OpenMotor
Propulsion
Open-Hardware electric propulsion for Drones, Robotics and Aviation. Optimized architecture for maximum Torque Density.Designed for Mass Production.
Core Technology
Patented innovations driving high torque density and efficiency.
Scalable Power Architecture
Our modular design is fully scalable, covering a massive performance range from 1 kW to 1 MW. Whether for light drones or heavy industrial propulsion, the core technology delivers industry-leading torque density across all sizes.
Tangential magnet Polarization
Patented magnet array with polarization perpendicular to side walls concentrates flux, increasing field strength by 1.5x.
Flexible Winding Topology
Configurable single/double-layer winding with flexible series-parallel connections for wide KV adjustment.
High-Conductivity Ceramic Insulation
Ceramic insulation Al2O3 provides superior thermal conductivity (up to 25 W/m·K) directly from coil to stator.
Grain-Oriented and Non Oriented Steel
We utilize high-permeability Grain-Oriented (GO) or Non-Oriented steel (up to 1.9T saturation). This allows us to optimize the core for either maximum torque or high speed.
Adaptive Cooling Technology
Our modular architecture features high-efficiency cooling with spring-loaded radiator segments that maintain constant pressure on the stator, automatically compensating for thermal expansion gaps. This scalable system supports options ranging from passive air-cooled fins for lightweight drones to forced-air and high-performance liquid cooling for heavy industrial and aerospace propulsion.
Rectangular wire Cross-Section
Rectangular wire cross-section increases slot fill factor to ~80%, reducing resistance and increasing current density and heat dissipation.
Open and Close ( IP65) motor construction
We provide motors in both Open (O) configurations for optimal weight and Closed (C) versions. Our closed designs are fully sealed to IP65 standards, offering robust protection against dust and water for industrial applications.
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Propulsion Matrix
Supports 50–800 V via flexible coil topology. Built for heavy-duty applications.
| Model | Continues power | Rotation speed | Thrust | Battery voltage | Motor Mass | |
|---|---|---|---|---|---|---|
| CIAG_2_28 125_25 | 3.7 kW | 4300 rpm | 21 kg | 18S 75V | 2 kg | |
| CIAG_1_42 125_30 | 4.5 kW | 1900 rpm | 36kg | 18S 75V | 2.2 kg | |
| CIAG_2_28 150_40 | 10 kW | 2000 rpm | 60kg | 96S 403V | 4.9 kg | |
| CIAG_1_42 175_40 | 13 kW | 3100 rpm | 60 kg | 168S 705V | 5.5 kg | |
| CIAG_2_28 200_30 | 13 kW | 1600 rpm | 70 kg | 164S 690V | 7 kg |
* Performance varies by ESC timing and propeller selection.
Open Research Roadmap
We invite everyone who wants to collaborate on our upcoming breakthroughs:
High-Fill Foil Windings (Cu/Al)
Moving beyond traditional wire. We are developing copper and aluminum foil coils to maximize the fill factor, suppress eddy current losses, and integrate end-windings into active torque production. This results in superior thermal dissipation and higher power density.
Ceramic Insulation via Micro-Arc Oxidation (MAO)
We are applying Micro-Arc Oxidation (MAO) to aluminum coils to create a high-performance ceramic insulation layer. This resin-free approach drastically increases heat transfer and allows motors to operate reliably in extreme temperature environments where traditional organic insulation fails.
Single-Layer Stator Design
A new stator geometry optimized for one-layer winding. This architecture provides the maximum possible winding factor, doubles the available cooling surface, and creates the shortest thermal path from the coils to the cooling system.
Services & Collaboration
Flexible engineering solutions for your propulsion needs.
Open Hardware Source
Access our base designs. Download 3d models directly from our GitHub repository.
ACCESS REPOEngineering (NRE)
We adapt KV, Power,shaft interfaces, mounting points, and voltage optimization for your specific requirements.
PROJECT BASISPrototyping
We manufacture, assemble and test a Sample to validate performance specs before you scale.
ON REQUESTIntellectual Property Portfolio
Our portfolio of international patents and applications.
International Applications (PCT)
- PCT/IB2023/057129Filed July 12, 2023
- PCT/IB2025/058444Filed August 21, 2025
- PCT/IB2025/060049Filed October 6, 2025
Granted & Registered
- Slovenia26604Granted July 31, 2025
- ChinaZL 202390000194.8Granted May 2, 2025
- Germany21 2023 000 117Registered October 18, 2024
- France24 07270Granted July 11, 2025
- RussiaRU2016132908, WO2018030917A3, P39356505PCT
Pending Applications
- European Patent OfficeEP 4287460 A1Published December 6, 2023
- SpainESU202490013In examination
- Russia2025132537Filed November 21, 2025
- India202517116950Filed November 25, 2025