Caelus 2812 motor is optimized for large propellers (7 inches and above), low KV values, and long-endurance flight, primarily used in long-range cruise, aerial photography, light aircraft, and vertical takeoff and landing (VTOL) fixed-wing aircraft. The 28mm stator diameter generates significant torque, but this is designed for smoothly and efficiently propelling large, low-speed propellers, rather than subjecting 5-inch propellers to excessive torque.
| Specification | |
| Weight： | 76g (including the cables) |
| Structural form： | 12N14P |
| Stator dimensions： | φ28*12mm |
| Motor size ： | φ33.6*27.9 mm |
| Shaft diameter： | 5.0 mm |
| Motor Cable: | 18awg*250mm |
| FA2812 KV920 | FA2812 KV1160 |
| Max thrust: 2.93kg | Max thrust:3.15kg |
| Recommended for lithium battery: 6S | Recommended for lithium battery: 6S |
| Recommended propeller: 7-9 inches | Recommended propeller: 7-8 inches |
| ESC recommended：40-60A | ESC recommended：60A |
| Item No. | Voltage (V) |
Prop | Throttle | Thrust (g） |
Current(A） | RPM | Power (W） |
Efficiency (g/W） |
| FA2812 KV920 | 24.5 | HQ9050-3 | 40% | 795 | 6.3 | 7355 | 154.35 | 5.15 |
| 24.5 | 50% | 1195 | 10.6 | 8785 | 259.7 | 4.6 | ||
| 24.5 | 60% | 1570 | 17.4 | 9930 | 426.3 | 3.68 | ||
| 24.5 | 70% | 1980 | 24.5 | 11200 | 600.25 | 3.3 | ||
| 24.5 | 80% | 2405 | 32.9 | 12120 | 806.05 | 2.98 | ||
| 24.5 | 90% | 2720 | 41.8 | 12870 | 1024.1 | 2.66 | ||
| 24.5 | 100% | 2930 | 50.6 | 13350 | 1239.7 | 2.36 | ||
| Item No. | Voltage (V) |
Prop | Throttle | Thrust (g） |
Current(A） | RPM | Power (W） |
Efficiency (g/W） |
| FA2812 KV920 | 24.5 | HQ8040-3 | 40% | 600 | 5 | 9400 | 122.5 | 4.9 |
| 24.5 | 50% | 695 | 6.8 | 10550 | 166.6 | 4.17 | ||
| 24.5 | 60% | 1010 | 9.2 | 11720 | 225.4 | 4.48 | ||
| 24.5 | 70% | 1325 | 13.2 | 13410 | 323.4 | 4.1 | ||
| 24.5 | 80% | 1510 | 18.4 | 14950 | 450.8 | 3.35 | ||
| 24.5 | 90% | 2080 | 25.1 | 16410 | 614.95 | 3.38 | ||
| 24.5 | 100% | 2465 | 32.3 | 17700 | 791.35 | 3.11 | ||
| Item No. | Voltage (V) |
Prop | Throttle | Thrust (g） |
Current(A） | RPM | Power (W） |
Efficiency (g/W） |
| FA2812 KV1160 | 24.5 | HQ8040-3 | 40% | 880 | 8.3 | 11020 | 203.35 | 4.33 |
| 24.5 | 50% | 1150 | 11.8 | 12500 | 289.1 | 3.98 | ||
| 24.5 | 60% | 1480 | 16.2 | 14150 | 396.9 | 3.73 | ||
| 24.5 | 70% | 1950 | 23.8 | 16000 | 583.1 | 3.34 | ||
| 24.5 | 80% | 2400 | 33.7 | 17420 | 825.65 | 2.91 | ||
| 24.5 | 90% | 2830 | 43.7 | 18750 | 1070.65 | 2.64 | ||
| 24.5 | 100% | 3150 | 54.1 | 19730 | 1325.45 | 2.38 |
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