40A SimonK Brushless ESC – Electronic Speed Controller for RC Airplanes, Drones & UAVs
The 40A SimonK Brushless ESC is a reliable electronic speed controller designed for brushless motors used in RC airplanes, drones, multirotors, and DIY UAV projects. Featuring SimonK firmware, it provides smooth throttle response, reliable motor control, and efficient power management for a wide range of RC applications.
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40A SimonK Brushless ESC – Electronic Speed Controller for RC Airplanes, Drones & UAVs
✈️ Short Description (for top summary box)
The 40A SimonK Brushless ESC is a reliable electronic speed controller designed for brushless motors used in RC airplanes, drones, multirotors, and DIY UAV projects. Featuring SimonK firmware, it provides smooth throttle response, reliable motor control, and efficient power management for a wide range of RC applications.
⭐ Key Features
- 40A Continuous Current Rating for demanding RC power systems
- SimonK Firmware for responsive brushless motor control
- Designed for Brushless Outrunner Motors
- Smooth and precise throttle response
- Suitable for RC Airplanes, Drones & Multirotors
- Built-in BEC for powering receiver and servos
- Lightweight design helps reduce overall aircraft weight
- Fast motor startup and reliable operation
- Suitable for DIY RC and UAV power systems
🧩 About the 40A SimonK Brushless ESC
The 40A SimonK ESC is designed for RC hobbyists who need dependable speed control for brushless motors. SimonK firmware is widely used in RC applications for its responsive throttle characteristics and efficient motor control.
With a 40A current rating, this ESC is suitable for medium-power RC aircraft, multirotors, drones, and custom UAV builds. The integrated BEC can supply power to the receiver and servos, reducing the need for a separate receiver power supply in compatible setups.
Its compact and lightweight design makes it a practical choice for DIY aircraft builders, drone enthusiasts, and RC hobbyists.
⚙️ Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Brushless Electronic Speed Controller |
| Current Rating | 40A |
| DC | 3.7V-14.8V |
| BEC | 3A / 5V (Switch) |
| Firmware | SimonK |
| Motor Output | 3-Phase Brushless Motor Output |
| Li-Poly | 2-3 |
| Application | RC Airplanes, Drones, Multirotors, UAVs |
| Control Range | [Meters/Kilometers] |
📦 What’s in the Box
1 × 40A SimonK Brushless ESC
1 × Servo Signal Cable
Motor & Battery Power Wires
Heat-shrink protective coveringNote: Battery and motor connectors may vary depending on the product batch and may require soldering to match your setup.
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Frequently Asked Questions (FAQs)
Q1. What is the 40A SimonK Brushless ESC used for?
A. It is used to control the speed of brushless motors in RC airplanes, drones, quadcopters, multirotors, and DIY UAVs
Q2. Which motors are compatible with this ESC?
A. The ESC is designed for brushless motors, including commonly used brushless outrunner motors in RC airplanes and drones.
Q3. Does the 40A SimonK ESC have a BEC?
A. This ESC is generally supplied with a built-in BEC, allowing it to provide power to the RC receiver and servos.
Q4. Can I use this ESC with a LiPo battery?
A. Yes, provided the LiPo cell count and voltage are within the ESC's specifications and the battery can safely supply the required current.
Q5. Does the 40A ESC need additional cooling?
A. Good airflow is recommended, especially when operating near the ESC's maximum current rating. Avoid enclosing the ESC in a location where heat cannot dissipate.
| Weight | 50 g |
|---|
2 reviews for 40A SimonK Brushless ESC – Electronic Speed Controller for RC Airplanes, Drones & UAVs
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40A SimonK Brushless ESC – Electronic Speed Controller for RC Airplanes, Drones & UAVs



Excellent quality and fast delivery. Easy to install and worth the price.
Reliable product with good packaging and timely delivery. Recommended for RC hobbyists.