B3115 Brushless Motor 900KV 6S 12N14P FPV Racing Drone
B3115 Brushless Motor 900KV 6S 12N14P FPV Racing Drone
B3115 Brushless Motor 900KV 6S — Built for FPV Racing Performance
Take your FPV racing drone or RC quadcopter to the next level with the B3115 Brushless Motor (900KV, 6S). Featuring a 12N14P pole configuration, a robust 31×15mm stator, and a solid 5mm output shaft, this motor delivers outstanding thrust and efficiency for demanding multirotor applications. Whether you're tearing through race gates or flying freestyle, this motor offers the power-to-weight balance serious pilots demand.
Made in Mainland China.
Key Features
- High Power Output: Up to 1,296W maximum power at full throttle for aggressive, responsive flight
- 12N14P Configuration: 12 stator slots and 14 pole magnets for smooth, efficient power delivery
- 6S LiPo Compatible: Designed to run on 6-cell lithium battery packs for maximum voltage headroom
- 5mm Output Shaft: Standard 5mm diameter axle output, compatible with a wide range of prop adapters
- Compact Stator: Φ31×15mm stator fits mid-to-large frame builds without unnecessary bulk
- Low No-Load Current: Only 1.7A idle draw, helping to maximize overall system efficiency
Full Specifications
| Motor Size | Φ37.2 × 48.3mm |
| Stator Size | Φ31 × 15mm |
| Slot-Pole Configuration | 12N14P |
| Motor KV | 900KV |
| Max Power (100% Throttle) | 1,296W |
| Max Current (100% Throttle) | 54.79A |
| No-Load Current | 1.7A |
| Axial Output Length | 17mm |
| Axial Output Diameter | Φ5mm |
| Supported Battery | 6S LiPo |
| Recommended ESC | 50A |
| Recommended Propeller | 1045 |
Package Includes
- 1× B3115 Brushless Motor (900KV, 6S)
Notes
Due to lighting and screen variations, the item's color may appear slightly different from product images. Please allow 1mm–1cm tolerance due to manual measurement.
For general guidelines on safe operation of RC and electronic components, refer to the U.S. Consumer Product Safety Commission (CPSC) for helpful safety information.
Frequently Asked Questions
Q: What frame size is the B3115 900KV brushless motor best suited for?
A: With a Φ37.2×48.3mm motor body and 31×15mm stator, the B3115 is well-suited for mid-to-large FPV racing drone frames and RC quadcopter builds, typically in the 450–550mm class or larger multirotors that can leverage its high 1,296W maximum power output.
Q: What ESC and propeller are recommended for this motor?
A: A 50A ESC is recommended to safely handle the motor's maximum current draw of 54.79A. For optimal thrust and efficiency on a 6S LiPo setup, a 1045 propeller (10-inch, 4.5-pitch) is the manufacturer's recommended pairing.
Q: Is this motor compatible with 6S LiPo batteries only?
A: The B3115 900KV is specifically rated and optimized for 6S LiPo battery packs. Using a different cell count may affect performance and could exceed safe operating parameters — always match your battery and ESC to the motor's specifications.
Q: What does 900KV mean for this brushless motor?
A: KV refers to the motor's RPM-per-volt rating. A 900KV motor spinning on a 6S LiPo (nominally ~22.2V) will reach approximately 19,980 RPM at no load, making it a strong performer for high-thrust applications in FPV racing drones and RC multirotors.