Fpv motor
BGS-F3115 900KV 1050KV Drone Motor for 10inch FPV Propulsion and High-Speed Drive Systems
The 3115 outer rotor motor is a high-efficiency brushless DC outrunner motor (BLDC), which has the characteristics of compact structure, strong power and high efficiency. The "3115" in the model number usually indicates the stator size: the stator diameter is about 31mm, the stator height is about 15mm.
Technical Specifications
| Recommended 3115 UAV Motor | |
| Type:3115 | Motor Dimension:37.5*45.5 |
| Magnet:Zinc-Plated | Coil Insulation Test:500V Withstand |
| Dynamic Balance StabdardsP:≤5mg | Configuration:12N14P |
| Shaft Diameter:5mm | Lead:18AWG*250mm |
| Screw Diameter:Φ19-M3-4 | Prop Adapter Shaft Thread:M5X14.5mm |
| Recommended Voltage:KV900 | Idle Current (10V):1.4A |
| Rated Voltage (LiPo):6S | Peak Current:64.37A |
| Max Thrust:3.49kg | Weight(Incl. Cable):112g |
Advantages
Basic Data
| MODEL | KV Value | Maximum power | Maximum current | Pull | Efficiency | Propeller | Battery | ESC | |
| BGS-F3115 | KV | W | A | g | g/W | / | S | A | |
| 400 | 1497.60 | 31.20 | 4275 | 2.85 | HQ9*5*3 | 12 | / | ||
| 400 | 1982.40 | 41.30 | 4810 | 2.43 | HQ10*5*3 | 12 | / | ||
| 640 | 1571.20 | 49.10 | 4310 | 2.74 | HQ9*5*3 | 8 | / | ||
| 640 | 1936.00 | 60.50 | 4725 | 2.44 | HQ10*5*3 | 8 | / | ||
| 900 | 1711.20 | 71.30 | 4215 | 2.46 | HQ9*5*3 | 6 | / | ||
| 900 | 1994.40 | 83.10 | 4635 | 2.32 | HQ10*5*3 | 6 | / | ||
| 1050 | 2006.40 | 83.60 | 4545 | 2.27 | HQ9*5*3 | 6 | / | ||
| 1050 | 2011.20 | 83.80 | 4810 | 2.39 | HQ10*4.5*3 | 6 | / | ||
Test Data
| Model | Accelerator | Voltage | Thrust | Torque | Current | Speed | Power | Efficiency | Motor temperature |
| BGS-F3115 KV400 (Prop)HQ9*5*3 | % | V | g | N.m | A | rpm | W | g/W | ℃ |
| 40% | 48.00 | 865 | / | 3.10 | 7135 | 148.80 | 5.81 | 45 | |
| 50% | 48.00 | 1310 | / | 5.30 | 8750 | 254.40 | 5.15 | ||
| 60% | 48.00 | 1790 | / | 8.30 | 10060 | 398.40 | 4.49 | ||
| 70% | 48.00 | 2370 | / | 12.20 | 11510 | 585.60 | 4.05 | ||
| 80% | 48.00 | 2995 | / | 17.40 | 12930 | 835.20 | 3.59 | ||
| 90% | 48.00 | 3630 | / | 23.60 | 14210 | 1132.80 | 3.20 | ||
| 100% | 48.00 | 4275 | / | 31.20 | 15360 | 1497.60 | 2.85 | ||
| BGS-F3115 KV400 (Prop)HQ10*5*3 | 40% | 48.00 | 1033 | / | 3.65 | 6855 | 175.20 | 5.90 | 45 |
| 50% | 48.00 | 1560 | / | 6.35 | 8330 | 304.80 | 5.12 | ||
| 60% | 48.00 | 2100 | / | 10.20 | 9680 | 489.60 | 4.29 | ||
| 70% | 48.00 | 2830 | / | 15.60 | 11020 | 748.80 | 3.78 | ||
| 80% | 48.00 | 3510 | / | 22.70 | 12230 | 1089.60 | 3.22 | ||
| 90% | 48.00 | 4230 | / | 30.50 | 13350 | 1464.00 | 2.89 | ||
| 100% | 48.00 | 4810 | / | 41.30 | 14085 | 1982.40 | 2.43 | ||
| BGS-F3115 KV640 (Prop)HQ9*5*3 | 40% | 32.00 | 895 | / | 5.10 | 7195 | 163.20 | 5.48 | 50 |
| 50% | 32.00 | 1350 | / | 8.80 | 8810 | 281.60 | 4.79 | ||
| 60% | 32.00 | 1820 | / | 13.90 | 10200 | 444.80 | 4.09 | ||
| 70% | 32.00 | 2390 | / | 20.50 | 11600 | 656.00 | 3.64 | ||
