VSD 3115 900KV FPV UAV Motor

 

The 3115 brushless motor produced by VSD, model 3115 motor 900KV, is an outer rotor motor with excellent performance and stable structure, optimized for FPV drone applications.

 

This motor is built on a φ31mm×15mm iron core structure, with multiple advantages of lightweight, high efficiency and low loss. The 12N/14P electromagnetic structure combined with precision winding technology can provide stable power output and good linear response, suitable for a variety of flight missions.

 

Core technical parameters

Voltage(LiPo)	Power(Max)	Current(Max)	KV	No load current(10V)	Outer shaft diameter	Number of slot poles
6s	1701	72.27	900	＜2.0A	5mm	12N/14P
Interphase Internal resistance	core size	Motor size	temperature class	Silicone wire	Motor weight(including wire)
46mΩ	φ31mm×15mm	φ37.5mm×45.5mm	H	18AWG/250mm	115±3

 

Customize Needs	Yes/no
Wires length	YES
Wires color	YES
KV	YES
Motor size	NO
Stator mounting hole	NO
Rotor color	YES
Stator color	YES
Shell color	YES

 

VSD 3115 motor design

 

The VSD 3115 brushless motor is widely used with mainstream propellers such as GF1050, HQ9x4.5, and HQ10x5, and can meet the combination requirements of different flight characteristics. In actual applications, this motor outperforms many competing products of the same specifications with its power performance and thermal stability, and is recognized by industrial drone manufacturers.

 

We used VSD 3115 motors (900KV) with three typical propellers: GF1050, HQ9x4.5, and HQ10x5. We conducted actual tests under 6S power supply and 80A ESC, and found the performance differences under different blade combinations.

 

1. GF1050: Maximum thrust, suitable for long-duration flight

When the VSD 3115 motor is paired with the GF1050 propeller, it outputs 3727g thrust at full throttle, with a current of 68.9A, a power of 1402.8W, and a speed of 14022rpm. The efficiency of this combination is as high as 6.41 g/W at 30% throttle, which is the most efficient of the three combinations.

 

It is suitable for platforms that require longer endurance and stable thrust, such as aerial photography multi-rotors and electric gliders.

 

2. HQ9x4.5: Lowest current, suitable for medium load and flexible flight

When paired with HQ9x4.5, the 3115 motor generates 2780g thrust at 100% throttle, 50.4A current, 1096.8W power, and 13052rpm speed. At low throttle, the efficiency can reach 5.85 g/W, the overall energy consumption is low, and the operating temperature is also the lowest, only 86°C.

 

Suitable for applications that require control sensitivity, such as FPV racing and training drones.

 

3. HQ10x5: The most complete power release, suitable for high thrust scenarios

HQ10x5 provides a load close to the peak value for the 3115 motor, with a measured thrust of 3503g, a current of up to 72.3A, a power of 1701.3W, and a speed of 12786rpm. This combination can release the maximum performance of the motor, but the temperature rises quickly, with the test temperature reaching 107℃.

 

Suitable for scenarios that require large thrust, such as wind-resistant platforms and light-load transport drones.

 

These three combinations cover a variety of usage scenarios from light load and high efficiency to heavy load and high thrust. Users can flexibly choose according to project requirements. The VSD 3115 motor has a wide range of compatibility and adaptability and is a common core component in multi-rotor power systems.

 

VSD 3115 with three types of Spirulina test data table

NO.	Test electrical adjustment	Propeller	Throttle	Voltage(V)	Current(A)	Thrust(g)	Speed(rpm)	Power(W)	Efficiency(g/W)	Temperature
1	80A ESC	GF1050	30%	23.98	3.1	475	5416	74.1	6.41	91
			40%	23.95	6.1	840	6939	145	5.79
			50%	23.92	11.9	1329	8610	285.6	4.65
			60%	23.86	20.5	1900	10225	488	3.89
			70%	23.80	30.2	2441	11507	719.4	3.39
			80%	23.71	42.7	2984	12628	1012	2.95
			90%	23.65	55.6	3418	13458	1315	2.6
			100%	23.56	68.9	3727	14028	1622.4	2.3
2		HQ9x4.5	30%	23.99	2.3	325	5850	55.6	5.85	86
			40%	23.97	4.2	562	7475	101.6	5.52
			50%	23.95	7.9	894	9256	188.9	4.73
			60%	23.92	12.9	1303	11028	309.7	4.21
			70%	23.87	19.3	1724	12601	460.2	3.75
			80%	23.81	28.5	2242	14292	678.3	3.31
			90%	23.74	38.3	2730	15575	908.1	3.01
			100%	23.67	50.4	3233	16846	1193.1	2.71
3		HQ10x5	30%	23.97	3.4	517	5304	82.2	6.29	107
			40%	23.95	6.8	882	6751	161.8	5.45
			50%	23.92	12.6	1359	8230	300.2	4.53
			60%	23.84	23.7	2006	9811	564.6	3.55
			70%	23.77	34.2	2516	10969	813.8	3.09
			80%	23.68	47.6	2988	11876	1126.6	2.65
			90%	23.63	60.1	3305	12440	1420	2.33
			100%	23.54	72.3	3503	12786	1701.3	2.06

The motor temperature is the temperature at which the Motor runs for 3-10 seconds under 100% throttle (the above data is measured by our testing platform, and for reference only, it cannot be directly compared horizontally with data from non our testing platform)

 

With 900KV configuration, up to 1701W power output and stable electromagnetic structure, VSD's 3115 brushless motor is not only suitable for general FPV platforms, but also shows reliable performance in multiple professional drone scenarios. Its excellent thrust-to-weight ratio, low noise operation and excellent response speed make it a cost-effective choice in the 6S battery platform.

