The APC 7.8x4 is a 7.8×4 inch, 2-blade propeller weighing 17.9 g.
| Maker | APC |
|---|---|
| Model | 7.8x4 |
| Size | 7.8×4 in |
|---|---|
| Pitch | 4.00 in |
| Blades | 2 |
| Rotation | CCW |
| P/D | 0.51 |
| Weight | 0.04 lb |
| Max RPM | 31,000 |
|---|
| Throttle | RPM | Thrust (lb) | Power (W) | Current (A) | Efficiency (%) | g/W |
|---|---|---|---|---|---|---|
| 30 % | 4,388 | 0.23 lb | 21 W | 0.4 | 26.3 | 4.85 |
| 40 % | 5,757 | 0.40 lb | 33 W | 0.7 | 38.2 | 5.52 |
| 50 % | 7,114 | 0.61 lb | 46 W | 0.9 | 50.8 | 6.04 |
| 60 % | 8,457 | 0.88 lb | 62 W | 1.2 | 63 | 6.38 |
| 70 % | 9,783 | 1.18 lb | 83 W | 1.7 | 73.4 | 6.49 |
| 80 % | 11,088 | 1.53 lb | 109 W | 2.2 | 81 | 6.36 |
| 90 % | 12,364 | 1.92 lb | 144 W | 2.9 | 85.1 | 6.03 |
| 100 % | 13,119 | 2.17 lb | 171 W | 3.5 | 86 | 5.76 |