Overview

EMAX ECOII 4215 is a brushless motor series offered in 350KV / 420KV / 520KV / 660KV options, specified for 612S LiPo setups depending on KV. It uses a 12N14P framework and is specified with a 13″ propeller.

Key Features

Precision bearing
Steel shaft
Anodizing
30 x 30 mm hole pattern
Multi-strand winding
300 mm 16 AWG silicone wire

Specifications

Mechanical

Framework	12N14P
Motor dimensions	49.1 x 65.35 mm
Length	65.35 mm
Diameter	49.1 mm
Bearing shaft	6 mm
Prop adapter shaft thread	M6
Shaft thread	CW
Lead	16#AWG 300 mm
Propeller	13″
Weight	209 g (W/O Silicone Wire)

Electrical (by KV option)

KV	No. of cells	Idle current (10V)	Internal resistance	Peak current	Max power	Weight
350KV	612S	1.0 A	62 m	71 A (12S)	3408 W (12S)	209 g (W/O Silicone Wire)
420KV	610S	1.2 A	49 m	81 A (10S)	3240 W (10S)	209 g (W/O Silicone Wire)
520KV	68S	1.9 A	38 m	75 A (10S)	2400 W (10S)	209 g (W/O Silicone Wire)
660KV	6S	2.3 A	26 m	90 A (10S)	2250 W (10S)	210 g (W/O Silicone Wire)

Thrust Test Data

ECOII-4215-350KV (48 V)

Gemfan1310 3-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
48	2.67	870	128.16	6.79	4270
48	5.6	1540	268.80	5.73	5570
48	9.97	2370	478.56	4.95	6800
48	15.8	3250	758.40	4.29	7910
48	23.5	4260	1128.00	3.78	9010
48	33.2	5250	1593.60	3.29	9940
48	45.3	6230	2174.40	2.87	10860
48	62.2	7500	2985.60	2.51	Max

HQ 1309 3-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
48	3.03	1020	145.44	7.01	4210
48	6.38	1790	306.24	5.85	5460
48	11.4	2680	547.20	4.90	6650
48	17.9	3600	859.20	4.19	7710
48	26.8	4650	1286.40	3.61	8740
48	37.4	5680	1795.20	3.16	9650
48	50.9	6700	2443.20	2.74	10510
48	70.7	8130	3393.60	2.40	Max

13×4 2-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
48	1.5	520	72.00	7.22	4540
48	3.07	980	147.36	6.65	5910
48	5.52	1580	264.96	5.96	7300
48	8.9	2260	427.20	5.29	8610
48	13.6	3080	652.80	4.72	9880
48	19.4	3950	931.20	4.24	11020
48	26.6	4920	1276.80	3.85	12110
48	36.2	6080	1737.60	3.50	Max

ECOII-4215-420KV (40 V)

Gemfan1310 3-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
40	3.16	870	126.40	6.88	4250
40	6.6	1520	264.00	5.76	5530
40	11.8	2310	472.00	4.89	6750
40	18.6	3170	744.00	4.26	7830
40	27.8	4160	1112.00	3.74	8890
40	38.8	5120	1552.00	3.30	9820
40	52.7	6100	2108.00	2.89	10690
40	71.3	7250	2852.00	2.54	Max

HQ 1309 3-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
40	3.62	1040	144.80	7.18	4180
40	7.57	1790	302.80	5.91	5410
40	13.4	2650	536.00	4.94	6580
40	21	3520	840.00	4.19	7620
40	31.1	4510	1244.00	3.63	8650
40	43.2	5500	1728.00	3.18	9540
40	58.5	6520	2340.00	2.79	10360
40	80.6	7840	3224.00	2.43	Max

13×4 2-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
40	1.8	500	72.00	6.94	4520
40	3.62	950	144.80	6.56	5890
40	6.48	1520	259.20	5.86	7250
40	10.4	2190	416.00	5.26	8540
40	15.9	2980	636.00	4.69	9800
40	22.7	3810	908.00	4.20	10940
40	31	4710	1240.00	3.80	12010
40	42	5780	1680.00	3.44	Max

ECOII-4215-520KV (32 V) HQ 1309 3-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
32	1.49	406	47.68	8.52	2760
32	3.91	928	125.12	7.42	3996
32	7.92	1562	253.44	6.16	5131
32	13.6	2260	435.20	5.19	6165
32	21.1	3032	675.20	4.49	7116
32	30.4	3810	972.80	3.92	8009
32	41.8	4602	1337.60	3.44	8848
32	55.2	5360	1766.40	3.03	9578
32	73.9	6350	2364.80	2.69	Max

ECOII-4215-660KV (25 V) HQ 1309 3-blade propeller

Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)	Speed (RPM)
25	0.49	66	12.25	5.39	1522
25	2.18	374	54.50	6.86	2847
25	5.73	892	143.25	6.23	4078
25	11.5	1551	287.50	5.39	5187
25	19.8	2260	495.00	4.57	6185
25	30.9	3020	772.50	3.91	7085
25	43.8	3750	1095.00	3.42	7920
25	60.3	4561	1507.50	3.03	8672
25	78.6	5310	1965.00	2.70	9360
25	85.3	5980	2132.50	2.80	Max

Whats Included

4x M4 x 12 screw
1x Steel M6 nylock nut
1x Paddle gasket

Support

For KV selection and 612S/propeller matching guidance for the ECOII 4215 brushless motor, contact [email protected] or visit https://rcdrone.top/.

Details

Designed around a 12N14P framework, the ECOII 4215 uses a 3030 mm mounting pattern and an M6 CW shaft for common multirotor builds.

Choose the KV option to match your voltage and prop setup, with 350KV through 660KV variants covering 612S configurations depending on model.

Performance data for the 350KV version lists thrust, current draw, power, efficiency, and RPM across multiple 13-inch propeller choices.

The 420KV test results provide a quick reference for expected thrust and efficiency at 40V with popular 13-inch prop combinations.

Add a Review

Your email address will not be published. Required fields are marked *

Related Products

Axisflying AF2406 2080KV Brushless Motor for 5 Inch Freestyle FPV Drone Motor Replacement

Sale

Shopping Cart

Menu

EMAX ECOII 4215 Brushless Motor 6-12S 350KV 420KV 520KV 660KV 12N14P M6 CW Shaft