VSD 4720 420KV FPV UAV Motor

 

This 4720 brushless motor adopts high-precision manufacturing technology and optimized electromagnetic structure design, and is specially designed for medium and large UAV platforms. Its 420KV configuration achieves balanced thrust output and efficiency performance under the 6S~8S voltage platform, and is suitable for a variety of flight environments.

 

4720 420KV motor parameters

Voltage(LiPo)	Power(Max)	Current(Max)	KV	No load current(10V)	Outer shaft diameter	Number of slot poles
6S ~ 8S	3037	99.7	420	＜2.0A	6mm	12N/14P
Interphase Internal resistance	core size	Motor size	temperature class	Silicone wire	Motor weight(including wire)
25mΩ	φ47mm×20mm	φ54.7mm×69.8mm	H	14AWG/800mm	336±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 4720 motor design

 

Engineering Advantages

The combination of high magnetic density stator and rare earth permanent magnet rotor achieves strong starting torque and high-speed stability;

 

12N14P pole group structure, bringing smooth power output and precise response control;

 

H-class insulation grade winding system supports continuous operation under high load conditions and has higher reliability;

 

14AWG long wire design, easy to install on large wheelbase UAV platform, more flexible wiring;

 

Selected bearing system and dynamic balance adjustment ensure flight stability and life consistency.

 

This 4720 motor 420KV not only excels in performance parameters, but also fully considers practical aspects such as engineering installation, whole machine adaptation and electric regulation compatibility. It is a professional-grade product truly developed for "system integration scenarios".

 

In order to verify the performance of the 4720 motor 420KV under actual flight conditions, we tested it with two sets of mainstream three-blade propellers: HQ15x7x3 (with 80A ESC) and GF13x9x3 (with 100A ESC). The test covers key indicators such as voltage, current, thrust, power, efficiency, temperature rise, etc., simulating the load changes in actual flight.

 

NO.	Test electrical adjustment	Propeller	Throttle	Voltage(V)	Current(A)	Thrust(g)	Speed(rpm)	Power(W)	Efficiency(g/W)	Temperature
1	80A ESC	HQ15x7x3	30%	23.96	3.2	648	2932	77.2	8.4	76
			40%	23.94	6.1	1119	3829	147.1	7.61
			50%	23.91	11.5	1769	4798	273.9	6.46
			60%	23.86	18.9	2531	5705	450.7	5.62
			70%	23.79	28.8	3432	6576	685.2	5.01
			80%	23.69	42.3	4487	7441	1002.7	4.48
			90%	23.61	58	5514	8202	1368.7	4.03
			100%	23.46	79.8	6750	8963	1872.4	3.61
2	100A ESC	GF13x9x3	30%	31.96	4	815	3824	127.7	6.38	92
			40%	31.94	7.9	1426	5022	253.1	5.64
			50%	31.89	14.8	2213	6278	470.7	4.70
			60%	31.84	24.4	3159	7444	776.7	4.07
			70%	31.74	39.7	4313	8703	1261.4	3.42
			80%	31.61	57.6	5469	9770	1820.1	3.00
			90%	31.48	79.0	6580	10711	2488.5	2.64
			100%	30.46	99.7	7232	11284	3037.4	2.38
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)

 

In addition, the 4720 motor can also be used with 17x5.8 or 16x6.5 carbon fiber propellers, further expanding the application range and making it suitable for flight platforms that require larger diameters, stable hovering and strong wind resistance.

 

With a peak power output of up to 3037W and a maximum thrust of over 7.2kg, our 4720 brushless motor 420KV has excellent load capacity, efficiency performance and electrical compatibility, and is suitable for various types of medium and large UAV systems.

 

1. Heavy-load aerial photography drone (6-axis/8-axis platform)

The 4720 motor can provide continuous and stable high thrust output on multi-rotor platforms equipped with HQ15x7x3 or GF13x9x3 three-blade propellers, meeting the flight requirements of high-definition gimbal cameras, laser radars and other equipment. Its high-temperature resistant winding design is suitable for long-term hovering and low-noise operation.

