Big Motors > AirDrive (Drones/Fixed-wing)
The D4250 710KV brushless motor delivers versatile high-performance power for fixed-wing RC aircraft and 3D aerobatic models. Engineered with precision-balanced components and optimized electromagnetic design, it provides exceptional throttle response and torque efficiency across flight envelopes. The motor's robust construction and thermal management ensure reliable operation in demanding maneuvers including hovering, torque rolls, and high-speed passes requiring instant power delivery and sustained performance.
| Parameter | Specification |
| Motor Type | 3-Phase Sensorless BLDC |
| Protection Rating | IP54 (Dust & Splash Protected) |
| Rated Voltage | 4-6S LiPo (18.5V–22.2V) |
| Continuous Power | 1000W @ 22.2V |
| Max Torque | 2.2Nm (Peak) / 1.5Nm (Continuous) |
| Speed Range | 3,500–45,000 RPM (ESC Adjustable) |
| KV Rating | 710-800 RPM/V |
| Phase Resistance | 0.018Ω (Phase-to-Phase) |
| Shaft Diameter | 8.0mm (Hardened Steel) |
| Weight | 210g |
| Mounting | 30×30mm / M4 Threads (4-point) |
| Dimensions | Ø42mm × 50mm (Stator Diameter × Height) |
• 3D Aerobatic Tuned: Instant torque response for hovering and knife-edge maneuvers
• Precision Balancing: Titanium-reinforced rotor with <0.015g·mm imbalance
• High-Speed Capability: 0-35k RPM acceleration in 0.10 seconds
• Dual-Cooling System: Radial vents + axial airflow channels
• Versatile Mounting: X-mount and firewall compatible installations
| Application | Voltage | Propeller | Static Thrust | Pitch Speed |
| 3D Aerobatic (2m) | 22.2V (6S) | 14×7" wood | 3.8kg | 95 km/h |
| Warbird (2.2m) | 18.5V (5S) | 13×8" three-blade | 3.2kg | 110 km/h |
| Sport Plane (1.8m) | 18.5V (4S) | 12×6" electric | 2.5kg | 85 km/h |
| FPV Wing | 22.2V (6S) | 9×6" folding | 1.8kg | 140 km/h |
• 1.5-2.5m wingspan sport and scale models
• Warbird replicas (P-51, Spitfire)
• High-speed pylon racers
• Precision aerobatic competition models
• Hover-capable trainers
• Torque roll specialists
• Heavy-lift FPV wings
• VTOL conversion platforms
• Target drone systems
• Continuous Operation: ≤80°C @ 25°C ambient (15-sec burst to 95°C)
• Thermal Management: Maintains <90°C at 95% load with airflow
• Cooling Requirements: Minimum 5m/s airflow (prop wash sufficient)
• Storage Conditions: -20°C to +70°C, <80% RH

