E3 Series / 28XX / E3 Series

E3 2812 Brushless Motor

A durable high-power 2812 brushless motor for 7-9 inch long-range and high-load FPV platforms, available in 920KV and 1150KV for 3-6S systems.

920KV1150KV

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KEY FEATURES

Designed for FPV performance tuning

A rugged steel shaft and AL 7075 anodized housing resist deformation and help preserve alignment after impact.
N52SH arc magnets, a one-piece outer rotor, and single-strand winding maintain torque while controlling heat under sustained load.
Precision bearings reduce high-speed noise and vibration for reliable operation with 7-9 inch propellers.
Verified HTML load-test data covers 920KV and 1150KV configurations across five propeller combinations.

SPECIFICATIONS

Product snapshot

Stator Size: 2812
Series: E3 Series
KV Options: 920KV, 1150KV
Motor Dimensions: 34.9 x 43.5 mm
Framework: 12N14P
Battery: 3-6S
Propeller: 7-9 inch
Weight: 72 g without silicone wire
Bearing Shaft: 5 mm
Prop Adapter Shaft Thread: M5
Shaft Thread: CW
Mounting Pattern: 19 x 19 mm, M3
Lead: 250 mm 18 AWG silicone wire

VARIANT SPECIFICATIONS

KV configuration matrix

KV	Battery cells	Propeller	Idle current	Internal resistance	Peak current	Maximum power
920KV	3-6S	7-9 inch	1.3 A @ 10 V	66 mOhm	57 A @ 6S	1425 W @ 6S
1150KV	3-6S	7-8 inch	1.6 A @ 10 V	48 mOhm	68 A @ 6S	1700 W @ 6S

ENGINEERING AND PERFORMANCE

Built for high power that lasts

Every critical component is engineered to maintain performance under heat, high RPM and impact, giving 7-9 inch FPV aircraft dependable power throughout demanding flights.

Built robust

Resists crash-induced damage to help preserve motor alignment and consistent output.

Withstands heat

Reduces heat-related power fading during sustained high-RPM and heavy-load operation.

Rapid response

Minimizes throttle lag while maintaining the low-end torque demanded by large propellers.

Critical component construction

Rugged steel shaft

Resists bending to reduce vibration and rotor contact after hard impacts.

AL 7075 anodized housing

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

One-piece outer rotor

Secures the magnets firmly to reduce jitter and power loss under impact.

N52SH arc magnets

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

Single-strand winding

Lowers internal resistance and helps control excess heat under heavy load.

Precision bearing

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

Choose the E3 2812 KV for your aircraft

920KV

Efficiency and long range

3-6S power for 7-9 inch long-range, cinematic and endurance-focused FPV aircraft.

1150KV

Responsive high-load power

3-6S power for responsive 7-8 inch high-load, exploration and specialty FPV builds.

High performance with accessibility

The E3 Series combines optimized materials and manufacturing with durable power and efficiency for demanding FPV aircraft.

A reliable platform for modern FPV

Engineered for demanding conditions while maintaining sustained output for long-range, high-load and professional FPV applications.

OFFICIAL GRAPHICS

Engineering drawing and specifications

E3 2812 Brushless Motor engineering drawing 1

E3 2812 Brushless Motor technical specifications
SPECIFICATIONS
Framework	12N14P
Length	43.5 mm
Diameter	34.9 mm
Battery cells - 920KV	3-6S
Battery cells - 1150KV	3-6S
Recommended propeller	7-9 inch
Weight (without silicone wire)	72 g
Prop adapter shaft thread	M5
Bearing shaft	5 mm
Shaft thread	CW
FEATURES
G1-level rolling-element precision bearing
Steel shaft
AL 7075 anodized housing
19 x 19 mm M3 mounting-hole pattern
Single-strand winding
250 mm 18 AWG silicone wire
PACKAGE INCLUDES
5 x M3 x 9 screws
1 x aluminum M5 nyloc nut
1 x washer and screw for shaft

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.

920KV

GF 9 x 4.5, 3-blade

E3 2812 Brushless Motor 920KV - GF 9 x 4.5, 3-blade
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM
25	2.62	415	65.5	6.34	5890
25	5.25	724	131.25	5.52	7572
25	9.12	1083	228	4.75	9138
25	14.3	1465	357.5	4.1	10609
25	20.7	1870	517.5	3.61	11904
25	27.5	2250	687.5	3.27	13092
25	36.2	2640	905	2.92	14148
25	48.7	3250	1217.5	2.67	Max

HQ 9 x 5, 3-blade

E3 2812 Brushless Motor 920KV - HQ 9 x 5, 3-blade
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM
25	3.03	500	75.75	6.6	5746
25	6.2	853	155	5.5	7349
25	10.7	1230	267.5	4.6	8802
25	16.9	1640	422.5	3.88	10134
25	23.5	2045	587.5	3.48	11290
25	32.2	2440	805	3.03	12336
25	41.8	2832	1045	2.71	13165
25	56.7	3480	1417.5	2.46	Max

1150KV

HQ 7 x 4, 3-blade

E3 2812 Brushless Motor 1150KV - HQ 7 x 4, 3-blade
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM
25	2.57	312	64.25	4.86	7745
25	5.06	550	126.5	4.35	10010
25	8.57	822	214.25	3.84	12013
25	13.2	1120	330	3.39	13906
25	19.4	1475	485	3.04	15842
25	27.5	1900	687.5	2.76	17545
25	36.3	2280	907.5	2.51	19110
25	46.9	2710	1172.5	2.31	Max

GF 8 x 4, 3-blade

E3 2812 Brushless Motor 1150KV - GF 8 x 4, 3-blade
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM
25	3.3	480	82.5	5.82	7468
25	6.42	802	160.5	5	9495
25	11.1	1170	277.5	4.22	11447
25	17.1	1572	427.5	3.68	13158
25	24.7	2010	617.5	3.26	14796
25	33.6	2460	840	2.93	16370
25	44.2	2874	1105	2.6	17732
25	58.8	3540	1470	2.41	Max

GF 8 x 6, 3-blade

E3 2812 Brushless Motor 1150KV - GF 8 x 6, 3-blade
VoltageV	CurrentA	Thrustg	PowerW	Efficiencyg/W	SpeedRPM
25	3.85	542	96.25	5.63	7146
25	7.66	886	191.5	4.63	9144
25	13.1	1280	327.5	3.91	10992
25	20.2	1695	505	3.36	12640
25	28.5	2110	712.5	2.96	14065
25	38.6	2548	965	2.64	15405
25	49.9	2963	1247.5	2.38	16578
25	67.3	3610	1682.5	2.15	Max

APPLICATIONS

Recommended use

7-9 inch long-range FPVlarge FPVhigh-load FPV platformscinematic and exploration dronesspecialty builds