EMAX E3 2814

What you get for $58.50

• 4 kg on 6S

  On EMAX’s 25 V bench the 1100KV pulled 4,080 g at full throttle on a GF9045 three-blade, drawing 75.8 A; the 850KV pulled 3,940 g on a 10-inch GF1050 at 58.4 A.

  Source: EMAX spec sheet and bench tables

• 7.19 g/W at 545 g

  Making 545 g on the 10-inch GF1050 at 25 V, the 850KV ran at 7.19 g/W, drawing 3.03 A.

  Source: EMAX spec sheet and bench tables

• Single-strand windings

  EMAX winds the E3 with single strands of copper, which it says supports efficient current flow under heavy load.

  Source: EMAX USA product page

• 7075 aluminium, G1 bearings

  An anodised 7075 aluminium housing, a steel shaft on a 5 mm bearing shaft and G1-grade precision bearings.

  Source: EMAX spec sheet and bench tables, EMAX USA product page

What to pair it with

Our reading of EMAX’s numbers, so your build matches what the motor was tested with.

ESC

EMAX rates the peak current on 6S at 58.4 A (850KV) and 75.8 A (1100KV), the figures its bench tests reached on the GF1050 and GF9045. A 60 A ESC covers the 850KV and an 80 A ESC the 1100KV. (EMAX spec sheet and bench tables)

Props

9 to 10-inch for the 850KV and 8 to 9-inch for the 1100KV. EMAX tested the 850KV on GF9045, HQ 9050 and GF1050 props and the 1100KV on GF8040, GF8060 and GF9045. (EMAX spec sheet and bench tables)

Battery

6S: EMAX rates both KVs for 3S–6S, gives their peak figures on 6S and tested them at 25 V. (EMAX spec sheet and bench tables)

Frame

Four M3 holes on a 19 mm circle (19 × 19 mm); five M3×10 screws come in the box. (EMAX spec sheet and bench tables)

Where to buy

• EMAX USAthe maker’s US store; same price for both KVs (both were listed as sold out)
  $37.99seen Oct 19, 2026
  Visit
• EMAXthe maker’s global store; 850KV and 1100KV
  $58.50seen Oct 19, 2026
  Visit

Plain links, not affiliate links. Prices change; the store’s page has the current one.

Full specs

Bench data

Redrawn from EMAX’s test reports. Thrust is static pull on a bench, more than you get in flight. Power is volts × amps; efficiency is thrust divided by power.

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

• Shaft. Steel, M5 thread (CW), stands 17.5 mm above the bell; 5 mm through the bearings. (EMAX spec sheet and bench tables)
• Bell. 7075 aluminium, anodised. (EMAX spec sheet and bench tables)
• Stator. The coils are wound on a stack of thin steel laminations: 28 × 14 mm (2814). (EMAX USA product page, EMAX spec sheet and bench tables)
• Winding. Single-strand copper. (EMAX spec sheet and bench tables, EMAX USA product page)
• Bearings. G1-grade precision rolling bearings. (EMAX spec sheet and bench tables, EMAX USA product page)
• Base. 4 × M3 holes on a 19 mm circle (19 × 19 mm). (EMAX spec sheet and bench tables)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1100KV version reaches about these speeds; a prop loads the motor and brings it down, typically to around 70–75% of these figures at full throttle.

A 14-pole rotor has 7 pole pairs, so every turn of the shaft is 7 electrical cycles, and a six-step ESC switches the phases 42 times per turn.

About the 3D model

A generic outrunner drawn from EMAX’s published sizes: the 28 × 14 mm stator, 35.1 mm bell, 28 mm height, 5 mm shaft, 19 mm mounting circle and 12 teeth and 14 magnets. Anything EMAX doesn’t publish is typical for a motor this size, and the bell’s spoked top, the base and the inside are a generic design, not this motor’s. The colours are read off the maker’s product photos. There are no logos or markings: it is our drawing, not the maker’s.

Sources

1. EMAX USA: EMAX E3 2814 Brushless Motor (product page, with its spec and per-KV electrical tables, each KV’s best full-throttle bench result and EMAX’s E3 infographics). Retrieved Oct 19, 2026.
2. EMAX: E3 2814 850KV 1100KV brushless motor (product page on EMAX’s global store). Retrieved Oct 19, 2026.
3. EMAX: E3-2814 motor specifications V1.0 (image on EMAX’s global product page): dimension drawing, spec table for each KV, feature list and bench tables at 25 V on three props per KV, in steps of rising thrust ending at “Max”, full throttle. EMAX’s rpm column is left out because it has no figure at full throttle.. Retrieved Oct 19, 2026.