 

1. Medium FPV drone

For medium-sized drones that require good thrust response and flexible control, the 3115 motor 900KV combined with the GF1050 or HQ9x4.5 propeller can achieve rapid takeoff and fine control, and is suitable for high-speed flight missions such as forest crossing and racing cruise.

 

2. Aerial photography and surveying multi-rotor

When paired with HQ10x5 or 10x6 propellers, the motor can output stable and efficient hovering thrust, suitable for aerial survey platforms equipped with cameras, lidar or RTK modules. Low current consumption brings longer flight time, which is conducive to performing large-area image acquisition tasks.

 

3. Electric fixed-wing and VTOL platforms

In gliding aircraft or vertical take-off and landing platforms, the light weight and high efficiency of the 3115 brushless motor are particularly important. Especially in fixed-wing electric propulsion systems, the 10-inch propeller can achieve stable cruising and low-noise flight without adding too much weight.

 

4. Light-load transport drone

If you need to push some small loads for point-to-point transportation, the 3115 motor with a high-pitch propeller (such as Gemfan 10x6) can release stronger pulling force for applications such as light cargo transportation, battery delivery, water sample collection, etc., with sufficient carrying capacity and stability.

 

5. Teaching, research and customized development platform

Universities, research institutes or UAV system integrators often choose 3115 brushless motors as the power system for test or experimental platforms because of their standard structure, flexible installation, large power margin, and can be flexibly matched with a variety of flight control and structural designs.

 

Through adaptability tests in different scenarios, VSD's 3115 UAV motor not only meets expectations in performance, but also performs outstandingly in long-term operating stability and thermal management. It is suitable for various flight platforms with clear requirements for thrust, weight and power consumption.

 

In the 6S powered medium-sized UAV market, 3115 specification motors are widely used. The 3115 motor 900KV launched by VSD is significantly superior to common competing products of the same level in terms of electromagnetic efficiency, temperature control capability, process details, etc., and is particularly suitable for flight missions with higher requirements for thrust, reliability and consistency.

 

Core performance comparison with mainstream 3115 motors

Specifications	VSD 3115-900KV	T-Motor MN3115-900KV	Sunnysky X3115-920KV
Maximum power	1701W	1400W	1300W
Maximum current	72.27A	60A	55A
No-load current (10V)	＜2.0A	2.2A	2.1A
Phase-to-phase resistance	46mΩ	55mΩ	60mΩ
Motor weight	115±3g(含线)	120g	122g
Core size	φ31mm×15mm	φ30×15mm	φ30×15mm

VSD's 3115 brushless motor has advantages in output power, thermal conductivity control and weight control, and is particularly suitable for high-load conditions such as long-term flight or frequent starts and stops.

 

Process details advantages

Coil winding process optimization: high-density multi-strand enameled wire winding is used to reduce heat generation and improve copper loss utilization;

 

Upgraded magnetic steel material: high coercivity N45SH magnetic steel is used, which has more stable high temperature resistance;

 

Precise dynamic balance adjustment: Each motor is dynamically balanced and calibrated at the factory, which ensures smoother operation and lower vibration.

 

The silicone wire configuration is standardized: 250mm long 18AWG high-temperature cable, which is convenient for the whole machine wiring and heat dissipation design.

 

Actual flight test feedback

In multiple customer projects (such as medium-sized surveying and mapping multi-rotor, twin-rotor FPV drone, etc.), the VSD 3115 motor is matched with HQ10x5 propellers and powered by 6S batteries. The stable output current is between 60~65A, maintaining good efficiency performance, controlling the motor temperature rise within a safe range, and working continuously for more than 30 minutes without failure feedback.

 

Product consistency and delivery capability

Unlike some brands that have KV drift and motor shaft accuracy issues due to differences in production batches, VSD implements 100% factory inspection on each batch of 3115 brushless motors to ensure that the KV consistency error is controlled within ±2%, greatly improving the customer's overall machine debugging efficiency and flight control stability.

 

If you are looking for a medium-sized UAV power system with strong stability, high efficiency, sufficient thrust and wide adaptability, the 3115 motor 900KV launched by VSD will be your trustworthy choice.

 

Whether used in FPV racing, aerial photography and mapping, electric fixed-wing, VTOL vertical take-off and landing platforms, or as the core power component of scientific research and teaching, or UAV integration projects, the VSD 3115 brushless motor can provide continuous, efficient, and low-noise performance, and surpass most similar products on the market in terms of durability and consistency.

 

As a professional brushless motor manufacturer, VSD not only provides high-performance 3115 drone motor series products, but also supports KV value customization, line length customization, logo customization and batch test report output based on application requirements, helping various drone R&D and manufacturing companies to shorten the development cycle and improve product competitiveness.

 

Contact us now to get samples, motor selection suggestions or cooperation plans, and let the 3115 brushless motor help you achieve a more stable, professional and powerful flight system!