INTRODUCTION
FEATURES
JC 1081
Congratulations on selecting the ACE RC BLC series brush-
less motor electric speed control. The BLC-40 is designed for
mini-size electric aircraft/helicopter, while the BLC-65 and
BLC-75 are designed for the mid-size electric
aircraft/helicopter. These brushless motor speed controls
can satisfy all your flying needs. They are capable of supply-
ing up to 40Amps (BLC-40), 65Amps (BLC-65), and 75Amps
(BLC-75) of continuous motor current. They are small and
lightweight, but includes a large heat sink surface area. They
are the most suitable ESC for the Thunder Tiger OBL series
brushless motors. For safety considerations, there are built-
in safety features to prevent accidental motor startup when
powering on. Before using this speed control, please read
the manual carefully so that setup can be done properly.
Low battery voltage protection.
Overheat protection.
Motor timing adjustment.
Brake control.
Throttle response adjustment.
Airplane and helicopter modes.
Governor mode for helicopter.
Soft start.
Anti-interference ring.
SPECIFICATIONS
Product Name
Item No.
Resistance
Continuous Load (5 min)
BEC Voltage
BEC Current
Reverse
Brake
Governor Mode
Over Load Protection
Setup Procedure
Weight
Dimensions
BLC-40
8041-A/8041-H
7.4~14.8 V
(2S-4S Li-Po)
0.0048
Ω
40A
5V
2A
No
Yes
Yes
Temp. Protection
Digital
27g
52x24x7.9
BLC-65
8042-A/8042-H
7.4~37 V
(2S-10S Li-Po)
0.0044
Ω
65A
Non
Non
No
Yes
Yes
Temp. Protection
Digital
46g
60x34.5x11.5
BLC-75
8043-A/8043-H
7.4~22.2 V
(2S-6S Li-Po)
0.003
Ω
75A
Non
Non
No
Yes
Yes
Temp. Protection
Digital
45.6g
50x34.5x11.5
ACE RC BLC-40/BLC-65/BLC-75
Brushless Motor Electric
Speed Control
Product no. #8041 / 8042 / 8043
CONTENT
Note:
1)Ensure that all solder connections are of good quality.
2)Connect the ESC to the motor matching the
corresponding wire colors. If the motor rotation is the
opposite of what is desired, then simply reverse any two
of the wires.
3)Make sure that the battery polarity is connected
properly.
Manufactured by
THUNDER TIGER CORP.
FUNCTIONS
There are 5 basic functions included in the BLC controller
that have more options can be selected by special setting
procedure. The following are the explanation for these
functions.
BATTERY PROTECTION
It was a built in Battery Management System function of the
speed control. The power cut off timing was based on the
cell number and continues output current of the battery.
There were 4 options defined in the battery management
system in the BLC series controllers. 3 options were for Li-
Polymer batteries and 1 option for using with NiCd/NiMH
batteries. The battery management system allows you to
protect your batteries from over discharge and moreover to
extend the lifetime of your batteries. The 4 options are listed
as below:
. Light discharge protection for Li-Po/Li-Ion
. Standard discharge protection for Li-Po/Li-Ion
. Heavy discharge protection for Li-Po/Li-On
. +5V cut-off protection for Ni-Mh/Ni-CD
MOTOR TIMING
There were 3 options in this function that allows you to
maximize the performance of your motor output. You could
chose from low/mid/high to fit with different brushless
motors. Higher timing offers more power output at the
expense of efficiency. Please check the current draw after
changing the timing option in order to prevent overloading
of battery. The 3 options are listed as below:
. Auto timing
. Soft timing
. Standard timing
. Hard tim ing
Brake Mode
There were 3 options in brake function that allows you to
choose from no brake, soft brake, and hard brake option.
The 3 options are listed as below:
. No brake
. Soft brake
. Hard brake
Throttle Sensitivity
The throttle sensitivity function offers you different throttle
response time for different set up in different occasions. It
could be an ideal function with different flying style. The
faster throttle response time will offer you quick and
sensitive throttle feedback. The 3 options are listed as
below:
. Soft throttle response
. Standard throttle response
. Quick throttle response
Flying Mode
The flying mode offers you different options for different
aircrafts. You could chose from airplane, helicopter, and
helicopter with governor. The 3 options are listed as below:
. Airplane mode
. Helicopter mode with governor (see Note)
. Helicopter mode without governor (see Note)
Note:
1)For the battery protection function, technically the power
cut off timing was based on the cell number and continues
output current of the battery. The microprocessor will
calculate the timing and to cut the power with two steps.
Because the late stage of each battery discharge cycle has
quick voltage change, such function will provide a safe
process during the operation
1st step:
enabled when the single cell reaches the low
point, the motor will be forced to lower the
RPM by microprocessor
2nd step:
enabled when the single cell reaches the
lowest point defined in the system, the
Option Mode
Auto timing
Soft timing
Standard timing
Hard timing
No brake
Soft brake
Hard brake
Soft throttle response
Standard throttle response
Quick throttle response
Airplane mode
+5V cut-off protection for
Ni-Mh/Ni-CD
Heavy discharge protection
for Li-Po/Li-On
Standard discharge
protection for Li-Po/Li-Ion
Light discharge protec-
tion for Li-Po/Li-Ion
Helicopter mode
without governor
Helicopter mode
without governor
Flying
Mode
Throttle
Sensitivity
Brake
Mode
Motor
Timing
Battery
Protection
Function
Correlation combina-
tions of sounds
SERVICE
Thank you for purchasing the BLC series brushless motor
ESC. Thunder Tiger strives to bring you the highest level of
quality and service we can provide. We race and test our
products around the world to bring you state-of-the-art
items. Thunder Tiger guarantees that you should enjoy
many hours of trouble free use from our R/C products.
