The Cobra CM-2820/16 740Kv is a 740 kv motor with a 28 × 20 mm stator, weighing 146 g and rated to 35 A.
| Brand | Cobra |
|---|---|
| Model | Cobra CM-2820/16 740Kv |
| kv | 740 |
| Max A | 35 |
|---|---|
| Phase resistance | 74 mΩ |
| Poles | 14 |
| Maker cells | — |
| Curve pack | 5S |
| Weight | 0.32 lb |
|---|---|
| Stator | 28×20 |
| Stator length | 20 mm |
| Max power | 520 W |
|---|
| Throttle | RPM | Thrust (lb) | Power (W) | Current (A) | Efficiency (%) | g/W |
|---|---|---|---|---|---|---|
| 30 % | 4,664 | 0.26 lb | 14 W | 0.6 | 48.4 | 8.44 |
| 40 % | 6,109 | 0.45 lb | 25 W | 1.1 | 60.3 | 8.25 |
| 50 % | 7,527 | 0.69 lb | 40 W | 1.9 | 68.7 | 7.75 |
| 60 % | 8,912 | 0.97 lb | 62 W | 2.9 | 74.3 | 7.17 |
| 70 % | 10,255 | 1.30 lb | 89 W | 4.2 | 78 | 6.6 |
| 80 % | 11,549 | 1.66 lb | 124 W | 5.9 | 80.4 | 6.08 |
| 90 % | 12,784 | 2.05 lb | 166 W | 7.9 | 81.7 | 5.6 |
| 100 % | 13,499 | 2.30 lb | 195 W | 9.4 | 82.1 | 5.34 |