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Emax ECOII 2814 3-6S Brushless Motor 730KV/830KV for RC Drone FPV Racing (12N14P, 4mm Shaft)

Emax ECOII 2814 3-6S Brushless Motor 730KV/830KV for RC Drone FPV Racing (12N14P, 4mm Shaft)

Emax ECOII 2814 3-6S Brushless Motor 730KV/830KV for RC Drone FPV Racing (12N14P, 4mm Shaft)

Original price was: $54.56.Current price is: $27.28.
  • SKU:WKA86610369524
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Overview

The Emax ECOII 2814 brushless motor (36S) is offered in two KV options (730KV / 830KV) for RC drone FPV racing builds. It uses a 2814 stator (12N14P) and supports 910 inch propellers (730KV) or 89 inch propellers (830KV) based on the provided specifications and test data.

Key Features

  • 36S 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 33.2 46.45 mm
Stator/Framework 12N14P
Shaft diameter 4 mm
Lead 18#AWG, 250 mm
No. of cells 36S

KV730 Specifications

KV 730KV
Idle current (10V) 1.1A
Internal resistance 79m
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 64m
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 [email protected] or visit https://rcdrone.top/.

Applications

  • FPV racing and freestyle multi-rotor builds using 36S LiPo setups
  • Propeller setups referenced in the test tables (3-blade props in 910″ or 89″ ranges, depending on KV)

Details

Compact 2814 motor layout with key dimensions, 4 mm shaft size, and 36S wiring details for build planning.

25.2V test data for the 730KV option across 910 inch propellers, listing thrust, current draw, and efficiency.

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