The EMAX ECO II 3214 brushless motor brings four KV options to 8–10-inch multirotor builds. The 450KV version is specified for 12S, 800KV and 900KV for 6–8S, and 1050KV for 6S. Each shares a 132g-with-wire platform, 12N14P architecture, M5 propeller shaft and 19 × 19mm four-hole mount.
Weight132gWith 270mm wires
Power system6S–12SKV-dependent support
Propeller range8–10″KV-dependent recommendation
KV options4450 / 800 / 900 / 1050KV
Designed for the build
One mounting footprint. Four power systems.
The 39.1mm-diameter, 49.8mm-long platform lets you choose a winding for your voltage and propeller while retaining the same 19 × 19mm mount. Match the ESC and battery to the selected KV; the family-wide 8–10-inch propeller range does not apply to every variant.
Swipe to explore all four KV options →
Find your winding
Four KV options. One mounting footprint.
Voltage, propeller range and winding resistance vary by KV. Choose the option that matches your battery, propeller and ESC setup.
450KV
12S choice for the 9–10-inch propeller range.
Cells12S
Propeller9–10″
Resistance103mΩ
800KV
6–8S option for 9–10-inch multirotor configurations.
Cells6–8S
Propeller9–10″
Resistance40mΩ
900KV
6–8S choice with an 8–10-inch published propeller range.
Cells6–8S
Propeller8–10″
Resistance35mΩ
1050KV
Highest-KV option, specified for 6S and 8–9-inch props.
Cells6S
Propeller8–9″
Resistance27mΩ
Swipe to read the platform details →
Weight is 132g with wire. The shared mechanical platform is specified across 450KV, 800KV, 900KV and 1050KV.
Motor anatomy
Fitment and construction, clearly marked.
The 3214 uses a steel M5 propeller shaft, ventilated anodized bell, multi-strand winding, precision bearing and a 19 × 19mm four-hole M3 mount. Its 270mm 16 AWG silicone leads leave room to route to the ESC.
12N14PMotor architecture
6mmBearing shaft
19 × 19mm4 × M3 mounting pattern
270mm16 AWG silicone leads
Swipe to inspect the hardware callouts →
Specifications
Mechanical and electrical details.
Shared hardware specifications apply across all four KV choices. Electrical resistance and idle current change with the winding.
Shared mechanical specification
Motor dimensions
Ø39.1 × 49.8mm
Weight
132g, with wire
Framework
12N14P
Bearing shaft
6mm
Prop shaft
M5, clockwise thread
Mounting pattern
19 × 19mm, 4 × M3
Motor lead
270mm, 16 AWG silicone wire
By KV option
450KV
12S · 9–10″ prop · 103mΩ · 0.9A idle at 10V
800KV
6–8S · 9–10″ prop · 40mΩ · 2.0A idle at 10V
900KV
6–8S · 8–10″ prop · 35mΩ · 2.2A idle at 10V
1050KV
6S · 8–9″ prop · 27mΩ · 2.8A idle at 10V
Measured performance
Full load-test data by KV and propeller.
The following measurements are from EMAX load-test records. Results may vary with battery, propeller, environment, and installation conditions.
450KV
Battery cells12S
Recommended prop9"-10"
Idle current0.9A @ 10V
Resistance103mΩ
Peak current (spec)55.9A
Max power (spec)2653W
HQ9050 3-blade propeller
ECO II 3214 Brushless Motor 450KV — HQ9050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
48
1.94
547
93.1
5.87
6055
30
48
3.56
896
170.9
5.24
7550
40
48
6.45
1404
309.6
4.53
9354
50
47.9
10.68
1993
511.6
3.90
11141
60
47.8
16.46
2657
786.8
3.38
12844
70
47.8
23.75
3336
1135.2
2.94
14343
80
47.7
32.76
4061
1562.7
2.60
15708
90
47.6
44.57
4838
2121.5
2.28
17031
100
HQ1050 3-blade propeller
ECO II 3214 Brushless Motor 450KV — HQ1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
48
2.06
581
98.9
5.88
5548
30
