Emax
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730KVVariant sold out or unavailable
830KVVariant sold out or unavailable
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Overview The Emax ECOII 2814 brushless motor (3–6S) is offered in two KV options (730KV / 830KV) for RC drone FPV racing builds. It uses a 2814 stator (12N14P) and supports 9–10 inch propellers (730KV) or 8–9 inch propellers (830KV) based on the provided specifications and test data.
Key Features
3–6S cell support
Two KV options: 730KV or 830KV
12N14P configuration
4 mm shaft
18#AWG lead, 250 mm length
Specifications
Model
ECOII-2814
Motor dimensions
Ø33.2 × 46.45 mm
Stator/Framework
12N14P
Shaft diameter
4 mm
Lead
18#AWG, 250 mm
No. of cells
3–6S
KV730 Specifications
KV
730KV
Idle current (10V)
1.1A
Internal resistance
79mΩ
Propeller
9"–10"
Peak current (6S)
47.8A
Max power (6S)
1204W
Weight
79.7g (W/O Silicone Wire)
KV830 Specifications
KV
830KV
Idle current (10V)
1.3A
Internal resistance
64mΩ
Propeller
8"–9"
Peak current (6S)
62.8A
Max power (6S)
1582W
Weight
79.6g (W/O Silicone Wire)
Performance Test Data (25.2V) ECOII-2814-730KV — Emax Avia 9045 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
1.81
280
45.61
6.14
4850
25.2
3.63
530
91.48
5.79
6280
25.2
6.5
830
163.80
5.07
7700
25.2
10.3
1160
259.56
4.47
9020
25.2
15.2
1530
383.04
3.99
10200
25.2
21
1900
529.20
3.59
11420
25.2
28.2
2280
710.64
3.21
12460
25.2
37.3
2710
939.96
2.88
Max
ECOII-2814-730KV — HQ 9050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
1.76
270
44.35
6.09
4870
25.2
3.65
510
91.98
5.54
6270
25.2
6.55
830
165.06
5.03
7650
25.2
10.6
1180
267.12
4.42
8930
25.2
16
1580
403.20
3.92
10170
25.2
22.3
1990
561.96
3.54
11260
25.2
29.8
2400
750.96
3.20
12260
25.2
39.3
2850
990.36
2.88
Max
ECOII-2814-730KV — Emax Avia 1050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
2.2
360
55.44
6.49
4640
25.2
4.65
670
117.18
5.72
6030
25.2
8.28
1070
208.66
5.13
7320
25.2
13.1
1500
330.12
4.54
8500
25.2
19.2
1940
483.84
4.01
9620
25.2
26.7
2360
672.84
3.51
10600
25.2
35.3
2770
889.56
3.11
11460
25.2
47.1
3300
1186.92
2.78
Max
ECOII-2814-730KV — Gemfan 1050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
1.98
310
49.90
6.21
4750
25.2
4.15
630
104.58
6.02
6150
25.2
7.46
1010
187.99
5.37
7480
25.2
11.9
1440
299.88
4.80
8710
25.2
17.7
1890
446.04
4.24
9880
25.2
24.6
2340
619.92
3.77
10870
25.2
32.9
2790
829.08
3.37
11770
25.2
43.8
3250
1103.76
2.94
Max
ECOII-2814-730KV — HQ 1050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
2.15
350
54.18
6.46
4650
25.2
4.64
680
116.93
5.82
6030
25.2
8.35
1050
210.42
4.99
7300
25.2
13.2
1470
332.64
4.42
8450
25.2
19.8
1920
498.96
3.85
9550
25.2
26.9
2360
677.88
3.48
10520
25.2
35.4
2780
892.08
3.12
11330
25.2
47.8
3250
1204.56
2.70
Max
ECOII-2814-830KV — Emax Avia 9045 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
2.54
380
64.01
5.94
5420
25.2
5.15
680
129.78
5.24
7010
25.2
8.97
1030
226.04
4.56
8520
25.2
14.4
1450
362.88
4.00
10010
25.2
21
1870
529.20
3.53
11310
25.2
28.8
2270
725.76
3.13
12450
25.2
38
2680
957.60
2.80
13530
25.2
50.7
3120
1277.64
2.44
Max
ECOII-2814-830KV — Gemfan 9045 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
2.22
270
55.94
4.83
5580
25.2
4.38
550
110.38
4.98
7180
25.2
7.75
920
195.30
4.71
8750
25.2
12.5
1330
315.00
4.22
10270
25.2
18.5
1740
466.20
3.73
12890
25.2
25.6
2160
645.12
3.35
12900
25.2
34.3
2630
864.36
3.04
14080
25.2
45.1
3080
1136.52
2.71
Max
ECOII-2814-830KV — HQ 9050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
2.52
370
63.50
5.83
5430
25.2
5.15
690
129.78
5.32
6990
25.2
9.2
1070
231.84
4.62
8460
25.2
14.9
1500
375.48
3.99
9870
25.2
21.8
1950
549.36
3.55
11140
25.2
30.2
2390
761.04
3.14
12240
25.2
40.1
2850
1010.52
2.82
13240
25.2
53.2
3320
1340.64
2.48
Max
ECOII-2814-830KV — Emax Avia 1050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
3.12
480
78.62
6.11
5180
25.2
6.56
860
165.31
5.20
6700
25.2
11.5
1330
289.80
4.59
8030
25.2
18
1810
453.60
3.99
9310
25.2
26.3
2310
662.76
3.49
10410
25.2
36.3
2760
914.76
3.02
11330
25.2
47.1
3250
1186.92
2.74
12200
25.2
62.8
3800
1582.56
2.40
Max
ECOII-2814-830KV — Gemfan 1050 (3-blade propeller)
Voltage (V)
Current (A)
Thrust (g)
Power (W)
Efficiency (g/W)
Speed (RPM)
25.2
2.8
450
70.56
6.38
5280
25.2
5.85
850
147.42
5.77
6840
25.2
10.3
1280
259.56
4.93
8240
25.2
16.6
1800
418.32
4.30
9580
25.2
24.3
2310
612.36
3.77
10750
25.2
33.6
2800
846.72
3.31
11740
25.2
44.3
3290
1116.36
2.95
12640
25.2
59.5
3750
1499.40
2.50
Max
For build guidance or after-sales support, contact support@rcdrone.top or visit https://rcdrone.top/.
Applications
FPV racing and freestyle multi-rotor builds using 3–6S LiPo setups
Propeller setups referenced in the test tables (3-blade props in 9–10" or 8–9" ranges, depending on KV)
Details
Compact 2814 motor layout with key dimensions, 4 mm shaft size, and 3–6S wiring details for build planning.
25.2V test data for the 730KV option across 9–10 inch propellers, listing thrust, current draw, and efficiency.
