E3 Series / 14XX / E3 Series

E3 1404 Brushless Motor

A lightweight 1404 brushless motor for responsive 2-4 inch FPV platforms, available in 3700KV, 4800KV and 6000KV for 2-4S systems.

3700KV4800KV6000KV

Buy on EMAX Send Inquiry Back to Motors

KEY FEATURES

Designed for FPV performance tuning

AL 7075 anodized construction and a steel shaft provide a lightweight, impact-resistant structure for compact FPV builds.
N52SH arc magnets and single-strand winding support responsive power delivery while controlling heat.
An NSK precision bearing reduces high-speed noise and vibration across the 3700KV, 4800KV and 6000KV range.
Verified load-test data covers all three KV options with 2-4 inch propellers across 2S, 3S and 4S test conditions.

SPECIFICATIONS

Product snapshot

Stator Size: 1404
Series: E3 Series
KV Options: 3700KV, 4800KV, 6000KV
Motor Dimensions: 19.1 x 17.4 mm
Framework: 9N12P
Battery: 2-4S, KV dependent
Propeller: 2-4 inch, KV dependent
Weight: 9.9 g with wire
Bearing Shaft: 2 mm
Prop Adapter Shaft: 1.5 mm
Mounting Pattern: 9 x 9 mm, 4 x M2
Lead: 120 mm 24 AWG silicone wire

VARIANT SPECIFICATIONS

KV configuration matrix

KV	Battery cells	Propeller	Idle current	Internal resistance	Peak current	Maximum power
3700KV	3-4S	3-4 inch	0.6 A @ 10 V	238 mOhm	14.2 A @ 4S	228 W @ 4S
4800KV	3-4S	3-4 inch	0.8 A @ 8 V	157 mOhm	16.9 A @ 4S	270 W @ 4S
6000KV	2-4S	2-3.5 inch	1 A @ 7 V	103 mOhm	19.8 A @ 4S	316 W @ 4S

ENGINEERING AND PERFORMANCE

Lightweight power built for high RPM

Critical materials and components are selected to maintain responsive performance under heat, high RPM and impact in compact FPV aircraft.

Built robust

AL 7075 construction and a steel shaft help preserve alignment after impact.

Withstands heat

N52SH arc magnets help control heat-related power fading during sustained operation.

Rapid response

Single-strand winding supports crisp throttle response for lightweight FPV platforms.

Critical component construction

Steel shaft

Resists bending to reduce vibration and rotor contact after impact.

AL 7075 anodized construction

Combines impact resistance with a lightweight, corrosion-resistant structure.

N52SH arc magnets

Retains magnetic strength at elevated temperatures to limit torque drop-off.

Single-strand winding

Supports efficient current delivery and heat control in a compact stator.

NSK precision bearing

Reduces high-speed noise and vibration while supporting service life.

Choose the E3 1404 KV for your aircraft

3700KV

Efficient 4S control

A controlled 3-4S option for 3-4 inch FPV platforms.

4800KV

Balanced response

A versatile 3-4S option balancing efficiency and punch.

6000KV

Maximum agility

A high-response 2-4S option for lightweight 2-3.5 inch builds.

Performance without excess weight

The E3 1404 combines optimized materials and compact construction for demanding FPV aircraft.

A flexible compact power platform

Three KV options cover efficient 4S builds through agile 2S and 3S aircraft.

OFFICIAL GRAPHICS

Engineering drawing and specifications

E3 1404 Brushless Motor technical specifications
SPECIFICATIONS
Framework	9N12P
Length	17.4 mm
Diameter	19.1 mm
Battery cells - 3700KV / 4800KV	3-4S
Battery cells - 6000KV	2-4S
Recommended propeller - 3700KV / 4800KV	3-4 inch
Recommended propeller - 6000KV	2-3.5 inch
Weight	9.9 g with wire
Prop adapter shaft	1.5 mm
Bearing shaft	2 mm
FEATURES
NSK precision bearing
Steel shaft
AL 7075 anodized construction
N52SH arc magnets
9 x 9 mm M2 mounting-hole pattern
Single-strand winding
120 mm 24 AWG silicone wire
PACKAGE INCLUDES
5 x M2 x 5 mm screws
5 x M2 x 6 mm screws
3 x M2 x 6.5 mm screws

LOAD TEST DATA

Verified performance data

The following measurements are from EMAX load-test records. Results may vary with battery, propeller, environment, and installation conditions.

