Product overview
The YRDRONE LJ4125 KV450 is a propulsion motor for fixed-wing drones. Its 12-slot, 14-pole architecture is paired with a speed constant of 450 RPM/V, with a tolerance of +/-5%. Installation dimensions are 50+/-0.10 mm in diameter and 55+/-0.5 mm in length, and motor weight is 393+/-15 g. Recommended integration uses a 6S LiPo battery, a 6S/100 A ESC and a 15-17 inch propeller. OEM/ODM projects can specify custom KV, appearance and color.
Electrical integration must accommodate a maximum continuous rating of 80 A/1776 W at 22.2 V. The higher maximum rating of 110 A/2442 W at the same voltage is limited to 15 seconds. Temperature at maximum continuous current is 85°C, while the magnet operating limit is 150°C with a recommended maximum of 120°C. Free-load current is capped at 3.0 A at 20 V, and phase-to-phase resistance is 19.1 mΩ, +/-7%, at 25°C. Thrust varies with propeller, voltage and test conditions.
Specifications
| Specification | Value & conditions |
|---|---|
| Model and purpose | YRDRONE LJ4125 KV450 motor for fixed-wing drones |
| Motor diameter | 50+/-0.10 mm |
| Motor length | 55+/-0.5 mm |
| Slots and poles | 12N14P |
| Motor KV | 450+/-5% RPM/V |
| Free-load current | 3.0 A maximumAt 20 V. |
| Phase-to-phase resistance | 19.1+/-7% mΩAt 25°C. |
| Maximum continuous current and power | 80 A / 1776 WAt 22.2 V. |
| Temperature | 85°CAt maximum continuous current. |
| Maximum current and power | 110 A / 2442 WAt 22.2 V; 15 seconds maximum. |
| Weight | 393+/-15 g |
| Recommended LiPo cells | 6S |
| Recommended ESC | 6S / 100 A |
| Recommended propeller | 15-17 inch |
| Magnet operating temperature | 150°C maximum; recommended maximum 120°C |
| Motor torque constant | 271 g.cm/A |
| Motor constant | 0.12 rpm/g.cm |
| Customization options | Custom KV, appearance and colorFor OEM/ODM projects. |
| Thrust dependency | Thrust performance varies with propeller, voltage and test conditionsPropeller, voltage and test conditions. |
