GEPRC EM3115 900KV Motor Review and Specifications for Long-Range FPV Drones
Overview of the GEPRC EM3115 900KV Motor
The GEPRC EM3115 900KV brushless motor is engineered specifically for heavy-lift, long-range FPV drones requiring sustained power, exceptional efficiency, and minimal vibration. Designed for 9-inch to 12-inch propeller compatibility, the EM3115 has become a top-tier choice among endurance drone pilots, cinematographers, and mapping professionals.
Built with ultra-durable materials, a precisely wound stator, and a high-strength titanium alloy shaft, this motor offers stability at high RPMs and maintains consistent thrust throughout extended flights. Its 900KV rating is optimal for 6S–8S LiPo or Li-Ion battery systems, making it perfect for long-range and cinematic builds.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Model | GEPRC EM3115-900KV |
| KV Rating | 900KV |
| Configuration | 12N14P |
| Motor Dimensions | Φ37.8mm x 26.5mm |
| Shaft Diameter | 5mm (Titanium Hollow Shaft) |
| Max Current | 40A |
| Max Power (8S) | 1360W |
| Recommended Propellers | 9″-12″ |
| Mounting Pattern | 19x19mm / 25x25mm M3 |
| Weight | 92g (including wires) |
| Wire Length | 250mm / 18AWG silicone wire |
| Bearings | Japanese NMB Bearings |
Specifications
- Model: EM3115 900KV Motor
- Max Watt: 1620W
- Peak current: 65A
- Interphase resistance: 46mΩ
- Propeller: 8-10inch Propeller
- Magnet: N52H
- Bearing type: NSK/NMB
- Configuration: 12N14P
- Dimension: φ37.5mmx30mm
- Shaft Diameter: φ5mm
- Shaft Protruding Length: 16mm
- Mounting holes: 19mmx19mm
- Lead: 310mm/18AWG
- ESC: 60A-80A
- Input Volts: 25.2V（6S LiPo)
- Winding: Single strand copper winding
- Weight: 115g(included wire)
- Suitable for :8-10 inch long range FPV
Includes
1 x EM3115 motor
4 x M3*11 round head screws
1 x M5 anti-slip nut
Use Cases and Application Scenarios
1. Long-Range FPV Missions
Thanks to its optimal torque and efficiency curve, the EM3115 900KV is ideal for long-range FPV drones with high-capacity Li-Ion packs (6S–8S, 4000–6000mAh). It delivers sustained power while conserving energy for flights exceeding 20–30 minutes depending on payload.
2. Heavy-Lift Cinematic Platforms
Compatible with 10–12-inch props, it’s well-suited for carrying gimbals, GoPro, or lightweight mirrorless cameras. The motor’s vibration control and smooth throttle response ensure buttery footage.
3. Mapping and Surveying
With its low vibration output and high reliability, the EM3115 is a reliable choice for GIS and photogrammetry drones flying structured routes with minimal throttle fluctuation.
Build Recommendations
To unlock the full potential of the GEPRC EM3115-900KV motor, pair it with the following components:
| Component | Recommended Spec |
|---|---|
| ESC | 60A+ 3–8S BLHeli_32 or BLHeli-S |
| Flight Controller | F7 or H7 with damping plates |
| Frame | 10–12 inch Carbon Fiber Frame |
| Propellers | 10×4.7 / 11×5.5 / 12×4.5 Bi-blade Props |
| Battery | 6S–8S Li-Ion 4000–8000mAh |
| VTX | 1W+ Analog or HD system (DJI/O3/AU) |
| GPS Module | M10 with compass |
Advantages Over Competing Motors
-
Superior Torque-to-Weight Ratio: Better than traditional 2812 and 3110 class motors in the same KV range.
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High-quality Bearings: Japanese NMB bearings deliver ultra-smooth operation and prolonged life.
-
Precision Balance: Factory-balanced to minimize vibration and reduce wear on ESC and frame.
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Thermal Efficiency: The stator design allows excellent heat dissipation during extended climbs.
Discover the Best Selection of FPV Frames – Shop Now
An FPV drone frame is the backbone of your drone’s build, providing stability and structure for the rest of the components. At the FPV Project, we offer a wide range of FPV drone frames for sale that cater to both beginners and seasoned pilots, providing a foundation for building high-performance racing and freestyle drones. With our selection of FPV frames, you can customize and build your drone to your exact specifications and take your flying skills to the next level.
Learn More About Carbon Fiber!
https://en.wikipedia.org/wiki/Carbon_fiber_reinforced_polymer
- Carbon fiber is a popular material choice for FPV drone frames due to its strength, durability, and lightweight properties.
- Carbon fiber frames provide a higher strength-to-weight ratio than traditional materials, resulting in better performance and maneuverability.
- Carbon fiber composites are resistant to impacts and vibrations, which helps to protect the drone’s sensitive electronics and maintain stability during flight.
- The use of carbon fiber materials in FPV drones also enables faster acceleration, higher speeds, and longer flight times, resulting in a better overall experience for the pilot.
- Carbon fiber is also an excellent thermal conductor, helping to dissipate heat generated by high-powered motors and batteries, thus preventing damage to the drone’s components.
- FPV drone enthusiasts should consider carbon fiber frames when purchasing a new drone or upgrading their existing one to achieve optimal performance and durability.
- Carbon fiber frames are available in a range of sizes and configurations, suitable for different types of drones, including racing, freestyle, and long-range drones.
- When purchasing a carbon fiber frame, consider factors such as weight, stiffness, and compatibility with other components to ensure the best performance for your FPV drone.
- Carbon fiber frames may be more expensive than other frame materials, but their long-lasting durability and performance benefits make them a worthwhile investment for serious FPV drone pilots.
- The FPV Project offers a wide range of carbon fiber frames, suitable for all types of FPV drones, ensuring that enthusiasts have access to the latest technology and the best possible flying experience.
