5-inch FPV freestyle motor
EMAX E3 2207
A 5-inch racing and freestyle motor: 2207 stator, single-strand windings, N52SH magnets, 31.6 g without leads, and up to 1,800 g of pull per motor on EMAX’s 6S bench (1900KV).
- 5-inch freestyle and racing
- 6S (1700KV, 1900KV) or 4S (2400KV)
- 5 to 5.5-inch props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2207 motor drawn from EMAX’s published sizes, not its exact design. No-load speed is KV × 22.2 V, a nominal pack for this version. EMAX’s bench tables for it step by thrust rather than throttle, so they are in the bench data below, not on this readout.
- Max thrust
- 1,800 g
- EMAX AVAN 5026 prop, 25.2 V
- Weight
- 31.6 g
- without leads; 1700KV 31.9 g, 2400KV 31.5 g
- Peak current
- 40.6 A
- full throttle
- Max power
- 1,023 W
- full throttle
from $15.99a motor at EMAX USA
A set of four: $63.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $15.99
1.8 kg of pull on 6S
On EMAX’s 25.2 V bench the 1900KV pulled 1,800 g at full throttle on an EMAX AVAN 5026, drawing 40.6 A.
Source: EMAX thrust tables
4.53 g/W at 210 g
Making 210 g of thrust on 6S, the 1700KV ran at 4.53 g/W on the AVAN 5026.
Source: EMAX thrust tables
Single-strand windings
EMAX winds the E3 series with single strands, which it says lowers electrical resistance and helps the motor shed heat.
Source: EMAX USA product page
7075 aluminium, hardened steel shaft
EMAX says the E3 series uses 7075 aluminium to stand up to repeated crashes, with a hardened steel shaft, G1 bearings and N52SH arc magnets.
Source: 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 at 42 A (1700KV) and 50 A (1900KV) on 6S, and 45 A (2400KV) on 4S. On its bench the 1900KV drew 40.6 A at full throttle. A 50 A ESC covers all three. (EMAX spec sheet, EMAX thrust tables)
- Props
- EMAX lists 5 to 5.5-inch props (5-inch for the 1900KV) and tested its own AVAN 5026 three-blade: 1,600 g (1700KV) and 1,800 g (1900KV) at full throttle on 6S, 1,300 g (2400KV) on 4S. (EMAX spec sheet, EMAX thrust tables)
- Battery
- 6S for the 1700KV and 1900KV, which EMAX rates for 3S–6S and tested at 25.2 V; 4S for the 2400KV, rated for 3S–4S and tested at 16.8 V. (EMAX spec sheet, EMAX thrust tables)
- Frame
- Four M3 holes on a 16 mm circle (16 × 16 mm). (EMAX spec sheet)
Where to buy
- EMAX USAthe maker’s US store; same price for every KV (the 2400KV was listed as sold out)$14.99seen Oct 19, 2026Visit
- EMAX USA2100KV, Rainbow Limited Edition$15.99seen Oct 19, 2026Visit
- EMAXthe maker’s global store, as the ECOIII 2207; 1700KV, 1900KV and 2400KV$23.08seen Oct 19, 2026Visit
- Pyrodronechoose the KVprice on the store’s pageVisit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 1,900 rpm/V (also 1700KV, 2100KV and 2400KV) | EMAX USA product page |
| Stator | 22 × 7 mm (2207) | EMAX USA product page, EMAX spec sheet |
| Configuration | 12N14P (12 stator slots, 14 magnet poles) | EMAX spec sheet |
| Battery | 3S–6S LiPo (1700KV, 1900KV); 3S–4S (2400KV) (EMAX’s E3 infographic says the 2207 supports up to 8S; the spec sheet rates the KVs it lists as given here) | EMAX spec sheet |
| Weight | 31.6 g (without leads; 1700KV 31.9 g, 2400KV 31.5 g) | EMAX spec sheet |
| Dimensions | φ28.6 × 32.8 mm (with shaft); 26 mm from the bottom of the bell to the shaft tip | EMAX spec sheet |
| Shaft | Hardened steel, M5 thread, protrudes 12.9 mm; 4 mm through the bearings | EMAX spec sheet, EMAX USA product page |
| Mounting | 4 × M3 holes on a 16 mm circle (16 × 16 mm) | EMAX spec sheet |
| Bell | 7075 aluminium | EMAX USA product page |
| Magnets | N52SH arc magnets | EMAX USA product page |
| Bearings | G1 bearings (EMAX’s E3 infographic; it gives no size) | EMAX USA product page |
| Winding | Single-strand | EMAX USA product page |
| Internal resistance | 64 mΩ (1700KV 74 mΩ, 2400KV 48 mΩ) | EMAX spec sheet |
| Idle current | 1.5 A (at 10 V; 1700KV 1.2 A, 2400KV 2.1 A) | EMAX spec sheet |
| Peak current | 50 A (on 6S; 1700KV 42 A on 6S, 2400KV 45 A on 4S) | EMAX spec sheet |
| Max power | 1,260 W (on 6S; 1700KV 1050 W on 6S, 2400KV 750 W on 4S) | EMAX spec sheet |
| Leads | 20 AWG, 120 mm | EMAX spec sheet |
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.