| 80% | 32.00 | 3020 | / | 27.80 | 12930 | 889.60 | 3.39 | ||
| 90% | 32.00 | 3640 | / | 37.50 | 14200 | 1200.00 | 3.03 | ||
| 100% | 32.00 | 4310 | / | 49.10 | 15320 | 1571.20 | 2.74 | ||
| BGS-F3115 KV640 (Prop)HQ10*5*3 | 40% | 32.00 | 1055 | / | 5.75 | 6855 | 184.00 | 5.73 | 50 |
| 50% | 32.00 | 1595 | / | 10.40 | 8370 | 332.80 | 4.79 | ||
| 60% | 32.00 | 2115 | / | 16.20 | 9560 | 518.40 | 4.08 | ||
| 70% | 32.00 | 2835 | / | 24.30 | 10980 | 777.60 | 3.65 | ||
| 80% | 32.00 | 3456 | / | 35.10 | 12080 | 1123.20 | 3.08 | ||
| 90% | 32.00 | 4135 | / | 46.20 | 13150 | 1478.40 | 2.80 | ||
| 100% | 32.00 | 4725 | / | 60.50 | 13950 | 1936.00 | 2.44 | ||
| BGS-F3115 KV900 (Prop)HQ9*5*3 | 40% | 24.00 | 955 | / | 7.60 | 7385 | 182.40 | 5.24 | 55 |
| 50% | 24.00 | 1395 | / | 12.80 | 8965 | 307.20 | 4.54 | ||
| 60% | 24.00 | 1895 | / | 20.70 | 10395 | 496.80 | 3.81 | ||
| 70% | 24.00 | 2465 | / | 29.10 | 11785 | 698.40 | 3.53 | ||
| 80% | 24.00 | 3055 | / | 41.10 | 13085 | 986.40 | 3.10 | ||
| 90% | 24.00 | 3615 | / | 55.20 | 14165 | 1324.80 | 2.73 | ||
| 100% | 24.00 | 4215 | / | 71.30 | 15175 | 1711.20 | 2.46 | ||
| BGS-F3115 KV900 (Prop)HQ10*5*3 | 40% | 24.00 | 1120 | / | 9.30 | 7055 | 223.20 | 5.02 | 55 |
| 50% | 24.00 | 1655 | / | 15.30 | 8495 | 367.20 | 4.51 | ||
| 60% | 24.00 | 2195 | / | 23.20 | 9665 | 556.80 | 3.94 | ||
| 70% | 24.00 | 2905 | / | 35.80 | 11075 | 859.20 | 3.38 | ||
| 80% | 24.00 | 3455 | / | 50.80 | 11995 | 1219.20 | 2.83 | ||
| 90% | 24.00 | 4135 | / | 65.20 | 12985 | 1564.80 | 2.64 | ||
| 100% | 24.00 | 4635 | / | 83.10 | 13755 | 1994.40 | 2.32 | ||
| BGS-F3115 KV1050 (Prop)HQ9*5*3 | 40% | 24.00 | 1110 | / | 9.75 | 7985 | 234.00 | 4.74 | 58 |
| 50% | 24.00 | 1630 | / | 17.30 | 9575 | 415.20 | 3.93 | ||
| 60% | 24.00 | 2220 | / | 26.70 | 11125 | 640.80 | 3.46 | ||
| 70% | 24.00 | 2835 | / | 37.40 | 12465 | 897.60 | 3.16 | ||
| 80% | 24.00 | 3455 | / | 51.20 | 13755 | 1228.80 | 2.81 | ||
| 90% | 24.00 | 4035 | / | 68.10 | 14815 | 1634.40 | 2.47 | ||
| 100% | 24.00 | 4545 | / | 83.60 | 16545 | 2006.40 | 2.27 | ||
| BGS-F3115 KV1050 (Prop)HQ10*4.5*3 | 40% | 24.00 | 1075 | / | 8.60 | 8065 | 206.40 | 5.21 | 58 |
| 50% | 24.00 | 1620 | / | 16.60 | 9720 | 398.40 | 4.07 | ||
| 60% | 24.00 | 2250 | / | 25.60 | 11300 | 614.40 | 3.66 | ||
| 70% | 24.00 | 2910 | / | 36.20 | 12725 | 868.80 | 3.35 | ||
| 80% | 24.00 | 3580 | / | 49.90 | 14050 | 1197.60 | 2.99 | ||
| 90% | 24.00 | 4230 | / | 66.50 | 15075 | 1596.00 | 2.65 | ||
| 100% | 24.00 | 4810 | / | 83.80 | 15975 | 2011.20 | 2.39 |
Drawing

Customizable Solutions
Parts
Applications

A powerful representative in flight
The 3115 outrunner UAV motor is a high-performance brushless motor widely used in industrial drones, agricultural UAVs, mapping platforms, and medium-payload multirotor systems. Designed for efficient thrust generation and stable long-duration operation, the 3115 motor balances torque, cooling capability, and flight efficiency within a compact structure.

