It is the king of torque and power density in the 41mm platform. It is no longer designed for “high performance”, but for “extreme performance” and “extreme tasks”. This motor is specifically created to drive the largest, heaviest, and most demanding industrial-grade multi-rotor drones, representing the pinnacle of products. Its core advantages lie in:
Offer torque and power density approaching physical limits. Provide a reliable power foundation for the most cutting-edge and daring drone application concepts. By adopting the engineering philosophy of high pressure and low flow, it integrates ultimate performance with controllable reliability.
| Specification | |
| Weight: | 170.0g (including the cables) |
| Motor Size: | 47 x 32.5mm |
| Shaft Diameter: | 4.0mm |
| Motor Mount: | 19*25mm(M3*4) |
| Configuration: | 24N22P |
| Motor Cable: | 18#AWG 220mm |
| ST4114 330KV Motor | ST4114 400KV Motor |
| Max thrust:3080g | Max thrust:2510g |
| Volts:22.2V(6S) | Volts:22.2V(6S) |
| Suggested ESC: 30A~40A | Suggested ESC: 30A~40A |
| Maximum Power:563.9W | Maximum Power:464.0W |
| Suggested Prop: CF1555TM, CF1855TM | Suggested Prop: CF1555TM, CF1650 |

| Item No. | Prop | Throttle | Voltages | Load Current | Power | Thrust | Efficiency | Temperature |
| (inch) | (%) | (V) | (A) | (W) | (g) | (g/W) | (in full throttle load 1min) | |
| ST4114 330KV | CF1555TM | 50% | 22.2 | 2.8 | 62.2 | 680 | 10.94 | 42℃ |
| 65% | 22.2 | 5.2 | 115.4 | 1080 | 9.36 | |||
| 75% | 22.2 | 7.2 | 159.8 | 1360 | 8.51 | |||
| 85% | 22.2 | 10.1 | 224.2 | 1710 | 7.63 | |||
| 100% | 22.2 | 13.4 | 297.5 | 2070 | 6.96 | |||
| ST4114 330KV | CF1650 | 50% | 22.2 | 3.1 | 68.8 | 690 | 10.03 | 44℃ |
| 65% | 22.2 | 5.8 | 128.8 | 1100 | 8.54 | |||
| 75% | 22.2 | 8.5 | 188.7 | 1390 | 7.37 | |||
| 85% | 22.2 | 11.5 | 255.3 | 1730 | 6.78 | |||
| 100% | 22.2 | 15.9 | 353 | 2140 | 6.06 | |||
| ST4114 330KV | CF1855TM | 50% | 22.2 | 5.1 | 113.2 | 1050 | 9.27 | 53℃ |
| 65% | 22.2 | 10.4 | 230.9 | 1680 | 7.28 | |||
| 75% | 22.2 | 14 | 310.8 | 2080 | 6.69 | |||
| 85% | 22.2 | 19.1 | 424 | 2530 | 5.97 | |||
| 100% | 22.2 | 25.4 | 563.9 | 3080 | 5.46 | |||
| Item No. | Prop | Throttle | Voltages | Load Current | Power | Thrust | Efficiency | Temperature |
| (inch) | (%) | (V) | (A) | (W) | (g) | (g/W) | (in full throttle load 1min) | |
| ST4114 400KV | CF1650 | 50% | 18.5 | 3 | 55.5 | 500 | 9.01 | 42℃ |
| 65% | 18.5 | 5.7 | 105.5 | 860 | 8.16 | |||
| 75% | 18.5 | 8.1 | 149.9 | 1110 | 7.41 | |||
| 85% | 18.5 | 11.2 | 207.2 | 1460 | 7.05 | |||
| 100% | 18.5 | 15.6 | 288.6 | 1830 | 6.34 | |||
| ST4114 400KV | CF1555TM | 50% | 22.2 | 3.6 | 79.9 | 780 | 9.76 | 44℃ |
| 65% | 22.2 | 6.7 | 148.7 | 1200 | 8.07 | |||
| 75% | 22.2 | 9.4 | 208.7 | 1540 | 7.38 | |||
| 85% | 22.2 | 13.1 | 290.8 | 1950 | 6.71 | |||
| 100% | 22.2 | 17.7 | 392.9 | 2410 | 6.13 | |||
| ST4114 400KV | CF1650 | 50% | 22.2 | 4 | 88.8 | 710 | 8 | 45℃ |
| 65% | 22.2 | 7.6 | 168.7 | 1260 | 7.47 | |||
| 75% | 22.2 | 11 | 244.2 | 1630 | 6.67 | |||
| 85% | 22.2 | 15.1 | 335.2 | 2010 | 6 | |||
| 100% | 22.2 | 20.9 | 464 | 2510 | 5.41 | |||
| Notes: The test condition oftemperature is motor surface temperature in 100% throttle while the motor run 15 s.environment temperature 26℃ | ||||||||










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