D4214 440KV Heavy-Duty Brushless Outrunner Motor for VTOL & Agricultural Crop Duster Drones

D4214 440KV Motor Core Technical Specifications

Electrical Specifications

• Model: D4214 440KV
• KV Rating: 440KV (No-Load RPM Constant)
• Operating Voltage: 4S-8S LiPo Battery (16V-32V)
• Rated Current: 20A | Max Continuous Current: 41A
• Max Continuous Power: 1312W
• Idle Current: 1.45A | Motor Efficiency: 90%
• Internal Resistance: 42mΩ
• Motor Cable Length: 350mm

Mechanical & Environmental Specifications

• Stator Size: Φ42mm (Diameter) × 14mm (Height)
• Motor Outer Dimensions: Φ49mm × 58.7mm
• Spindle Thread: M6 | Propeller Mounting Holes: 6
• Motor Mounting Pattern: 30×30mm, 4-M4
• Net Weight: 195g
• Winding Configuration: 12N14P
• Dynamic Balanced Rotor: Yes | Heavy Duty Design: Yes
• Water & Dust Proof: Customizable
• Recommended ESC: 8S 50A Brushless ESC
• Recommended Propeller: 1308-3 Prop
• Primary Application: VTOL Aircraft, Agricultural Crop Duster Drones

D4214 440KV Official Thrust Test Data

Tested with the recommended 1308-3 propeller, 8S LiPo battery, at a stable 55℃ operating temperature:

Key Features & Benefits of the D4214 440KV Brushless Motor

• Purpose-Built for VTOL & Agricultural Drones: Optimized 440KV winding and 12N14P configuration deliver stable, consistent thrust for VTOL takeoff/landing and continuous crop spraying missions, the industry standard for 10L-20L agricultural UAVs.
• Dynamic Balanced Rotor for Smooth, Low-Vibration Flight: Factory dynamic balancing eliminates vibration, reducing wear on drone components, improving flight stability, and enhancing imaging accuracy for mapping and inspection payloads.
• Heavy-Duty Design for Harsh Operating Environments: Rugged construction with a sealed structure, customizable water and dust proofing, and stable performance at 55℃ operating temperature, built to withstand repeated agricultural spraying and outdoor VTOL operations.
• Proven 90% Operating Efficiency: High-grade windings and precision components deliver 90% peak efficiency, reducing battery drain and extending flight time for longer, more productive missions.
• Standardized Mounting for Plug-and-Play Setup: Industry-standard 30×30mm mounting pattern, M6 spindle thread, and universal 350mm motor cables are fully compatible with mainstream VTOL and agricultural drone frames, no custom modifications required.

Ideal Applications & Compatible Platforms

The D4214 440KV motor is engineered for professional UAV applications, including:

• VTOL (Vertical Takeoff and Landing) aircraft and fixed-wing hybrid drones
• Agricultural crop duster / spray drones (10L-20L payload capacity)
• Multirotor mapping and surveying UAVs
• Medium-lift logistics and delivery drones
• Industrial inspection and surveillance multirotor platforms

Compatibility Guide for D4214 440KV Motor

• Battery Compatibility: Optimized for 4S (16V) to 8S (32V) LiPo batteries, minimum 25C continuous discharge rate
• Recommended ESC: 8S 50A multirotor-specific brushless ESC, for reliable performance and precise throttle control
• Recommended Propeller: 1308-3 propeller (official tested and validated for maximum efficiency and thrust)

Frequently Asked Questions (FAQs)

What is the maximum thrust of the D4214 440KV motor?

When paired with the recommended 1308-3 propeller and 8S LiPo battery, the D4214 440KV delivers a maximum static thrust of 4920g (4.92kg) at 100% throttle, with a stable operating temperature of 55℃.

What battery voltage is compatible with the D4214 440KV motor?

This motor is optimized for 4S to 8S LiPo batteries (16V-32V), with flexible configuration for both VTOL platforms and agricultural spray drone setups.

What ESC should I use with the D4214 440KV motor?

We recommend pairing the D4214 440KV with an 8S 50A brushless ESC, specifically designed for multirotor and VTOL applications, to ensure reliable power delivery and precise throttle response.

Is the D4214 440KV suitable for VTOL and agricultural spray drones?

Yes. This motor is purpose-built for VTOL aircraft and agricultural crop duster drones, with a heavy-duty design, dynamic balanced rotor, and customizable waterproofing to withstand harsh farming and flight environments.

What is the difference between D4214 440KV and D4214 380KV motors?

The D4214 440KV is optimized for 4S-8S LiPo batteries, with a max thrust of 4920g, designed specifically for VTOL and agricultural spray drones. The D4214 380KV is built for 6S-12S LiPo batteries, with higher peak thrust for heavy-lift industrial multirotor applications.