 

2. Industrial drones: inspection, security and agricultural plant protection

With 8S high-voltage power supply and 100A ESC, the 4720 motor can support flight missions in complex environments. Whether it is high-rise facade inspection, substation security patrol, or multi-nozzle plant protection drone, this motor can achieve a good balance between high torque and high response speed.

 

3. Long-flight surveying and mapping and VTOL vertical take-off and landing platform

When using 15-17 inch propellers, the 4720 motor exhibits excellent cruise efficiency, which is particularly suitable for long-flight fixed-wing VTOL vertical take-off platforms. Its cable length is sufficient to support the arm wiring of large-wingspan drones, and the H-level temperature rating ensures continuous stability during high-altitude flight.

 

4. Logistics and drone delivery

For logistics multi-rotor platforms that need to carry 3~5kg of materials, the 4720 motor 420KV is a reliable choice. It still maintains good thermal stability under full load output and can be adapted to power systems with battery capacity above 10000mAh.

 

In the market, 4720 brushless motors are used by many brands in medium and large drones. So what are the actual advantages of VSD's 4720 motor in terms of actual parameters and structural configuration?

 

Core parameter comparison

Comparison items	VSD 4720 motor	Other companies' 4720
KV value	420	320
Maximum power	3037W	1600W
Maximum current	99.7A	48A
Motor size	φ54.7×69.8mm	φ50×65mm (approximately)
Weight (including wire)	336±3g	270g
Wire configuration	14AWG / 800mm	18AWG / 450mm (common)
Temperature level	H grade (180℃)	Undisclosed (default is F grade 155℃)
Recommended propellers	HQ15x7x3 / GF13x9x3	18x6.1 / 18x5.5 (limited to low KV)
Applicable ESC	80A / 100A ESC	General ≤60A ESC

 

Summary of differences and advantages

Higher power: Our 4720 motor has a rated maximum power of 3037W, which is nearly twice that of mainstream products, and is particularly suitable for high-load flight scenarios;

 

Higher KV value, stronger response: 420KV provides faster dynamic response, suitable for crossing or heavy-load take-off platforms;

 

Longer and thicker wire: 14AWG wire + 800mm length is the industry leader, reducing line loss and facilitating wiring;

 

Excellent temperature rise control: With H-class winding, the temperature is controlled within 92℃ even at full load, which is far below the limit;

 

The actual matching propellers are more diverse: supporting 15x7x3, 13x9x3 and even larger diameter carbon fiber propellers (such as 16×6.5), which is more suitable for tuning on various flight platforms.

 

We focus on the development and manufacturing of high-performance brushless motors. The 4720 motor 420KV is a representative model for medium and large drone applications. As a motor manufacturer, we not only provide high-quality products, but also provide customized, one-stop support for global drone companies.

 

Factory strength and technology accumulation

It has dozens of fully automatic winding, assembly and dynamic balancing production lines, with an annual production capacity of millions;

 

All series of motors have passed high temperature test, thrust test, electromagnetic compatibility test, and support third-party testing;

 

The product design team has extensive experience in model aircraft and industrial drone power systems and can optimize designs based on customer needs.

 

Flexible customization capabilities

KV value, shaft length, wire length, interface specifications, logo silk screen, etc. can be customized according to customer needs;

 

Provide overall test reports and recommended solutions for the propeller and ESC to reduce customer debugging costs;

 

Support low MOQ customization and provide flexible support for new projects or small and medium batch customers.

 

One-stop service system

Provide full-process support from sample testing → small batch trial production → formal batch production → after-sales feedback;

 

Can assist customers with propeller blade adaptation, electric controller adjustment, flight control joint adjustment, etc.

 

For OEM customers, we can provide unbranded packaging, product white label, and technical interface support.

 

Choosing us means choosing a reliable, efficient motor partner with engineering background.