The EMAX ECO II 3210 brushless motor brings four KV options to 8–10-inch multirotor builds. The 800KV and 900KV versions support 6–8S; the 1050KV and 1200KV versions are specified for 6S. Each shares a 99g-with-wire platform, 12N14P architecture, M5 propeller shaft and 19 × 19mm four-hole mount.
Weight99gWith 270mm wires
Power system6S–8SKV-dependent support
Propeller range8–10″KV-dependent recommendation
KV options4800 / 900 / 1050 / 1200KV
Designed for the build
The ECO II step into larger props.
A common 39.1mm-diameter platform lets you choose the winding for the power system rather than changing your mechanical footprint. Match the propeller, ESC and battery to the specific KV/voltage combination; the published 8–10-inch range applies to the motor family, not 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.
800KV
Lower-KV choice with the broadest published propeller range.
Cells6–8S
Propeller8–10″
Resistance58mΩ
900KV
6–8S option for 8–9-inch multirotor configurations.
Cells6–8S
Propeller8–9″
Resistance52mΩ
1050KV
6S choice with an 8–9-inch published propeller range.
Cells6S
Propeller8–9″
Resistance41mΩ
1200KV
Highest-KV option, specified for 6S and 8-inch props.
Cells6S
Propeller8″
Resistance35mΩ
Swipe to read the platform details →
Weight is 99g with wire. The shared mechanical platform is specified across 800KV, 900KV, 1050KV and 1200KV.
Motor anatomy
Fitment and construction, clearly marked.
The 3210 uses a steel M5 propeller shaft, ventilated anodized bell, multi-strand winding, precision bearing and a 19 × 19mm four-hole M3 mount. Its 270mm 18 AWG silicone leads leave room to route to the ESC.
12N14PMotor architecture
6mmBearing shaft
19 × 19mm4 × M3 mounting pattern
270mm18 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 × 45.8mm
Weight
99g, with wire
Framework
12N14P
Bearing shaft
6mm
Prop shaft
M5, clockwise thread
Mounting pattern
19 × 19mm, 4 × M3
Motor lead
270mm, 18 AWG silicone wire
By KV option
800KV
6–8S · 8–10″ prop · 58mΩ · 1.5A idle at 10V
900KV
6–8S · 8–9″ prop · 52mΩ · 1.6A idle at 10V
1050KV
6S · 8–9″ prop · 41mΩ · 1.9A idle at 10V
1200KV
6S · 8″ prop · 35mΩ · 2.4A 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.
800KV
Battery cells6-8S
Recommended prop8"-10"
Idle current1.5A @ 10V
Resistance58mΩ
Peak current (spec)59.4A
Max power (spec)1449W
HQ8045 3-blade propeller
ECO II 3210 Brushless Motor 800KV — HQ8045, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
2.56
445
81.9
5.43
6867
30
32
5.24
781
167.7
4.66
8890
40
31.9
9.47
1187
302.1
3.93
10851
50
31.9
15.18
1638
484.2
3.38
12605
60
31.8
22.31
2102
709.5
2.96
14242
70
31.7
31.53
2666
999.5
2.67
15773
80
31.6
42.17
3170
1332.6
2.38
17227
90
31.4
56.86
3864
1785.4
2.16
18452
100
GF8040 3-blade propeller
ECO II 3210 Brushless Motor 800KV — GF8040, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
2.26
402
72.3
5.56
7002
30
32
4.54
717
145.3
4.94
9087
40
31.9
7.89
1088
251.7
4.32
11115
50
31.9
12.6
1505
401.9
3.74
13029
60
31.8
18.58
1970
590.8
3.33
14862
70
31.7
26.55
2531
841.6
3.01
16717
80
31.7
35.56
3042
1127.3
2.70
18210
90
31.5
48.35
3813
1523.0
2.50
19755
100
GF8060 3-blade propeller
ECO II 3210 Brushless Motor 800KV — GF8060, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
2.68
455
85.8
5.31
6804
30
32
5.48
814
175.4
4.64
8842
40
31.9
9.61
1228
306.6
4.01
10827
50
31.9
15.13
1661
482.6
3.44
12639
60
31.8
22.09
2132
702.5
3.04
14303
70
31.7
30.73
2659
974.1
2.73
15920
80
31.6
41.6
3224
1314.6
2.45
