Fpv Brushless Motors R3115 900KV 3-6S 10Inch and 11Inch RC Long Range Quadcopter
$22.99
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- Description: KV: KV900
- Operating rated voltage (Lipo): 3-6S
- Specifications: R3115 900KV
- Stator Thickness:
- No. of Stator Arms:12
Description
R3115 900KV Fpv Brushless Motors – High-Efficiency Power for 10-11 inch UAVs & Traversal Aircraft
Fpv Brushless Motors Product Overview
The R3115 900KV Fpv Brushless Motors is a precision-engineered power solution designed for 10-11 inch unmanned aerial vehicles (UAVs) and traversal aircraft. With a robust 12N14P pole-slot configuration and high-quality materials, this motor delivers reliable thrust and efficiency for medium-sized drones. Whether you’re building a custom UAV, a surveillance platform, or a specialized traversing aircraft, the R3115 provides the perfect balance of power and weight.
Fpv Brushless Motors Key Features
- Optimized for 10-11 Inch Propellers – Designed specifically for medium-sized UAVs and traversal aircraft.
- Wide Voltage Compatibility – Supports 3-6S LiPo batteries, offering flexible power options.
- Efficient Power Delivery – Low internal resistance (60mΩ) ensures high efficiency and cool operation.
- Robust Construction – Precision-balanced rotor and durable materials for vibration-free flight.
- Standard 12N14P Configuration – Proven motor architecture for smooth and reliable performance.
- Lightweight Design – Weighs only 112g, ideal for weight-sensitive applications.
Fpv Brushless Motors Technical Specifications
| Parameter | Value |
|---|---|
| Model | R3115 900KV |
| KV Rating | 900 RPM/V |
| Stator Diameter | 31 mm |
| Stator Thickness | 15 mm |
| No. of Stator Arms | 12 |
| No. of Rotor Poles | 14 |
| Motor Configuration | 12N14P |
| No-Load Current | 2.5A Max (@ 25.2V / 6S) |
| Motor Resistance | 60mΩ (Reference) |
| Weight | 112g ± 2g |
| Outside Diameter | 37.5mm ± 0.2 mm |
| Body Length | 33.6mm ± 0.5 mm |
| Input Voltage | 3-6S LiPo |
| Recommended Propeller | 10″ – 11″ |
| Compatible Models | 10-11 inch UAVs, traversal aircraft, custom drone builds |
Recommended Applications
- Drone Type: Medium-sized UAVs, traversal aircraft, surveillance drones, custom FPV platforms
- Propeller Size: 10–11 inches (optimized for efficiency and thrust)
- ESC Requirement: 30A–40A (based on load and battery voltage)
- Battery: 4S–6S for optimal performance

Motor Package Includes
- 1 × R3115 900KV Brushless Motor
- 1 × Hardware kit (mounting screws, bullet connectors if applicable)
This R3115 900KV Fpv Brushless Motors is an excellent choice for UAV developers and hobbyists seeking a reliable, efficient, and lightweight power plant for their 10-11 inch aircraft platforms.
R3115-900KV – High‑Torque 10–11″ Fpv Brushless Motors for Efficient Long‑Range Flight
Designed specifically for 10–11″ unmanned aerial vehicles (UAVs) and traversal aircraft, the R3115-900KV combines a large 31mm stator with a 900KV winding to deliver exceptional thrust efficiency on 3‑6S LiPo. Whether you’re building a long‑range cruiser, a survey drone, or a heavy‑lift traversal platform, this motor provides the torque and reliability you need.
Key advantages:
- Optimized for 10–11″ propellers – The 31×15mm stator generates high torque at moderate RPM, perfectly matched to large‑diameter props for maximum flight time and smooth cruising.
- 900KV sweet spot – Ideal for 4‑6S operation. Lower KV than typical 7″ motors but higher than 640KV variants – giving you responsive throttle while maintaining efficiency for long‑range traversal.
- Efficient 12N14P magnetic design – Smooth cogging, linear throttle response, and reduced vibration for cleaner video footage.
- Low no‑load current (2.5A @ 25.2V) – Indicates high magnetic efficiency, meaning less energy wasted as heat – critical for endurance flights with Li‑ion packs.
- Reasonable internal resistance (60mΩ) – Balances copper loss with torque output, allowing sustained climbs without overheating.
- Robust mechanical construction
– 112g weight – Solid yet competitive for the class, providing thermal mass for heat dissipation.
– 37.5mm outer diameter & 33.6mm length – Fits most large frames designed for 10–11″ props.
– Standard M5 prop shaft & 19×19mm mounting – Compatible with common 10‑11″ props and full‑size frames. - Wide voltage range (3‑6S) – Flexible power options: 4S for moderate flying, 6S for peak efficiency or extra thrust when needed.
Recommended applications:
- 10‑11″ long‑range FPV quads (Mark4, Apex XL, LR frames)
- Traversal / surveying UAVs requiring stable, efficient flight
- Heavy‑lift cinema drones (with appropriate ESC and battery)
- Endurance platforms using Li‑ion 6S packs (e.g., 21700 cells)
Recommended ESC: 50‑60A (e.g., BLHeli_S 50A/60A or BLS 60A)
If you need higher torque for 11″+ props or extreme efficiency, consider the 640KV version. For most 10‑11″ traversal builds, the R3115-900KV delivers the perfect balance of responsiveness and stamina.
Additional information
| Weight | 0.12 kg |
|---|---|
| Dimensions | 5 × 5 × 5 cm |
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