ECOII Series / 35XX / ECO II
ECO II 3530 Brushless Motor
A high-efficiency 3530-class aircraft motor with 280KV, 445KV, 520KV, and 650KV configurations for 12 to 15 inch propeller platforms.
280KV445KV520KV650KV
KEY FEATURES
Designed for FPV performance tuning
- Four KV choices cover 5S through 12S power systems and 12 to 15 inch propellers.
- Precision bearings, a steel shaft, multi-strand winding, and an anodized motor structure support reliable high-load operation.
- A 25 x 25 mm four-hole M3 mounting pattern, 95 mm leads, and 4.0 mm connectors simplify installation.
- Verified load-test data is provided for every KV option, including voltage, current, thrust, power, efficiency, RPM, and throttle.
SPECIFICATIONS
Product snapshot
- Stator Size
- 3530
- Series
- ECO II
- KV Options
- 280KV, 445KV, 520KV, 650KV
- Motor Dimensions
- 42.5 x 82 mm
- Framework
- 12N14P
- Weight
- 300 g including wires
- Propeller
- 12-15 inch
- Bearing Shaft
- 6 mm
- Prop Adapter Shaft Thread
- M6
- Shaft Thread
- CW
- Mounting Pattern
- 25 x 25 mm, 4 x M3
- Lead
- 95 mm enameled wire outlet
- Connectors
- Three 4.0 mm female connectors
VARIANT SPECIFICATIONS
KV configuration matrix
| KV | Battery cells | Propeller | Idle current | Internal resistance | Peak current | Maximum power |
|---|---|---|---|---|---|---|
| 280KV | 12S | 15 inch | 0.8 A @ 10 V | 68 mOhm | 56.7 A @ 12S | 2677.4 W @ 12S |
| 445KV | 6S | 14-15 inch | 1.3 A @ 10 V | 32 mOhm | 57.2 A @ 6S | 1403.7 W @ 6S |
| 520KV | 6S | 13-14 inch | 1.5 A @ 10 V | 22 mOhm | 56.8 A @ 6S | 1394 W @ 6S |
| 650KV | 5-6S | 12-14 inch | 2.1 A @ 10 V | 16 mOhm | 82.5 A @ 6S | 2004.7 W @ 6S |
OFFICIAL GRAPHICS
Engineering drawing and specifications
| SPECIFICATIONS | |
|---|---|
| Framework | 12N14P |
| Length | 82 mm |
| Diameter | 42.5 mm |
| Battery cells - 280KV | 12S |
| Battery cells - 445KV / 520KV | 6S |
| Battery cells - 650KV | 5-6S |
| Recommended propeller | 12-15 inch |
| Weight (with wire) | 300 g |
| Prop adapter shaft thread | M6 |
| Bearing shaft | 6 mm |
| Shaft thread | CW |
| FEATURES | |
| Precision bearing | |
| Steel shaft | |
| Anodized finish | |
| 25 x 25 mm, 4 x M3 mounting-hole pattern | |
| Multi-strand winding | |
| 95 mm enameled wire outlet | |
| PACKAGE INCLUDES | |
| 5 x M3 x 6 screws | |
| 1 x steel M6 nyloc nut | |
| 1 x paddle gasket | |
| 1 x motor mount | |
| 3 x 4.0 mm female connectors | |
LOAD TEST DATA
Verified performance data
The following measurements are from EMAX load-test records. Results may vary with battery, propeller, environment, and installation conditions.
280KV
15 x 10, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 47.94 | 2.1 | 882 | 100.7 | 8.8 | 3480 | 30% |
| 47.9 | 4.6 | 1582 | 220.3 | 7.2 | 4590 | 40% |
| 47.84 | 8.6 | 2409 | 411.4 | 5.9 | 5640 | 50% |
| 47.76 | 14.1 | 3351 | 673.4 | 5 | 6610 | 60% |
| 47.67 | 21.4 | 4331 | 1020.1 | 4.2 | 7460 | 70% |
| 47.56 | 30.9 | 5214 | 1469.6 | 3.5 | 8250 | 80% |
| 47.39 | 42.9 | 6335 | 2033 | 3.1 | 9040 | 90% |
| 47.22 | 56.7 | 7115 | 2677.4 | 2.7 | 9690 | Max |
445KV
GF14 x 7, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 25.04 | 1.6 | 390 | 38.8 | 10.05 | 2980 | 30% |
| 25.02 | 3.1 | 730 | 78.4 | 9.31 | 3916 | 40% |
| 25 | 5.6 | 1160 | 139.7 | 8.3 | 4850 | 50% |
| 24.97 | 9.1 | 1660 | 226.2 | 7.34 | 5753 | 60% |
| 24.92 | 13.9 | 2250 | 345.9 | 6.5 | 6635 | 70% |
| 24.87 | 19.9 | 2870 | 494.5 | 5.8 | 7447 | 80% |
| 24.8 | 27.6 | 3550 | 683.8 | 5.19 | 8251 | 90% |
| 24.71 | 37.4 | 4330 | 925.3 | 4.68 | 9025 | Max |