3700KV

HQ T76 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - HQ T76 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.71	101	27.36	3.692	16963	40
16	4.29	202	68.64	2.943	23886	60
16	7.64	290	122.24	2.372	28621	80
16	13.07	384	209.12	1.836	32990	Max

HQ T76 (4-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - HQ T76 (4-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.82	104	29.12	3.571	16306	40
16	4.73	208	75.68	2.748	22702	60
16	8.53	298	136.48	2.183	26952	80
16	14.24	380	227.84	1.668	30420	Max

HQ 3*1.6 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - HQ 3*1.6 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.29	85	20.64	4.118	20388	40
16	2.85	161	45.6	3.531	27240	60
16	5.35	250	85.6	2.921	33271	80
16	10.01	369	160.16	2.304	39731	Max

HQ 3*3 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - HQ 3*3 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.66	97	26.56	3.652	17293	40
16	4.11	194	65.76	2.95	24323	60
16	7.44	284	119.04	2.386	29349	80
16	12.91	382	206.56	1.849	33936	Max

HQ 3.5*2 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - HQ 3.5*2 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.64	97	26.24	3.697	17545	40
16	4.04	199	64.64	3.079	24579	60
16	7.35	294	117.6	2.5	29567	80
16	12.92	399	206.72	1.93	34164	Max

GF3520 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - GF3520 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.61	104	25.76	4.037	17858	40
16	3.91	211	62.56	3.373	24811	60
16	7.15	313	114.4	2.736	29898	80
16	12.58	426	201.28	2.116	34628	Max

HQ 3.5*2.5 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 3700KV - HQ 3.5*2.5 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.78	112	28.48	3.933	16424	40
16	4.59	227	73.44	3.091	23143	60
16	8.26	327	132.16	2.474	27660	80
16	13.84	420	221.44	1.897	31236	Max

AVAN mini 3-inch 3-bladed propeller - 16 V

E3 1404 Brushless Motor 3700KV - AVAN mini 3-inch 3-bladed propeller - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.66	95	26.56	3.577	17453	40
16	4.11	189	65.76	2.874	24289	60
16	7.53	275	120.48	2.283	28946	80
16	13.11	365	209.76	1.74	33007	Max

HQ T4*2.5 (2-blade propeller) - 12 V

E3 1404 Brushless Motor 3700KV - HQ T4*2.5 (2-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	1.4	84	16.8	5	13274	40
12	3.41	162	40.92	3.959	18227	60
12	6.28	246	75.36	3.264	22240	80
12	10.77	335	129.24	2.592	25778	Max

4800KV

HQ 3*1.6 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 4800KV - HQ 3*1.6 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	2.1	121	33.6	3.601	24215	40
16	4.77	221	76.32	2.896	31943	60
16	9.38	339	150.08	2.259	38749	80
16	16.87	471	269.92	1.745	44928	Max

HQ 3*1.8 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 4800KV - HQ 3*1.8 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	1.84	104	29.44	3.533	25584	40
16	3.94	190	63.04	3.014	33676	60
16	7.77	301	124.32	2.421	41581	80
16	14.17	437	226.72	1.927	49517	Max

HQ 3*2 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 4800KV - HQ 3*2 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	2.02	116	32.32	3.589	24575	40
16	4.45	210	71.2	2.949	32460	60
16	8.7	324	139.2	2.328	39864	80
16	15.74	459	251.84	1.823	46820	Max

AVAN mini 3-inch 3-bladed propeller - 12 V

E3 1404 Brushless Motor 4800KV - AVAN mini 3-inch 3-bladed propeller - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.12	94	25.44	3.695	17466	40
12	4.63	166	55.56	2.988	23158	60
12	8.52	241	102.24	2.357	27733	80
12	15.03	327	180.36	1.813	31930	Max

GF3520 (3-blade propeller) - 12 V

E3 1404 Brushless Motor 4800KV - GF3520 (3-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.04	103	24.48	4.208	17895	40
12	4.43	185	53.16	3.48	23573	60
12	8.12	276	97.44	2.833	28389	80
12	14.26	378	171.12	2.209	33032	Max

HQ 3.5*2 (3-blade propeller) - 12 V

E3 1404 Brushless Motor 4800KV - HQ 3.5*2 (3-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.11	97	25.32	3.831	17614	40
12	4.6	175	55.2	3.17	23254	60
12	8.38	257	100.56	2.556	27996	80
12	14.6	352	175.2	2.009	32454	Max

