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To enjoy trouble-free operation from your electronic speed control 
(ESC), follow these simple steps. You'll maximize performance and 
minimize any chance of problems caused by incorrect installation. This 
ESC's specifications are listed below. If you plan to use it for any 
application other than those listed in these instructions, first consult 
your hobby dealer or call our service department. PLEASE FOLLOW 
ALL INSTRUCTIONS CAREFULLY!

FEATURES

• Two motor/two battery operation for rock crawling.
• The ESC-15K is designed to be used with 380-size motors.
• Motor, battery, and radio connectors are pre-installed.
•  High frequency operation provides very smooth control, maximizes 

battery run time, and reduces operating temperatures.

•  LED indicators are red and green. Red is for forward throttle and 

green is for reverse.

 INTRODUCTION

®

ESC–15K

ROCK CRAWLING

ELECTRONIC SPEED CONTROL W/REVERSE

OPERATING INSTRUCTIONS

Functions: 

Auto set-up, with forward and reverse

Features: 

High temperature and low voltage cutoff protection

Input Voltage:

 Dual 7.2-8.4V (6-7 cells)

Motor Limit: 

Dual 380

Current: 

20A max, 60A surge

On Resistance

: Forward .005ohm, Reverse .005 ohm

Operating Frequency:

 0-900Hz auto

BEC:

 DC 5V/1A

Case Size: 

1.75 x 1.25 x 1.18 in (44.5mm x 31.7 mm x 30mm)

SPECIFICATIONS

• 

 Do not

 use lithium polymer batteries with the ESC-15K unless a low 

voltage cut-off unit is used.

•  

Do not run the kit near water! Never allow water, moisture, or any 
foreign material inside the case of the ESC.

•  Never use more than 7 cells (8.4 volts total) in each battery pack.
•  

Do not attempt to connect the battery packs to the ESC in reverse, 
as permanent damage to the ESC could result.

•  

Do not mix instructions. If you are building a vehicle that has a 
mechanical speed control, do not use the wiring diagram included 
with the vehicle.

•  

Never cut or splice the ESC input wires. Do not connect a battery to 
the receiver’s (Rx) “battery” slot. The Rx receives power through the 
ESC itself, which plugs into the Rx’s throttle channel slot.

•  

Always disconnect the battery packs from the ESC when not in use.

•  

Never turn on the ESC before plugging it into the Rx and switching 
on the transmitter (Tx).

IMPORTANT PRECAUTIONS

To Receiver

(CH 2)

Red Plugs

to Batteries

Yellow Plug

to Motor

Yellow Plug

to Motor

1.  Plug the ESC three wire connector into the receiver’s channel 2. The 

orange wire is signal, the red positive and the black negative. Refer 
to the receiver's instruction manual for correct polarity identification.

2. Connect the ESC’s yellow plugs to the front and rear motors.
3.  Connect the ESC’s red plugs to the two 7.2-8.4V batteries being used.

ESC INSTALLATION

Adjusting your transmitter (Tx) is critical for proper speed control 
operation. The Tx throttle adjustments are described below:

•  ATV, EPA, or ATL: Set all to maximum or 100%.
•  Throttle Trims and Sub Trims: Set all at neutral or zero.

TRANSMITTER ADJUSTMENTS

The following information can help the ESC perform at maximum 
efficiency and minimize the chance of overheating and radio 
interference problems.

1.  Locate the ESC in a position to allow for good airflow, with as little 

obstruction from the model’s outer body or exterior dirt and debris 
as possible. Maintaining a clean ESC and achieving good airflow 
across the unit is very important for keeping the ESC cool and 
maximizing performance. 

2. Mount the ESC using double-sided mounting tape. 
3.  Mount the ON/OFF switch in a convenient place. Ensure that it is 

securely mounted using mounting tape in a location where it cannot 
be easily turned off by rocks or obstacles.

4.  The Receiver (Rx) and its antenna should be mounted as far away 

from the ESC as possible. Also, try to keep the Rx away from the 
motor, battery, power wires, servos, or any large piece of metal – 
such as a metal chassis. 

MOUNTING THE SPEED CONTROL

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