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25A ESC INSTRUCTIONS Programmable low voltage cutoff
Programmable cutoff types (soft cutoff/hard cutoff)
Programmable brake types (disable/soft brake/hard brake)
Timing advance programmable (low/middle/high/auto)
Governor mode (low rpm governor/high rpm governor)
Programmable current limiting (very sensitive/standard/insensitive/ disable)
Programmable startup types (very soft start/soft start/fast start)
Thermal Protection (100 centigrade)
Applies to most inrunner and outrunner brushless motors.
No complex programming, auto detect work mode.
A LED (flashes) indicates the current limiting or temperature protection is activated.
Runs motor in forward or reverse by swapping any two motor wire connections.
Safe power on arming program ensures motor will not accidentally turn on.
Auto shut down when signal is lost or radio interference becomes severe for more than
3 seconds. After radio connection has been reestablished, moving the throttle to the
lowest position can restart the motor.
The ESC is disabled when the voltage is over 15V at power-on.

Program Settings.
FIRST, calibrate your transmitter throttle. See other side.
1. Low Voltage Cut-off NOTE: Low Voltage Cut-off protects the power battery from being over
discharged, and provides the normal operating voltage to the receiver and servos.













2. Current Limiting


NOTE: Default setting is recommended. If you change the setting, damage to the
controller as a result of over current will be not covered by the manufacturers warranty.
Option 1: Very Sensitive
Low over-current threshold. will rapidly shut-down.
Option
2:Standard(default)
Moderate over-current threshold, will shut down after a
slight delay. Recommended for inrunner motors.
Option 3:Insensitive
High over-current threshold, will shut down after a slight
delay. Recommended for outrunner motors. Only experi-
enced modelers should use this programming feature.
Option 4: disabled
Current limiting detection disabled. Only experienced
modelers should use this programming feature.

Warning
When connecting the ESC, ensure that the polarity of battery is correct. Incorrect polarity
may cause permanent damage to the ESC and such damage is not covered by the
WARRANTY.
When you use the ESC, turn on the transmitter BEFORE powering on the receiver.
When you are finished, power off the receiver BEFORE turning off the transmitter.
The limiting current is set to the standard mode in factory. It is suitable for use in most
configurations. Only experienced technicians can adjust this programming.
In Governor Mode, the brake is always disabled and the soft cutoff is always active.
Changing the PWM may cause the motor to heat ahead of time.
Do not use this ESC on or near water. Never allow water, moisture or any foreign object
onto the PC board of the ESC.
Damage to the controller as a result of excessively high current is not covered by the
manufacturers WARRANTY.
Allowing water, lubricants, moisture or other foreign objects inside the ESC will VOID the
WARRANTY. Exposure to CA glue or its fumes can cause damage and malfunction; this
will also VOID the WARRANTY.
Never disconnect the battery pack while the motor is running, This could cause damage
to the speed controller and/or motor.
Never allow the separate heat sinks to touch each other or any exposed conductive
surface. This may cause a short circuit, damage the ESC, and VOID the WARRANTY.
Connectors with low conductivity may cause erratic motor rpm or other unexpected
results
The controller will automatically power off the motor if the battery voltage drops below
the programmed cut-off voltage (factory preset at 6.0V for 6 NiMh cells).Try using a
smaller prop on the motor, or using batteries with a higher C rating. This is especially
important when using Li-poly cells. Discharging below 3.0V per cell can damage them.

Features of the STORM
®
ESC
Microprocessor controlled
Extremely low resistance
25A continuous (33A surge)
Up to 12 cells NiMH/NiCad or 2~3 cells Lithium-polymer
High rate adjustable switching (PWM:8KHz/12KHz/16KHz)
BEC: 2.0 amps linear
Auto lipo cells detection

Thank you for purchasing this STORM
®

brushless motor ESC produced by Hurricane Flight
Systems. please read these instructions carefully before use. Your STORM ESC is the most
powerful of any other brand ESC in its class. Have Fun. Fly Safe!
3. Brake Type

4. Timing Advance


5. Cutoff Type

NOTE: Soft cutoff is always automatically active in Governor Mode.
6. Soft Start

7. Governor Mode


NOTE: The Governor mode acts as an RPM control. Throttle stick position determines the RPM
that the motor runs and the controller will attempt to hold that RPM regardless of load changes. In
Governor Mode, the brake is always disabled and soft cutoff is automatically active.

