finished, keep the throttle in neutral position, the red 
LED will stay ON, the ESC and the motor is ready to work.

ESC ON/OFF: When the ESC is OFF, press the switch once, the motor will ring beep once and 
the  red  LED  will  blink,  then  the  ESC  is  ready  to  work.  When  the  ESC  is  on,  press  the  switch 
once, the LED will extinguish and the ESC is OFF.

Explanation of LED Indicator

ESC ON/OFF AND LED INDICATOR 

1. 

2. 

After running at full load, the ESC will be very hot. In this case, please turn off the 
ESC after it cools down. 
When  the  motor  is  running,  the  ESC  can't  be  powered  off  by  pressing  the  switch; 
when  the  motor  stops  working,  the  ESC  can  be  powered  off.  In  an  emergency, 
please disconnect the battery to power off the ESC.

Note 1:

Note 2: 

Support Both Sensor or Sensor-less Brushless Motor

INSTRUCTION  MANUAL

For 1/10 SC or Monster, 1/8 SC or Buggy

Connect the motor sensor harness to ESC. Insert the 6 pin connector on the end of the 
motor's sensor wires into ESC's sensor harness socket.
Connect Throttle lead to ESC and other end to the Receiver (Throttle Channel, Ch2)
Solder the motor and the ESC.
Connect ESC to battery pack.

CONNECTION 

1) 

2) 
3) 
4) 

Bluetooth Module
(Optional part)

4/8

3/8

2/8

1/8

Blue motor
phase wires
(phaseA)

Yellow motor
phase wires
(phaseB)

Orange motor
phase wires
(phaseC)

Motor
Sensor Wire

Battery
Pack

Black power wire
(battery negative)

Red power wire
(battery positive)

Throttle
 lead

Receiver

The throttle trigger is in neutral position

The throttle trigger is in neutral position

The motor is running while the throttle trigger doesn’t
reach to the highest throttle/brake position

The throttle trigger is at the highest throttle/brake position.

Red LED is blinking (zero timing)

Red LED stays on
(Motor turbo timing is on)

Green LED is blinking.

Green LED stays ON

45.4mm

53mm

Power
Switch

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