HQ15 x 7, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 25.03 | 1.8 | 500 | 44.4 | 11.27 | 2934 | 30% |
| 25.02 | 3.6 | 880 | 90.2 | 9.76 | 3881 | 40% |
| 24.99 | 6.5 | 1370 | 161.4 | 8.49 | 4795 | 50% |
| 24.96 | 10.5 | 1960 | 262.2 | 7.48 | 5684 | 60% |
| 24.91 | 16 | 2610 | 397.8 | 6.56 | 6544 | 70% |
| 24.85 | 22.7 | 3280 | 563.8 | 5.82 | 7330 | 80% |
| 24.76 | 31.2 | 4030 | 772.6 | 5.22 | 8113 | 90% |
| 24.68 | 41.7 | 4850 | 1029.7 | 4.71 | 8866 | Max |
HQ15 x 10, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 25.02 | 2.3 | 610 | 58.7 | 10.38 | 2850 | 30% |
| 25 | 5 | 1080 | 124.1 | 8.7 | 3766 | 40% |
| 24.96 | 9 | 1640 | 223.5 | 7.34 | 4626 | 50% |
| 24.92 | 14.5 | 2270 | 360.5 | 6.3 | 5438 | 60% |
| 24.85 | 21.8 | 3000 | 542.7 | 5.53 | 6229 | 70% |
| 24.77 | 31 | 3730 | 768 | 4.86 | 6949 | 80% |
| 24.67 | 42.5 | 4500 | 1047.4 | 4.3 | 7633 | 90% |
| 24.54 | 57.2 | 5300 | 1403.7 | 3.78 | 8289 | Max |
520KV
GF13 x 6.5, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 25.01 | 2.1 | 500 | 52.2 | 9.57 | 3482 | 30% |
| 24.99 | 4.1 | 870 | 103 | 8.45 | 4554 | 40% |
| 24.96 | 7.3 | 1330 | 182.3 | 7.3 | 5622 | 50% |
| 24.92 | 12 | 1900 | 298.6 | 6.36 | 6682 | 60% |
| 24.87 | 18 | 2500 | 447.8 | 5.58 | 7649 | 70% |
| 24.79 | 25.9 | 3180 | 641.5 | 4.96 | 8608 | 80% |
| 24.7 | 36 | 3950 | 889 | 4.44 | 9520 | 90% |
| 24.59 | 49.2 | 4830 | 1208.9 | 4 | 10376 | Max |
GF14 x 7, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 25.01 | 2.2 | 550 | 56.2 | 9.79 | 3447 | 30% |
| 24.99 | 4.6 | 1000 | 114.9 | 8.71 | 4515 | 40% |
| 24.95 | 8.3 | 1560 | 206.5 | 7.55 | 5568 | 50% |
| 24.91 | 13.7 | 2230 | 340.8 | 6.54 | 6602 | 60% |
| 24.85 | 20.8 | 2950 | 517.3 | 5.7 | 7525 | 70% |
| 24.76 | 30.1 | 3750 | 745.2 | 5.03 | 8436 | 80% |
| 24.66 | 42.1 | 4650 | 1038.7 | 4.48 | 9295 | 90% |
| 24.53 | 56.8 | 5510 | 1394 | 3.95 | 10112 | Max |
650KV
GF14 x 7, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 21.08 | 2.9 | 590 | 62.2 | 9.49 | 3546 | 30% |
| 21.04 | 5.9 | 1050 | 125.1 | 8.39 | 4615 | 40% |
| 21 | 10.7 | 1610 | 223.7 | 7.2 | 5662 | 50% |
| 20.94 | 17.5 | 2290 | 365.9 | 6.26 | 6682 | 60% |
| 20.86 | 26.2 | 2990 | 546.9 | 5.47 | 7579 | 70% |
| 20.76 | 37.5 | 3790 | 779.3 | 4.86 | 8480 | 80% |
| 20.63 | 52.1 | 4650 | 1074 | 4.33 | 9323 | 90% |
| 20.47 | 70.7 | 5550 | 1447.6 | 3.83 | 10099 | Max |
HQ12 x 6, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 24.98 | 2.8 | 540 | 69.8 | 7.74 | 4349 | 30% |
| 24.95 | 5.5 | 950 | 137.3 | 6.92 | 5685 | 40% |
| 24.92 | 9.6 | 1460 | 239.2 | 6.1 | 6979 | 50% |
| 24.87 | 15.5 | 2060 | 384.5 | 5.36 | 8218 | 60% |
| 24.8 | 23.4 | 2760 | 581.4 | 4.75 | 9459 | 70% |
| 24.71 | 33.7 | 3490 | 833 | 4.19 | 10578 | 80% |
| 24.6 | 46.5 | 4280 | 1142.9 | 3.74 | 11670 | 90% |
| 24.46 | 62.1 | 5060 | 1519.9 | 3.33 | 12701 | Max |
HQ13 x 6.5, 2-blade
| VoltageV | CurrentA | Thrustg | PowerW | Efficiencyg/W | SpeedRPM | Throttle% |
|---|---|---|---|---|---|---|
| 24.98 | 3.5 | 740 | 87 | 8.51 | 4213 | 30% |
| 24.94 | 7 | 1270 | 175.7 | 7.23 | 5477 | 40% |
| 24.89 | 12.7 | 1920 | 316.6 | 6.07 | 6736 | 50% |
| 24.83 | 20.6 | 2650 | 512.5 | 5.17 | 7890 | 60% |
| 24.73 | 31.2 | 3500 | 771.9 | 4.53 | 9013 | 70% |
| 24.61 | 44.9 | 4400 | 1104.1 | 3.99 | 10041 | 80% |
| 24.47 | 61.7 | 5330 | 1510.5 | 3.53 | 10997 | 90% |
| 24.29 | 82.5 | 6250 | 2004.7 | 3.12 | 11910 | Max |
APPLICATIONS
Recommended use
large FPVlarge fixed-wing RC aircraft12-15 inch propeller platformshigh-load aerial propulsionengineering and custom aircraft projectsspecialty builds