17383
90
31.5
56.12
3962
1767.8
2.24
18737
100
GF1050 3-blade propeller
ECO II 3210 Brushless Motor 800KV — GF1050, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
2.78
477
69.5
6.86
5068
30
25
5.83
843
145.8
5.78
6596
40
24.9
10.24
1244
255.0
4.88
7987
50
24.9
16.02
1704
398.9
4.27
9308
60
24.8
23.56
2190
584.3
3.75
10514
70
24.7
32.55
2647
804.0
3.29
11577
80
24.6
42.62
3118
1048.5
2.97
12526
90
24.5
54.31
3559
1330.6
2.67
13386
100
HQ1050 3-blade propeller
ECO II 3210 Brushless Motor 800KV — HQ1050, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
2.85
492
71.2
6.91
5043
30
25
5.99
855
149.8
5.71
6546
40
24.9
10.67
1290
265.7
4.86
7901
50
24.9
16.62
1755
413.8
4.24
9169
60
24.8
24.56
2257
609.1
3.71
10340
70
24.7
34.21
2743
845.0
3.25
11333
80
24.6
45.3
3235
1114.4
2.90
12217
90
24.5
57.77
3679
1415.4
2.60
13055
100
HQ1055 3-blade propeller
ECO II 3210 Brushless Motor 800KV — HQ1055, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
2.99
478
74.8
6.39
5017
30
25
6.38
851
159.5
5.34
6473
40
24.9
11.18
1277
278.4
4.59
7816
50
24.9
17.46
1753
434.8
4.03
9047
60
24.8
25.61
2242
635.1
3.53
10172
70
24.7
35.6
2777
879.3
3.16
11143
80
24.6
46.57
3237
1145.6
2.83
11978
90
24.4
59.39
3680
1449.1
2.54
12659
100
900KV
Battery cells6-8S
Recommended prop8"-9"
Idle current1.6A @ 10V
Resistance52mΩ
Peak current (spec)70.5A
Max power (spec)2208W
GF9045 3-blade propeller
ECO II 3210 Brushless Motor 900KV — GF9045, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
2.68
397
67.0
5.93
5856
30
25
5.54
750
138.5
5.42
7634
40
24.9
9.77
1138
243.3
4.68
9312
50
24.9
15.54
1561
386.9
4.03
10876
60
24.8
22.64
1992
561.5
3.55
12290
70
24.7
31.19
2454
770.4
3.19
13617
80
24.6
42.03
2945
1033.9
2.85
14840
90
24.5
54.9
3408
1345.0
2.53
15925
100
HQ9050 3-blade propeller
ECO II 3210 Brushless Motor 900KV — HQ9050, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3.05
473
76.2
6.20
5711
30
25
6.47
844
161.8
5.22
7426
40
25
11.37
1268
284.2
4.46
8995
50
24.9
18.45
1734
459.4
3.77
10461
60
24.8
26.68
2219
661.7
3.35
11774
70
24.7
36.69
2710
906.2
2.99
12911
80
24.6
48.83
3195
1201.2
2.66
13925
90
24.5
62.96
3680
1542.5
2.39
14893
100
GF8040 3-blade propeller
ECO II 3210 Brushless Motor 900KV — GF8040, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
3.01
509
96.3
5.28
7704
30
32
6.07
886
194.2
4.56
9972
40
31.9
10.67
1312
340.4
3.85
12116
50
31.8
16.82
1793
534.9
3.35
14115
60
31.8
24.67
2349
784.5
2.99
16036
70
31.7
35.36
2985
1120.9
2.66
17833
80
31.5
47
3551
1480.5
2.40
19366
90
31.4
61.49
4318
1930.8
2.24
21104
100
HQ8045 3-blade propeller
ECO II 3210 Brushless Motor 900KV — HQ8045, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
3.37
527
107.8
4.89
7499
30
31.9
7
933
223.3
4.18
9746
40
31.9
12.42
1399
396.2
3.53
11786
50
31.8
19.86
1918
631.5
3.04
13594
60
31.7
29.2
2468
925.6
2.67
15271
70
31.6
40.49
3013
1279.5
2.35
16895
80
31.5
55.15
3558
1737.2
2.05
18009
90
31.3
70.55
4378
2208.2
1.98
19853
100
GF8046 3-blade propeller
ECO II 3210 Brushless Motor 900KV — GF8046, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
32
2.66
379
85.1
4.45
7842
30
32
5.27
731
168.6
4.33
10210
40
31.9
9.16
1112
292.2
3.81
12408
50
31.9
14.59
1548
465.4
3.33
14510
60
31.8
21.38
2052
679.9
3.02
16596
70
31.7
30.07
2640
953.2
2.77
18536
80
31.6
40.68
3066
1285.5
2.39
20212
90
31.5
53.92
3590
1698.5
2.11
22159
100
1050KV
Battery cells6S
Recommended prop8"-9"
Idle current1.9A @ 10V
Resistance41mΩ
Peak current (spec)77.9A