8. PWM Switching Rate (frequency)

Note: STORM Outrunner motors should be set on Option 3. If you do not know the setting for
the motor you are using, we recommend you leave it on the default.
Option 1:Brake dis-
abled (default)
Brake disabled is used for helicopters and fixed wing aircraft.
Option 2:Soft brake
Soft brake provides 50% of full braking power. General aircraft
use, with fixed or folding prop
Option 3:Hard brake
Hard brake is 70% braking power. Direct drive applications
where more braking power is required. Hard brake should only
be used below 12V.
Option 1: Low advance
timing 0°~ 15 °
Recommended for lower pole count motors. Gives more power
but is slightly less efficient.
Option 2: middle ad-
vance timing 5 °~ 20 °
Recommended for most motors .Gives a good balance of
power and efficiency.
Option 3: High advance
timing 15° ~ 30 °
Recommended for higher pole count motors. STORM Outrun-
ner motors.
Option4:Auto (default)
Recommended for most brushless motors.
Option 1 :Hard cutoff
(default)
When the battery reaches cut-off voltage, the motor will shut-
down immediately
,
. The motor can be restarted by closing the
throttle to the lowest position and then move the throttle as
normal. This should not be done repeatedly as it will over
discharge the battery.
Option 2: Soft cutoff
When the battery voltage reaches cut-off voltage, slowly
reduce
s
motor power to zero, you will notice a decrease in
power and it is time to land, the throttle maintains its full linear.
Option 1: Very soft start
helicopters
Option 2:Soft start
(default)
fixed or folding prop airplanes, helicopters.
Option 3: Fast start
fastest startup. Most airplanes.
Option 1: Auto calibrat-
ing throttle (default)
Recommended for general aircraft
Option 2: Low RPM
Range
Recommended for collective pitch helicopters. Used for low
pole count motors (Hacker, etc.) and low RPMs on higher pole
count motors.
Option 3: High RPM
Range
Recommended for collective pitch helicopters. Used for higher
pole count motors and higher RPMs.
Option 1: 8 KHz (default)
Recommended for most brushless motors
Option 2: 12 KHz
Recommended for low inductance motors
Option 3: 16 KHz
Recommended for very low inductance motors
Hurricane Flight Systems, Land O Lakes,FL USA 813-996-6997 FAX 813-996-7096 www.FlyHurricane.com info@flyhurricane.com
25A ESC INSTRUCTIONS
Option 1:Auto Lipo
Auto Lipo Cells Detecting
Option2:5.0V(default)
6-8 cell NiCad or NiMH packs, or 2 cell Lithium packs
Option 3:6.0V
8 cell NiCad or NiMH packs, or 2 cell Lithium packs
Option 4:7.2V
9 cell NiCad or NiMH packs
Option 5:8.4V
10 cell NiCad or NiMH packs, or 3 cell Lithium packs
Option 6:9.0V
12 cell NiCad/ NiMH packs, or 3 cell Lithium packs
Option 7:12.0V
4 cell Lithium packs Turn on the trans-
mitter; move the
throttle to the
highest position;
power on the ESC
4 beeps
sound from
Move the throttle
down to the
lowest position.
you have cali-
brated the range
indicates you
have entered
programmable
The 1
st

beep:
Low
Cutoff
The 2
nd
beep:
Current
The 3
rd

beep:
Brake
The 4
th

beep:
Timing
The
5
th

beep:
The 6
th

beep:
Start
The 8
th

beep:
PWM
Switching
Rate

The
10
th

beep:
The 7
th

beep:
Gover-
nor

One beep
indicates you
have entered
the Low
Cutoff Volt-
age Setting.
Auto lipo
3
rd
beep: 6V
4
rd
beep:7.2v
5
th
beep:8.4v
6
th
beep:9v
7
th
beep:12v



Three beeps
indicates you
have entered
the Brake
Type Setting.
Brake Dis-
able

Soft Brake
Hard Brake

Four beeps
indicates you
have entered
the Timing
Advance
Setting.
Low Ad-
vance
Middle Ad-
vance

High Ad-
vance
(default)


Five beeps
indicates you
have entered
the Cutoff
Type Setting.
(default)
Soft Cutoff


Six beeps
indicates you
have entered
the Soft Start
Setting.
Start
(default)
Fast Start




Seven beeps
indicates you
have entered
the Governor
Mode Set-
ting.
Auto Cali-
brating
(default)
Range
Range


Eight beeps
indicates you
have entered
the PWM
Switching
Rate Setting.
(default)
12K
16K




Two beeps
indicates you
have entered
the Current
Limiting
setting.
Very sensi-
tive

3
rd
beep:

Wait one second,
there will be two
beeps emitted
from the motor.

* You should calibrate the throttle
before entering any other
programming functions.