Product overview
The YAHREE 4218 is a brushless propulsion motor for long-range and heavy-payload FPV applications. Its large-stator architecture uses a 12N14P slot/pole arrangement within a 49+/-0.15 mm motor diameter. Integration dimensions and mass depend on the selected winding: the 330 KV version measures 41+/-0.5 mm long and weighs 275+/-8 g, while the 430 KV version measures 41+/-0.3 mm and weighs 293+/-8 g. The motor range offers 330, 430, 460, 490, 520 and 560 KV choices, with custom KV, appearance and color options for OEM/ODM projects.
Electrical integration requires matching the winding to the battery, ESC and propeller. The 330, 430 and 460 KV versions recommend 8-10S LiPo batteries, a 6-10S/120A ESC and a 1410-3 propeller; these are component recommendations, with no bundled equipment specified. Continuous ratings have distinct voltage conditions, and maximum current/power ratings apply for only 10 seconds. Magnet temperature is limited to 150°C, with 120°C the recommended maximum. Thrust varies with propeller, voltage and test conditions, so the motor has no single configuration-independent thrust rating.
Specifications
| Specification | Value & conditions |
|---|---|
| Motor diameter | 49+/-0.15 mm330 KV version. |
| Motor length | 41+/-0.5 mm330 KV version. |
| Slots/poles | 12N14P330 KV version. |
| Motor KV | 330+/-5% RPM/V330 KV version. |
| Free-load current | 1.9 A Max330 KV version; at 20 V. |
| Phase-to-phase resistance | 62+/-7% mΩ330 KV version; at 25°C. |
| Maximum continuous current/power | 45 A / 1800 W330 KV version; at 40 V. |
| Temperature at maximum continuous current | 98°C330 KV version; at maximum continuous current. |
| Maximum current/power | 75 A / 3000 W (10s Max)330 KV version; at 40 V; 10 seconds maximum. |
| Motor weight | 275+/-8 g330 KV version. |
| Recommended LiPo cells | 8-10S330 KV version. |
| Recommended ESC | 6-10S/120A330 KV version. |
| Recommended propeller | 1410-3330 KV version. |
| Maximum magnet operating temperature | 150°C (Recommended Max 120°C)330 KV version; recommended maximum 120°C. |
| Motor torque constant | Kt: 223.44 g*cm/A330 KV version. |
| Motor constant | Cn: 0.32 rpm/g*cm330 KV version. |
| Motor length | 41+/-0.3 mm430 KV version. |
| Motor KV | 430+/-5% RPM/V430 KV version. |
| Free-load current | 2.5 A Max430 KV version; at 20 V. |
| Phase-to-phase resistance | 43+/-7% mΩ430 KV version; at 25°C. |
| Maximum continuous current/power | 55 A / 1831 W430 KV version; at 33.3 V. |
| Maximum current/power | 93 A / 3097 W (10s Max)430 KV version; at 33.3 V; 10 seconds maximum. |
| Motor weight | 293+/-8 g430 KV version. |
| Motor torque constant | Kt: 274.6 g*cm/A430 KV version. |
| Motor constant | Cn: 0.31 rpm/g*cm430 KV version. |
| Motor KV | 460+/-5% RPM/V460 KV version. |
| Free-load current | 2.7 A Max460 KV version; at 20 V. |
| Phase-to-phase resistance | 40+/-7% mΩ460 KV version; at 25°C. |
| Maximum continuous current/power | 58 A / 1716 W460 KV version; at 29.6 V. |
| Temperature at maximum continuous current | 95°C460 KV version; at maximum continuous current. |