One of the main structural features of the 3115 motor is its outrunner architecture. In this design, the outer rotor shell rotates around the internal stator, increasing rotational leverage and improving low-RPM torque performance. This enables the motor to efficiently drive large-diameter propellers while maintaining smoother airflow and lower power consumption.
The motor commonly uses high-grade NdFeB permanent magnets, precision copper windings, and CNC-machined aluminum housing for improved electromagnetic efficiency and heat dissipation. Many 3115 motors also integrate high-quality bearings and dynamic balancing technology to reduce vibration during flight.
Typical operating voltages range from 6S to 12S LiPo systems, depending on KV configuration and application requirements. Low-KV versions are especially suitable for agricultural drones and endurance UAVs because they provide stable thrust and improved efficiency with larger propellers.
Key advantages of the 3115 outrunner UAV motor include:
High torque output | Excellent cooling performance | Stable low-speed efficiency
Large propeller compatibility | Low vibration operation | Long flight endurance support
Due to its balanced power-to-weight ratio and reliable industrial performance, the 3115 outrunner motor has become a popular propulsion solution for modern professional UAV platforms.
In another mapping application, a UAV manufacturer required smoother low-speed control for LiDAR data collection. The 3115 motor’s balanced torque delivery and low-vibration characteristics helped improve flight precision during terrain scanning missions, especially during extended hovering operations.
Today, the 3115 outrunner motor is widely used in:
Agricultural drones | Industrial multirotor UAVs | Mapping and surveying platforms | Inspection drone | Medium-payload heavy lift UAVs
Its combination of efficiency, reliability, and stable torque output makes it an ideal propulsion solution for modern professional drone systems.
The 3115 Story: The Motor That Didn't Quit

Marco almost quit FPV that day.
His drone dropped out of a power loop — not because he flew badly, but because his motor gave up first. Thermal sag. Lost magnetism. The quad fell like a brick into a eucalyptus forest. Three hours of searching. One broken arm. Zero fun.
"Maybe it's time to hang up the goggles."
A friend handed him a 3115. "Just try it."
First throttle punch, Marco froze. No lag. No jumpiness. Just instant response — like the motor knew what he wanted before he moved the stick.
5.1kg of thrust on 6S. His 10" rig came alive.
It was 36°C in Brazil. He flew six packs back-to-back. Old motor? Fried egg hot. The 3115? Warm. That's it. 220°C copper winding + airflow design killed thermal sag.
Marco tried to break it. Full-throttle dives. Concrete gates. Tree branches. Bent props. Scratched bell. The 3115? Still smooth. <5mg balancing meant zero jello in his GoPro. Industrial bearings survived 20+ crashes — no weird noises.
"I stopped thinking about the motor. That's when I knew — this one is different."
Marco isn't a pro. No sponsors. But he flies every weekend. And when friends ask "What motor is that?", he says the same thing:
"3115. Just get it. You'll stop worrying and start flying."
3115 Quick Specs:
▪ 5.1kg thrust (900KV / 6S)
▪ <5mg dynamic balancing
▪ 220°C high-temp winding
▪ Industrial-grade bearings