Thunder Tiger products have been sold worldwide through
the authorized distributors that are supported directly and
rapidly from Thunder Tiger. You may find that Thunder Tiger
is always pursuing to explore new items creatively with
highest quality. To update the latest product information and
to get the best technical support, please feel free to contact
your local hobby shops or Thunder Tiger authorized distribu-
tor.
START PROCEDURE
1.Turn on your transmitter and make sure that the throttle
stick is at the idle position.
2.Turn on the receiver if no BEC.
3.Connect the battery to the ESC.
4.If the ESC is connected correctly and receives signals
from the receiver, you will hear 3 rising tones ( ),
which means the ESC is ready to go.
5.Go flying and have fun, but be mindful of your flying
time.
CAUTION!!
High power motor systems could be very dangerous. High
current could generate heat on wires, batteries, and
motors. Always follow the instruction and use proper tools
to set up the system within safe range. Always fly at a
designed field with caution even though this controller is
equipped with safety arming program.
Speed Control x 1
Gold Connectors x 2 sets
(for battery connecting)
Anti-interference ring x1
Instruction Manual x 1
Application
Item No
Function
Mode
Airplane
8041-A
8042-A
8043-A
Helicopter
8041-H
8042-H
8043-H
FACTORY DEFAULT SETTING
Due to the normal flying mode setting on the speed control
is different from airplane and helicopter. So for each BLC
series, there are 2 type can be chosen to match your flying
requirement. Both of these 2 type have the same specifica-
tion and full function. Just the factory default setting mode
are different. The following table is the factory default
setting mode for these 2 types of airplane and helicopter
function.
BLC-40
BLC-65
BLC-75
Helicopter mode
without governor
Standard throttle
response
No brake
Auto timing
Standard discharge
protection for
Li-Po/Li-Ion
Airplane mode
+5V cut-off
protection for
Ni-Mh/Ni-CD
Auto timing
No brake
Quick throttle
response
Battery
Protection
Motor
Timing
Brake Mode
Throttle
Sensitivity
Flying Mode
CONNECTIONS
It is strongly recommended to use 3.5mm or 4.0mm gold
connectors, which should be soldered firmly to the cables.
Please refer to the diagram below on how to connect the ESC
with battery and motor.
Black(-)
Red(+)
Receiver
Black
(-)
to Motor
Not included
Gold Connector
(+)
Red
Yellow
Battery
OPTIONAL PARTS
AQ0835
Anti-interference ring(3)
AQ0836
Gold Connectors(3.5mm)
AQ0837
Gold Connectors(4mm)
1
st
step voltage
3.2V
2.9V
2.6V
2
nd
step voltage
2.9V
2.6V
2.3V
Protection Function Mode
Light discharge protection
for Li-Po/Li-Ion
Standard discharge protec-
tion for Li-Po/Li-Ion
Heavy discharge protection
for Li-Po/Li-On
+5V cut-off protection for
Ni-Mh/Ni-CD
No battery voltage
protection defined
2)Helicopter modes are equipped with a soft start function.
However, the ESC will not activate the soft start function in
the first 5 seconds after the throttle is shut down. This
way, if the user shuts down the throttle by mistake during
flight, it will allow the motor restart immediately and avoid
a crash.
SETTING PROCEDURE
The following processes will explain the throttle calibration
and the setting of ESC.
1.As a safety precaution, we recommend disengaging the
pinion gear from the main gear during this procedure.
2.Also review the FUNCTION MODE CHART and select which
modes you wish to use since the setting procedure immedi
ately follows the calibration procedure.
3.Turn on the transmitter and put the throttle stick at full
throttle position.
4.Turn on the receiver if no BEC.
5.Connect the battery and the ESC.
6.You will hear 6 tones ( ) from the ESC, which
means the full throttle position has been calibrated.
7.Move the throttle stick to the idle position (lowest
position). You will hear 4 tones ( ), which
means the idle throttle position has been calibrated and
now the ESC will enter the setting mode.
8.While in the setting mode you will hear combinations of
sounds, which represent various functions. Each sound
consists of a long tone and a short tone. The long tone
represents which function is being set, and the short tone
represents the option mode for that particular function.
You can check the FUNCTION MODE CHART to get the
correlation for the difference function mode and the
combination sounds.
9.Shortly after the idle position has been calibrated you will
start to hear these setting tones. If you wish to select the
setting of the mode then move the throttle stick to full
throttle position and wait for the confirmation sound
( )means this mode you select has already been
set. After that, move the stick to the idle position and
waiting for the next function mode setting. If you do not
wish to select this setting, leave the throttle stick in the
idle position and wait for the subsequent setting mode.
10.The setting sequence for these 5 main functions will be
–(1) Battery Protection (2) Motor Timing (3) Brake Mode
(4) Throttle Sensitivity (5) Flying Mode.
11.After setting is complete, please turn the power off by
disconnecting the battery from the ESC. If you only change
certain functions, the others will remain the factory
setting.
motor will be completely cut off. To regain
the power, the user needs to adjust the
throttle stick to the “stop” position until the
battery voltage comes back to the safe
level.
The following were the detailed definition of
each option mode in battery protection
function.
FUNCTION MODE CHART
http://www.thundertiger.com
Voltage range
