





- Stock: In Stock
- Model: C157.HW40A
40A Brushless ESC 2-3S Brushless Motor Controller SimonK
The 40A Brushless Motor ESC is engineered for use with sensorless brushless motors across a wide range of RC applications, including airplanes, boats, and cars. This Electronic Speed Controller provides stable and dependable power, ensuring smooth operation and precise throttle response.
Key Features
- Over-temperature Protection: Automatically reduces power output when overheating is detected, preventing damage.
- Low Voltage Cutoff: Protects LiPo batteries by cutting off power when voltage drops below safe limits.
- Throttle Range Calibration: Enables the ESC to match your transmitter for smooth and accurate throttle control.
- Motor Timing Adjustment: Fine-tune motor timing to optimize performance for different motor setups and applications.
- Programmable Functions: Customize features like brake settings, battery type, and throttle response using a programming card (if supported).
Applications
- RC Planes: Delivers consistent throttle control for small to medium brushless motors in fixed-wing aircraft.
- RC Boats: Ensures efficient power delivery and reliable performance on water.
- RC Cars: Ideal for applications requiring responsive throttle and high durability.
Technical Specifications
- Continuous Current: 40A
- Burst Current: 50A (up to 10 seconds)
- Input Voltage: 2–3S LiPo (7.4V to 11.1V)
- BEC Output: 5V / 2A (Linear BEC)
- Motor Compatibility: Sensorless brushless motors
- PWM Frequency: 8kHz
- Microcontroller: High-performance 8-bit MCU for accurate and responsive control
Physical Attributes
- Dimensions: Approx. 55mm x 27mm x 8mm
- Weight: Approx. 36g
Is this ESC compatible with 3S LiPo batteries?
Yes, it supports both 2S and 3S LiPo batteries within the voltage range of 7.4V to 11.1V.
Can I use this ESC with a sensor-based motor?
No, this ESC is designed specifically for sensorless brushless motors.
What happens if the ESC overheats?
The over-temperature protection system automatically reduces power output to prevent damage.
How do I calibrate the throttle range?
To calibrate, power on the ESC with the transmitter throttle stick at maximum. Wait for confirmation beeps, then move the throttle to minimum and wait for the arming tones.
Is a programming card required to change settings?
A programming card (if supported) simplifies configuration, but settings may also be changed through throttle stick commands depending on the ESC firmware.