Max power (spec)1893W
GF8040 3-blade propeller
ECO II 3210 Brushless Motor 1050KV — GF8040, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3.26
430
81.5
5.28
7195
30
25
6.29
742
157.2
4.72
9205
40
24.9
10.98
1133
273.4
4.14
11236
50
24.9
17.08
1532
425.3
3.60
13076
60
24.8
25
1990
620.0
3.21
14808
70
24.7
34.98
2503
864.0
2.90
16515
80
24.6
46.58
2996
1145.9
2.61
18025
90
24.5
60.92
3692
1492.5
2.47
19419
100
HQ8045 3-blade propeller
ECO II 3210 Brushless Motor 1050KV — HQ8045, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3.61
453
90.2
5.02
7001
30
25
7.29
797
182.2
4.37
8979
40
24.9
12.79
1187
318.5
3.73
10931
50
24.9
20.22
1614
503.5
3.21
12639
60
24.8
29.49
2079
731.4
2.84
14145
70
24.7
40.58
2537
1002.3
2.53
15640
80
24.5
54
2996
1323.0
2.26
17013
90
24.4
70.84
3710
1728.5
2.15
18445
100
GF8060 3-blade propeller
ECO II 3210 Brushless Motor 1050KV — GF8060, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
3.75
476
93.8
5.08
6899
30
25
7.57
845
189.2
4.46
8915
40
24.9
13.16
1250
327.7
3.81
10862
50
24.9
20.47
1690
509.7
3.32
12626
60
24.8
29.31
2134
726.9
2.94
14169
70
24.7
40.37
2627
997.1
2.63
15702
80
24.5
54.28
3173
1329.9
2.39
17037
90
24.4
69.37
3784
1692.6
2.24
18581
100
GF9045 3-blade propeller
ECO II 3210 Brushless Motor 1050KV — GF9045, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.1
545
102.5
5.32
6758
30
25
8.44
965
211.0
4.57
8725
40
24.9
14.87
1459
370.3
3.94
10567
50
24.8
23.21
1970
575.6
3.42
12264
60
24.7
33.09
2445
817.3
2.99
13645
70
24.6
45.46
2972
1118.3
2.66
15016
80
24.5
60.28
3484
1476.9
2.36
16192
90
24.3
77.9
3920
1893.0
2.07
17180
100
1200KV
Battery cells6S
Recommended prop8"
Idle current2.4A @ 10V
Resistance35mΩ
Peak current (spec)88.6A
Max power (spec)2135W
GF8040 3-blade propeller
ECO II 3210 Brushless Motor 1200KV — GF8040, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.45
519
111.2
4.67
7821
30
24.9
7.81
831
194.5
4.27
9678
40
24.9
14.04
1284
349.6
3.67
12043
50
24.8
22.31
1784
553.3
3.22
14090
60
24.7
32.62
2303
805.7
2.86
15993
70
24.6
45.92
2906
1129.6
2.57
17655
80
24.4
61.28
3468
1495.2
2.32
19176
90
24.3
79.4
4181
1929.4
2.17
20753
100
HQ8045 3-blade propeller
ECO II 3210 Brushless Motor 1200KV — HQ8045, 3-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.55
503
113.8
4.42
7401
30
24.9
8.5
861
211.7
4.07
9330
40
24.8
15.69
1310
389.1
3.37
11541
50
24.7
25.53
1862
630.6
2.95
13457
60
24.6
37.59
2400
924.7
2.60
15112
70
24.5
52
2903
1274.0
2.28
16543
80
24.3
68.86
3392
1673.3
2.03
17810
90
24.1
88.58
4079
2134.8
1.91
19312
100
GF8*6E 2-blade propeller
ECO II 3210 Brushless Motor 1200KV — GF8*6E, 2-blade
Voltage V
Current A
Thrust g
Power W
Efficiency g/W
Speed RPM
Throttle %
25
4.36
468
109.0
4.29
7850
30
24.9
7.61
743
189.5
3.92
9705
40
24.9
13.91
1180
346.4
3.41
11992
50
24.8
22.26
1643
552.0
2.98
13988
60
24.7
32.95
2116
813.9
2.60
15806
70
24.5
46.71
2589
1144.4
2.26
17371
80
24.4
63.49
2833
1549.2
1.83
18706
90
24.2
83.07
3285
2010.3
1.63
20170
100
Swipe to read the package contents →
In the box
Motor and mounting hardware.
Each package includes one ECO II 3210 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 3210 brushless multirotor motor. Specifications transcribed from the supplied ECOII-3210 V1.0 basic-information and specification workbooks. Confirm propeller clearance, ESC capacity and thermal behavior in the completed aircraft. Graphics are based on an 800KV sample; shared hardware appearance is representative of the motor family.
