Product overview
The Yahree JT2820 KV1050 is a long-shaft brushless propulsion motor for fixed-wing UAVs and 3D or F3A aircraft. Its physical architecture combines a 12-slot, 14-pole structure with a precision CNC-machined aluminum housing, triple-bearing support and a shaft retained by a C-Clip lock. The motor measures 35.2 +/-0.10 mm in diameter and 41 +/-0.4 mm in length, with a weight of 139 +/-5 g. These dimensions define the motor envelope for integration into an aircraft intended for a takeoff weight of 1400-1600 g, subject to actual weight.
The KV1050 configuration has a recommended 3S-4S LiPo battery, 2S-6S/80 A ESC and 12×6 propeller. At 11.5 V, its continuous limit is 45 A and 517.5 W, while 70 A and 805 W are limited to 15 seconds. With a 12*6 propeller at full throttle, the performance figures are 2050 g thrust, 43.4 A and 473.06 W at 10.9 V; thrust varies with propeller, voltage and test conditions. Magnet temperature has a 150°C maximum and a recommended 120°C ceiling. Bearing replacement is recommended every 60-80 flight hours regardless of apparent condition.
Specifications
| Specification | Value & conditions |
|---|---|
| Product and application | Yahree JT2820 KV1050 long-shaft brushless motor for 3D, F3A and fixed-wing UAV aircraft. |
| Motor diameter | 35.2 +/-0.10 mm |
| Motor length | 41 +/-0.4 mm |
| Slots and poles | 12N14P |
| Motor KV | 1050 +/-5% RPM/V |
| No-load current | 2.5 A maximumAt 10 V. |
| Phase-to-phase resistance | 25.1 +/-7% mΩAt 25°C. |
| Maximum continuous current and power | 45 A / 517.5 WAt 11.5 V. |
| Temperature | 85°CAt maximum continuous current. |
| Maximum current and power | 70 A / 805 WAt 11.5 V; 15 seconds maximum. |
| Motor weight | 139 +/-5 g |
| Recommended LiPo battery | 3S-4S |
| Recommended ESC | 2S-6S / 80 A |
| Recommended propeller | 12×6 |
| Maximum operating temperature | 150°C; recommended maximum 120°CMagnet temperature. |
| Torque constant | Kt: 108.45 g.cm/A |
| Motor constant | Cn: 1.17 rpm/g.cm |
| Performance at 30% throttle | 11.1 V; thrust 560 g; current 6.3 A; power 69.93 W; efficiency 8.01 g/WJT2820 with 12*6 propeller; 30% throttle. |
| Performance at 40% throttle | 11.1 V; thrust 720 g; current 8.9 A; power 98.79 W; efficiency 7.29 g/WJT2820 with 12*6 propeller; 40% throttle. |
| Performance at 50% throttle | 11 V; thrust 880 g; current 12.2 A; power 134.2 W; efficiency 6.56 g/WJT2820 with 12*6 propeller; 50% throttle. |
| Performance at 60% throttle | 11 V; thrust 1110 g; current 16.9 A; power 185.9 W; efficiency 5.97 g/WJT2820 with 12*6 propeller; 60% throttle. |
| Performance at 70% throttle | 11 V; thrust 1320 g; current 21.9 A; power 240.9 W; efficiency 5.48 g/WJT2820 with 12*6 propeller; 70% throttle. |
| Performance at 80% throttle | 11 V; thrust 1540 g; current 27.2 A; power 299.2 W; efficiency 5.15 g/WJT2820 with 12*6 propeller; 80% throttle. |
| Performance at 90% throttle | 11 V; thrust 1720 g; current 33.9 A; power 372.9 W; efficiency 4.61 g/WJT2820 with 12*6 propeller; 90% throttle. |
| Performance at 100% throttle | 10.9 V; thrust 2050 g; current 43.4 A; power 473.06 W; efficiency 4.33 g/WJT2820 with 12*6 propeller; 100% throttle. |
| Housing construction | Precision CNC-machined aluminum housing with a 12N14P motor structure. |
| Shaft retention and bearing architecture | Anti-stripping design, linear shaft, C-Clip lock and triple-bearing support. |
| Suitable aircraft takeoff weight | 1400-1600 gSubject to actual aircraft weight. |
| Recommended bearing replacement interval | 60-80 flight hoursEvery 60-80 hours of flight time, regardless of apparent bearing condition. |
| Overview speed, thrust and peak power | No-load speed 11,742 RPM; overview maximum thrust 2.0 kg; overview peak power 800 WThrust varies with propeller, voltage and test conditions. |
