BL Speed Control, 22-Amp (EFLA7310)
• Up to 22-Amp continuous current with proper air flow
• Dual BEC regulators for use with up to 4** servos when using 3-Cell Li-Po packs
• Voltage cutoff set at 9V for 3 Cell Li-Po packs*
• Automatically sets correct motor timing
• Includes pre-wired EC3 Devise and gold bullet connectors
Specifications:
Length: 46.5mm (1.8 in)
Width: 25.5mm (1 in)
Height: 9mm (.35 in)
Weight: 32 g (1.1 oz)
Cells: 3S Li-Po
Continuous Amps: 22
Servo Ratings with BEC Enabled:
Cells: High Torque
Servos
3 Li-Po 2 3 4**
** When using economy class sub-micro servos, it is best to reduce the number of servos by one due to the higher average and peak current draw
commonly associated with these servos. Using the servos included with the Plug-N-Play airplane will not have an issue. Always be sure to position
the ESC for maximum airflow since cooling can significantly aid in the performance of the BEC.
Before first use, please refer to the above chart for BEC usage and cutoff voltage guidelines. You must follow these guidelines for safe operation. If
you are using economy class servos with higher draw or more than four servos for a quad flap option, you will need to disable the BEC. If you wish
to disable the BEC from the connector, you must first remove the red receiver wire and then insulate it properly to prevent shorting. When the BEC
is disabled, you must use a four or five cell receiver pack to power your receiver and servos.
PLEASE READ THESE INSTRUCTIONS IN THEIR ENTIRETY BEFORE USE
Before you connect your ESC and begin flying, take a moment to look it over. The input power side has a black and red wire along with an E-flite
EC3 Male Device Connector. The motor side has three female gold bullet connectors.
The black and red wires with the EC3 Devise (DEV) Connector will connect to your power battery. The red wire connects to the red wire on your
battery pack, the black wire to the black wire on your battery pack. If the wires are reversed, the ESC may be damaged. YOU MUST ENSURE
THAT YOU CONNECT THE BATTERY POLARITY PROPERLY TO PREVENT DAMAGE TO THE ESC. Reversing polarity will void
your warranty, so always double-check this connection. You will need to solder an E-flite EC3 Female Battery (BATT) Connector (EFLAEC302) to
the battery so it matches this speed control. The throttle lead connects to the throttle channel on your radio receiver.
This controller is set with brake off and has a 9V cutoff designed for 3S Li-Po. You are not able to change this programming from the factory
settings.
WARNING: When checking the startup function of the ESC or making programming changes, please remove the propeller to prevent any
potential injury.
Connecting the ESC to the Motor
The three wires from your motor connect to the three female gold bullet connectors on the ESC. The order of connection to the motor is not
important; you can plug any motor wire into any connector. If, when you test the system, the motor runs backwards you have two options:
1. You can change the motor direction by following changing the programming using your transmitter. Instructions are below in the
Programming section.
2. Physically unplug and switch any two of the motor wire plugs connected to the ESC. It is usually easiest to switch the outside wires.
Starting Your Power System
1. Set the desired position of your throttle stick below the CENTER position on your transmitter and turn on your transmitter.
2. Connect the ESC to the battery. You will here two low/high tones indicating the system is armed. (If you are using the ESC with the BEC
disabled, turn on the transmitter first, apply power to the receiver and servos, and then plug the power battery into the ESC.)
3. When you move the throttle stick upward, the motor will run. If you continue to move the throttle stick upward to FULL throttle (high
position), the motor will run faster. If you lower the throttle stick below the start-up position, the motor will stop running.
NOTE: If the start-up position of the motor is not satisfactory for you, you can reset the position by following the information in the
programming section below.
4. Check servo motion as part of your preflight check. It is very important you make sure linkages are free-moving with no bind
ready to fly, move the throttle stick back to your desired throttle position determined in Step 1. You are now ready to fly.