HQ 3.5*2.5 (3-blade propeller) - 12 V

E3 1404 Brushless Motor 4800KV - HQ 3.5*2.5 (3-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.33	110	27.96	3.934	16481	40
12	5.26	203	63.12	3.216	22148	60
12	9.45	290	113.4	2.557	26302	80
12	16.17	387	194.04	1.994	30160	Max

HQ 4*2.5 (2-blade propeller) - 12 V

E3 1404 Brushless Motor 4800KV - HQ 4*2.5 (2-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.47	119	29.64	4.015	15865	40
12	5.68	219	68.16	3.213	21163	60
12	10.1	308	121.2	2.541	24933	80
12	16.89	399	202.68	1.969	28236	Max

6000KV

HQ TR2*2.2 (4-blade propeller) - 16 V

E3 1404 Brushless Motor 6000KV - HQ TR2*2.2 (4-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	2.24	90	35.84	2.511	33937	40
16	5.23	169	83.68	2.02	45435	60
16	9.56	255	152.96	1.667	55415	80
16	17.18	370	274.88	1.346	56325	Max

HQ 2.2*1.6 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 6000KV - HQ 2.2*1.6 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	2.1	100	33.6	2.976	34917	40
16	4.74	183	75.84	2.413	46741	60
16	8.63	279	138.08	2.021	57066	80
16	15.57	411	249.12	1.65	63072	Max

HQ 2.2*2 (3-blade propeller) - 16 V

E3 1404 Brushless Motor 6000KV - HQ 2.2*2 (3-blade propeller) - 16 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
16	2.59	113	41.44	2.727	31593	40
16	6.28	211	100.48	2.1	42827	60
16	11.43	314	182.88	1.717	52093	80
16	19.77	439	316.32	1.388	59523	Max

HQ 2.5*1.9 (3-blade propeller) - 12 V

E3 1404 Brushless Motor 6000KV - HQ 2.5*1.9 (3-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.28	96	27.36	3.509	24905	40
12	4.74	165	56.88	2.901	32550	60
12	8.99	254	107.88	2.354	40135	80
12	15.86	364	190.32	1.913	47749	Max

HQ 2.5*2.5 (3-blade propeller) - 12 V

E3 1404 Brushless Motor 6000KV - HQ 2.5*2.5 (3-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.71	106	32.52	3.26	22870	40
12	5.99	186	71.88	2.588	30261	60
12	11.03	275	132.36	2.078	36587	80
12	18.99	379	227.88	1.663	42951	Max

HQ 3*1.6 (3-blade propeller) - 12 V

E3 1404 Brushless Motor 6000KV - HQ 3*1.6 (3-blade propeller) - 12 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
12	2.61	114	31.32	3.64	23240	40
12	5.85	205	70.2	2.92	30463	60
12	10.97	307	131.64	2.332	36761	80
12	19.26	431	231.12	1.865	42781	Max

GF3028 (3-blade propeller) - 8.4 V

E3 1404 Brushless Motor 6000KV - GF3028 (3-blade propeller) - 8.4 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
8.4	1.86	71	15.624	4.544	17857	40
8.4	3.7	123	31.08	3.958	23407	60
8.4	6.79	185	57.036	3.244	28516	80
8.4	11.97	271	100.548	2.695	34459	Max

HQ T76 (3-blade propeller) - 8.4 V

E3 1404 Brushless Motor 6000KV - HQ T76 (3-blade propeller) - 8.4 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
8.4	2.56	87	21.504	4.046	15666	40
8.4	5.47	150	45.948	3.265	20431	60
8.4	9.65	215	81.06	2.652	24545	80
8.4	16.41	293	137.844	2.126	28698	Max

GF3520 (3-blade propeller) - 8.4 V

E3 1404 Brushless Motor 6000KV - GF3520 (3-blade propeller) - 8.4 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
8.4	2.43	89	20.412	4.36	16528	40
8.4	4.94	153	41.496	3.687	21498	60
8.4	8.89	225	74.676	3.013	25731	80
8.4	15.42	317	129.528	2.447	30121	Max

HQ 3.5*2.5 (3-blade propeller) - 8.4 V

E3 1404 Brushless Motor 6000KV - HQ 3.5*2.5 (3-blade propeller) - 8.4 V
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM	Throttle%
8.4	2.61	93	21.924	4.242	15055	40
8.4	5.82	166	48.888	3.396	19907	60
8.4	10.23	239	85.932	2.781	23701	80
8.4	17.22	321	144.648	2.219	27431	Max

APPLICATIONS

Recommended use

2-4 inch FPVlightweight freestylemicro long-range buildscompact cinematic platforms