SIYI E3 Propulsion System

E3 Propulsion System, Precision-Engineered Reliability.

SIYI E3 Propulsion System delivers a recommended per-axis thrust of 0.5-1kg with efficiency reaching 9.5 g/W[1].
Featuring a modular design, E3 has undergone rigorous tuning and deep integration to ensure precise control response and extraordinary stability. The motor is engineered with enameled wire and premium NMB bearings, establishing a robust hardware foundation for long-term reliability.
ESC utilizes FOC algorithms for millisecond-level response.
Dual PWM/CAN bus communication and real-time telemetry ensure operational safety in harsh environments. E3 provides the intelligent, reliable solution to your drone propulison with precision and stability.

The Unified Trinity, Deeply Integrated A fully tuned system

The E3 system unites a 3510 stator motor, a 40A continuous current ESC (6S voltage platform), and standard 15.5-inch propellers.
Driven by FOC vector control, this trinity is deeply integrated and factory-tuned for peak compatibility. Designed specifically for drones with a 600-700 mm wheelbase, it offers a robust, high-efficiency solution for portable industrial drones and aerial cinematography platforms.

Optimized Electromagnetic Design for Precision to Stunning

The E3 propulsion system achieves optimal magnetic-electrical coupling. Through precise slotpole matching and sinusoidal airgap flux density design, torque ripple is minimized, engaging the motor an exceptionally smooth operation.
Equipped with high permeability silicon steel laminations and arcshaped magnets, magnetic leakage and iron losses are dramatically reduced, pushing energy conversion precision to the extreme.
This results in outstanding thrust efficiency of 9.5 g/w[ and millisecondlevel instantaneous response.

Premium Materials, High Quality Meets Excellence Aerospace-Grade Aluminum & Precision CNC Machining

Aerospace-grade aluminum upper housing. Precision CNC-machined stator mount with tight tolerances for long-term durability.

High-Temperature Craftsmanship, Built to Last

200°C High-Temperature Craftsmanship,Built to Last.
0.2mm Silicon Steel Laminations reduces core losses and motor heating, effectively extending service life.

Robust Motor Core for Smooth Power Output

NMB Bearings for Exceptional Durability.
Z4 Acoustic Rating for Ultra-Low Noise Emission

FOC Vector Control, Beyond Precision Micro Torque Ripple

Compared with conventional BLDC square-wave drives, FOC enables near-sinusoidal current waveforms for silky commutation. Dual Closed-Loop Contro and SVPWM enable to reduce torque ripple while system latency is minimized.

Millisecond Response

Ultra-fast execution of flight control commands, enabling real-time attitude correction and enhanced disturbance rejection.

Linear Control-to-Throttle Precision

Precision mapping of control inputs to thrust output, delivering nuanced handling and predictable flight states.

PWM & CAN Dual Control, Double Safety

Dual-redundant throttle inputs support both PWM and digital CAN protocols. Upon primary signal loss during flight, the system switches to alternative communication within milliseconds, ensuring safe operation.

Built-in Black Box, Traceable for Documented Flight Data

The system comprehensively logs all critical parameters-voltage, current, RPM, temperature, and operational status. Equipped with automatic storage and faulttracing capabilities, it supports postflight data playback for rapid issue identification and flight parameter optimization.

Omni-Smart Guard Fly Unbound

E3 ESC performs strict voltage, signal, and hardware self-checks upon power-up, isolating risks before the props even spin.
Real-time monitoring of temperature, current, and stall states maintains system stability.
LED indicators and audio alerts provide clear human-machine interaction, ensuring any anomaly is immediately recogniz ed.

Triple Pre-Flight Self-Check

Sequential self-checks of voltage, throttle signal, and hardware circuitry

Fault Indication

Clear Human-Machine Interface feedback via lights and audio prompts

Real-Time Operational Protection

Continuous monitoring of motor stall, critical component temperatures, and current status

Threshold-Based Protection Mechanism

Voltage and temperature featuredefined thresholds, optimally balancing operational safety and performance.

15.5″ Folding Propeller Dynamic Balance yet Flexibility

Carbon-Plastic Composite, Featherlight Yet Rugged Crafted from carbon-fiber reinforced nylon, each blade weighs only 26 g, simulations to combining stiffness with controlled flexibility for resilient performance.

Aerodynamically Tuned, Precision-Balanced Refined through over 10,000 aerodynamic simulations to maximize lift balance and minimize noise.

Easy Configuration, Intuitive Setup

Swap any two phase wires to reverse motor rotation.
Paired with Expandable Status Indicators of external ESC signal lights, it is flexible to wire based on frame geometry, making flight status clearly visible.

Engineered for Drones with a 600-700mm Wheelbase

E3 Propulsion System delivers high-performance propulsion solutions for drones with 600-700mm wheelbases, engineered for micro flagship industrial drones and aerial imaging drones to perform aerial monitoring of power line maitance, night security, traffic management, bridge management and aerial cinematography, which is designed to meet the precision demands of professional missions and the smoothness requirement for premium aerial filming.

Extreme Durability, Rugged Protection

With an IPX5 rating, the system is effectively water and corrosion-resistant. It remains operational in temperatures ranging from -30°C to 60°C. Validated by 1000 hours of continuous endurance testing and 48 hours of salt spray testing, E3 delivers unwavering power in harsh, corrosive environments.