Changing Programming for the Throttle Setting
1. With the transmitter on, set the throttle stick position to your desired setting.
2. Plug the battery into your ESC.
Standard
Servos
Sub-micro
Servos
ing. When you are
3. Move the throttle stick down to OFF throttle (lowest position). You will then here two low/high tones.
4. Immediately move the throttle stick back to your desired setting. You will then here two low/high tones
Changing Programming for Motor Direction
NOTE: This can also be done by simply unplugging any two wires and switching and re-connecting.
1. Unplug the battery supplied to the ESC.
2. Move the throttle stick up to FULL throttle (highest point).
3. Connect the battery supplied to the ESC again.
4. Move the throttle stick down to OFF throttle (lowest point) position. You will then here one low/high tone.
5. Move the throttle stick up to FULL throttle (highest point). You will hear two low/high tones.
6. Next, move the throttle stick to the position you like. When you hear two low/high tones, then the direction should now be changed.
Over-Current Protection
When the prop is locked or jammed and the motor stops running, the ESC will stop power to the motor immediately, so the motor can be protected
from damage due to over-current.
Low Voltage Warning Function
When the voltage of the battery drops below 9V, the ESC will reduce power (drop rpms) to the motor until the voltage is back above 9V. This will
usually occur several times, but we suggest you land immediately before experiencing a significant loss of power while you have enough reserve
power to land the plane.
Limited Warranty Period
Horizon Hobby, Inc. guarantees this product to be free from defects in both material and workmanship for a period of 1 year from the date of
purchase.
For specific information concerning the Limited Warranty, Limits of Liability, and Safety Precautions – please consult the airplane manual.
BL450 890KV Outrunner Motor (EFLM7210)
Specifications
Kv: 890 (rpm/v)
Io: 1.39A @ 8V (no load current)
Ri: .10 ohms (resistance)
Continuous Current: 14A
Max Burst Current: 20A
Cells: 6-10 Ni-MH/Ni-Cd or 2-3S Li-Po
Recommended Props: 9x6 to 11x3.8 ‘Slow Flyer’ or 10x5 to 12x6 ‘Electric’
Brushless ESC: 20-22 Amp
Diameter: 28mm (1.1 in)
Case Length: 34mm (1.35 in)
Weight: 70g (2.5 oz)
Shaft Diameter: 3.17mm (.125 in)
* Maximum Operating Temperature: 220 degrees Fahrenheit
* Adequate cooling is required for all motor operation at maximum current levels.
* Maximum Burst Current duration is 15 seconds. Adequate time between maximum burst intervals is required for proper cooling and to avoid
overheating the motor.
* Maximum Burst Current rating is for 3D and limited motor run flights. Lack of proper throttle management may result in damage to the motor
since excessive use of burst current may overheat the motor.
Operating Instructions
1. This brushless motor requires the use of a sensorless brushless speed control. Failure to use the correct speed control may result in damage
to the motor and/or speed control.
2. When mounting the motor, be sure the correct length of screws are used so damage to the inside of the motor will not occur. We suggest
you use the mounting hardware included with your motor. The use of long screws will damage the motor.
3. You may connect the three motor wires directly to the controller. The ESC has gold plated brushless bullet connectors (EFLA241)
installed
4. If you add connectors and you no longer wish to use them, never cut the motor wires. Remove them by properly desoldering them.
Shortening the motor wires is considered an improper modification of the motor and may cause the motor to fail.
5. When you connect the motor to the esc, check the rotation direction of the motor. If you find the rotation is reversed, switching any two
motor wires will reverse the direction so the motor rotates properly.
6. Proper cooling of the motor is very important during operation. New technology has brought much higher capacity batteries with higher
discharge rates, which can cause extreme motor temperatures during operation. It is the responsibility of the user to monitor the
temperature and prevent overheating. Overheating of the motor is not covered under any warranty.
7. You can install the propeller on the motor shaft after you have confirmed proper rotation direction.
8. Once the battery is connected to the motor, please use extreme caution. Stay clear of the rotating propeller since spinning propellers are
very dangerous as the motors produce high amounts of torque.
9. Never disassemble the motor. This will void any warranty.
Made in China
© 2006 Horizon Hobby, Inc.
www.horizonhobby.com
www.e-fliterc.com
E-flite® is an exclusive brand of Horizon Hobby, Inc.