48
4.35
1070
208.8
5.12
7344
40
48
8.05
1706
386.4
4.42
9102
50
47.9
13.57
2429
650.0
3.74
10774
60
47.8
20.93
3220
1000.5
3.22
12360
70
47.7
30.05
4068
1433.4
2.84
13652
80
47.6
40.69
4823
1936.8
2.49
14763
90
47.5
55.86
5637
2653.3
2.12
15784
100
GF1050 3-blade propeller
ECO II 3214 Brushless Motor 450KV — GF1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
48
2.02
574
97.0
5.92
5621
30
48
4.19
1061
201.1
5.28
7388
40
48
7.7
1683
369.6
4.55
9264
50
47.9
12.86
2382
616.0
3.87
10884
60
47.8
19.5
3111
932.1
3.34
12552
70
47.7
27.67
3887
1319.9
2.95
13938
80
47.6
37.41
4621
1780.7
2.60
15201
90
47.5
48.62
5324
2309.4
2.31
16266
100
800KV
Battery cells6-8S
Recommended prop9"-10"
Idle current2.0A @ 10V
Resistance40mΩ
Peak current (spec)87.3A
Max power (spec)2714W
GF9045 3-blade propeller
ECO II 3214 Brushless Motor 800KV — GF9045 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
3.76
568
120.3
4.72
6955
30
32
6.53
935
209.0
4.47
8574
40
31.9
11.41
1449
364.0
3.98
10548
50
31.8
19.04
2108
605.5
3.48
12621
60
31.7
28.36
2750
899.0
3.06
14438
70
31.6
40.5
3455
1279.8
2.70
16107
80
31.5
55.69
4126
1754.2
2.35
17658
90
31.3
74.53
4846
2332.8
2.08
19127
100
HQ9050 3-blade propeller
ECO II 3214 Brushless Motor 800KV — HQ9050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
3.92
649
125.4
5.17
6621
30
32
7.7
1131
246.4
4.59
8461
40
31.9
13.9
1726
443.4
3.89
10434
50
31.8
23.46
2464
746.0
3.30
12377
60
31.7
35.15
3210
1114.3
2.88
14011
70
31.5
49.66
3986
1564.3
2.55
15464
80
31.3
67.49
4746
2112.4
2.25
16672
90
31.1
87.26
5477
2713.8
2.02
17720
100
HQ1050 3-blade propeller
ECO II 3214 Brushless Motor 800KV — HQ1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3.03
481
75.8
6.35
5007
30
24.9
6.4
901
159.4
5.65
6594
40
24.9
11.44
1372
284.9
4.82
8129
50
24.8
19.05
1962
472.4
4.15
9643
60
24.7
28.88
2580
713.3
3.62
11017
70
24.6
41.19
3222
1013.3
3.18
12262
80
24.5
55.74
3886
1365.6
2.85
13349
90
24.3
73.19
4716
1778.5
2.65
14320
100
AVIA1050 3-blade propeller
ECO II 3214 Brushless Motor 800KV — AVIA1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3
424
75.0
5.65
4985
30
25
5.89
784
147.2
5.32
6496
40
24.9
10.61
1241
264.2
4.70
8026
50
24.8
17.52
1850
434.5
4.26
9557
60
24.8
26.53
2449
657.9
3.72
10924
70
24.6
38.01
3129
935.0
3.35
12219
80
24.5
51.69
3789
1266.4
2.99
13392
90
24.3
67.63
4523
1643.4
2.75
14453
100
900KV
Battery cells6-8S
Recommended prop8"-10"
Idle current2.2A @ 10V
Resistance35mΩ
Peak current (spec)87.9A
Max power (spec)2672W
HQ9050 3-blade propeller
ECO II 3214 Brushless Motor 900KV — HQ9050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3.87
512
96.8
5.29
5943
30
24.9
7.15
860
178.0
4.83
7464
40
24.9
12.67
1329
315.5
4.21
9215
50
24.8
20.76
1886
514.8
3.66
10919
60
24.7
31.62
2514
781.0
3.22
12488
70
24.6
44.24
3118
1088.3
2.87
13874
80
24.4
60.47
3803
1475.5
2.58
15085
90
24.3
78.46
4489
1906.6
2.35
16166
100
GF1050 3-blade propeller
ECO II 3214 Brushless Motor 900KV — GF1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
24
3.84
532
92.2
5.77
5335
30
24
7.9
978
189.6
5.16
7015
40
23.9
13.67
1476
326.7
4.52
8595
50
23.8
22.74
2093
541.2
3.87
10261
60
23.7
34.39
2739
815.0
3.36
11751
70
23.6
47.65
3362
1124.5
2.99
13012
80
23.4
63.58
3961
1487.8
2.66
14157
90
23.3
81.03
4675
1888.0
2.48
15139
100
HQ1050 3-blade propeller
ECO II 3214 Brushless Motor 900KV — HQ1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
24
3.74
498
89.8
5.55
5460
30
23.9
7.38