1700KV on 6S, 25.2 V1 prop
| Prop | Step | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| EMAX AVAN 5026 (3-blade) | 1.84 | 210 | 46.37 | 4.53 | |
| 3.62 | 350 | 91.22 | 3.84 | ||
| 6.1 | 530 | 153.72 | 3.45 | ||
| 9.42 | 720 | 237.38 | 3.03 | ||
| 13.6 | 940 | 342.72 | 2.74 | ||
| 18.9 | 1,150 | 476.28 | 2.41 | ||
| 24.4 | 1,340 | 614.88 | 2.18 | ||
| Max | 31.4 | 1,600 | 791.28 | 2.02 |
Source: EMAX thrust tables
1900KV on 6S, 25.2 V1 prop
| Prop | Step | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| EMAX AVAN 5026 (3-blade) | 2.45 | 250 | 61.74 | 4.05 | |
| 4.82 | 430 | 121.46 | 3.54 | ||
| 8.13 | 620 | 204.88 | 3.03 | ||
| 12.2 | 850 | 307.44 | 2.76 | ||
| 18.1 | 1,090 | 456.12 | 2.39 | ||
| 24.2 | 1,300 | 609.84 | 2.13 | ||
| 30.7 | 1,500 | 773.64 | 1.94 | ||
| Max | 40.6 | 1,800 | 1023.12 | 1.76 |
Source: EMAX thrust tables
2400KV on 4S, 16.8 V1 prop
| Prop | Step | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| EMAX AVAN 5026 (3-blade) | 2.31 | 180 | 38.81 | 4.64 | |
| 4.47 | 300 | 75.1 | 3.99 | ||
| 7.3 | 440 | 122.64 | 3.59 | ||
| 11.1 | 600 | 186.48 | 3.22 | ||
| 15.8 | 760 | 265.44 | 2.86 | ||
| 21.5 | 930 | 361.2 | 2.57 | ||
| 28.1 | 1,100 | 472.08 | 2.33 | ||
| Max | 35.8 | 1,300 | 601.44 | 2.16 |
Source: EMAX thrust tables
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Shaft. Hardened steel, M5 thread, protrudes 12.9 mm; 4 mm through the bearings. (EMAX spec sheet, EMAX USA product page)
- Bell. 7075 aluminium. (EMAX USA product page)
- Magnets. N52SH arc magnets. (EMAX USA product page)
- Stator. The coils are wound on a stack of thin steel laminations: 22 × 7 mm (2207). (EMAX USA product page, EMAX spec sheet)
- Winding. Single-strand. (EMAX USA product page)
- Bearings. G1 bearings (EMAX’s E3 infographic; it gives no size). (EMAX USA product page)
- Base. 4 × M3 holes on a 16 mm circle (16 × 16 mm). (EMAX spec sheet)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1900KV 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.
| Battery | Volts | No-load rpm (KV × V) | Electrical frequency | ESC steps per second |
|---|---|---|---|---|
| 4S nominal | 14.8 | 28,120 | 3,281 Hz | 19,684 |
| 4S full | 16.8 | 31,920 | 3,724 Hz | 22,344 |
| 6S nominal | 22.2 | 42,180 | 4,921 Hz | 29,526 |
| 6S full | 25.2 | 47,880 | 5,586 Hz | 33,516 |
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 22 × 7 mm stator, 28.6 mm bell, 19.9 mm height, 5 mm shaft, 16 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
- EMAX USA: E3 Series 2207 Brushless Motor (product page, with its spec table and EMAX’s E3 infographics). Retrieved Oct 19, 2026.
- EMAX: ECOIII series 2207 1700KV 1900KV 2400KV (product page on EMAX’s global store). Retrieved Oct 19, 2026.
- EMAX: ECOIII-2207 spec sheet (dimension drawing and spec table for each KV; image on EMAX’s product page). Retrieved Oct 19, 2026.
- EMAX: ECOIII-2207 thrust tables, 1700KV and 1900KV at 25.2 V, 2400KV at 16.8 V, on EMAX’s AVAN 5026 three-blade (image on EMAX’s product page). Steps of thrust, then “Max” at full throttle; EMAX’s rpm column is left out because it has no figure at full throttle.. Retrieved Oct 19, 2026.
- EMAX USA: E3 Series 2207 2100kv Rainbow Limited Edition Brushless Motor (product page). Retrieved Oct 19, 2026.