898
176.4
5.09
7072
40
23.9
13.04
1395
311.7
4.48
8682
50
23.8
21.78
2009
518.4
3.88
10347
60
23.6
33.06
2692
780.2
3.45
11853
70
23.5
46.15
3342
1084.5
3.08
13135
80
23.4
61.89
3993
1448.2
2.76
14271
90
23.2
79.82
4698
1851.8
2.54
15297
100
AVIA1050 3-blade propeller
ECO II 3214 Brushless Motor 900KV — AVIA1050 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
24
3.82
486
91.7
5.30
5319
30
24
7.65
909
183.6
4.95
6947
40
23.9
13.67
1456
326.7
4.46
8597
50
23.8
22.58
2119
537.4
3.94
10176
60
23.7
34.52
2832
818.1
3.46
11641
70
23.6
48.17
3508
1136.8
3.09
12842
80
23.4
64.26
4173
1503.7
2.78
13966
90
23.2
82.26
4675
1908.4
2.45
14935
100
GF8*8E 2-blade propeller
ECO II 3214 Brushless Motor 900KV — GF8*8E 2-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
30.9
4.48
476
138.4
3.44
7827
30
30.9
7.58
742
234.2
3.17
9557
40
30.8
13.85
1217
426.6
2.85
11794
50
30.8
22.46
1745
691.8
2.52
13808
60
30.7
34.16
2258
1048.7
2.15
15639
70
30.6
49.47
2776
1513.8
1.83
17222
80
30.5
67.98
3343
2073.4
1.61
18666
90
30.4
87.88
3785
2671.6
1.42
20010
100
1050KV
Battery cells6S
Recommended prop8"-9"
Idle current2.8A @ 10V
Resistance27mΩ
Peak current (spec)86.3A
Max power (spec)2011W
GF8040 3-blade propeller
ECO II 3214 Brushless Motor 1050KV — GF8040 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.7
541
117.5
4.60
8030
30
25
7.66
813
191.5
4.25
9672
40
25
11.47
1114
286.8
3.88
11273
50
24.9
18.4
1608
458.2
3.51
13400
60
24.8
27.1
2152
672.1
3.20
15349
70
24.7
38.32
2706
946.5
2.86
17171
80
24.6
51.98
3319
1278.7
2.60
18940
90
24.4
69.31
4205
1691.2
2.49
20585
100
HQ8045 3-blade propeller
ECO II 3214 Brushless Motor 1050KV — HQ8045 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.79
528
119.8
4.41
7565
30
25
7.86
804
196.5
4.09
9123
40
25
12.98
1187
324.5
3.66
10956
50
24.9
21.75
1739
541.6
3.21
13021
60
24.8
32.52
2323
806.5
2.88
14825
70
24.7
46.02
2905
1136.7
2.56
16456
80
24.5
62.57
3511
1533.0
2.29
17924
90
24.3
81.92
4205
1990.7
2.11
19551
100
GF8060 3-blade propeller
ECO II 3214 Brushless Motor 1050KV — GF8060 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.94
574
123.5
4.65
7441
30
25
8.07
853
201.8
4.23
8965
40
24.9
13.52
1259
336.6
3.74
10880
50
24.9
22.12
1804
550.8
3.28
13061
60
24.8
32.51
2372
806.2
2.94
14891
70
24.7
45.48
2952
1123.4
2.63
16604
80
24.5
60.95
3520
1493.3
2.36
18213
90
24.3
80.34
4187
1952.3
2.14
19761
100
GF9045 3-blade propeller
ECO II 3214 Brushless Motor 1050KV — GF9045 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
24
4.79
567
115.0
4.93
6875
30
24
8.3
917
199.2
4.60
8443
40
24
14.43
1411
346.3
4.07
10313
50
23.9
23.93
2031
571.9
3.55
12289
60
23.7
35.19
2613
834.0
3.13
13996
70
23.6
49.55
3244
1169.4
2.77
15541
80
23.4
67.22
3758
1572.9
2.39
16841
90
23.3
86.29
4470
2010.6
2.22
18222
100
Swipe to read the package contents →
In the box
Motor and mounting hardware.
Each package includes one ECO II 3214 motor in the selected KV, four M3 × 10mm mounting screws and one aluminum M5 nylock nut. A propeller, ESC and battery are not listed as included.
EMAX ECO II 3214 brushless multirotor motor. Specifications and bench measurements transcribed from the supplied ECOII-3214 V1.0 basic-information, specification and KV load-test workbooks. Confirm propeller clearance, ESC capacity and thermal behavior in the completed aircraft. Graphics are based on supplied 3214 product photos; shared hardware appearance is representative of the motor family.
