EMAX E3 Series 2807

EMAX E3 Series 2807
Image: racedayquads.com
Stator2807
KV options1300, 1500, 1700
Weight49.6 g (1300KV, cable excluded)
ShaftM5
Max cells3-6S (1300/1500KV) / 3-4S (1700KV)
Configuration12N14P
Dimensions34.8x34.9 mm
Mount (bolt circle, mm)Ø19 (4-M3)
Winding resistance60 (1300KV) / 50 (1500KV) / 40 (1700KV) mOhm
Max thrust2580 g
Price (approx.)23.99 USD

At 49.6 g it is right at the class average across the 5 2807-class motors in our database (avg 48.4 g).

Best props for the E3 Series 2807

6"-7"

Thrust data (EMAX bench test)

KVPropBatteryThrottleCurrentRPMThrustEfficiency
1300 EMAX AVIA 7035-3 6S — 2.06 A 9050 300 g 5.78 g/W
1300 EMAX AVIA 7035-3 6S — 3.91 A 11640 500 g 5.07 g/W
1300 EMAX AVIA 7035-3 6S — 6.46 A 14050 730 g 4.48 g/W
1300 EMAX AVIA 7035-3 6S — 9.92 A 16560 1050 g 4.2 g/W
1300 EMAX AVIA 7035-3 6S — 14.2 A 18980 1320 g 3.69 g/W
1300 EMAX AVIA 7035-3 6S — 19.1 A 21060 1610 g 3.34 g/W
1300 EMAX AVIA 7035-3 6S — 25.2 A 23180 1950 g 3.07 g/W
1300 EMAX AVIA 7035-3 6S 100% 32.4 A — 2290 g 2.8 g/W
1500 EMAX AVIA 7040-3 6S — 2.66 A 10380 340 g 5.07 g/W
1500 EMAX AVIA 7040-3 6S — 5.2 A 13290 590 g 4.5 g/W
1500 EMAX AVIA 7040-3 6S — 8.75 A 15970 870 g 3.95 g/W
1500 EMAX AVIA 7040-3 6S — 13.7 A 18590 1230 g 3.56 g/W
1500 EMAX AVIA 7040-3 6S — 20.2 A 20950 1595 g 3.13 g/W
1500 EMAX AVIA 7040-3 6S — 28.5 A 23060 1990 g 2.77 g/W
1500 EMAX AVIA 7040-3 6S — 38.1 A 24960 2270 g 2.36 g/W
1500 EMAX AVIA 7040-3 6S 100% 51.3 A — 2580 g 2.0 g/W
1700 EMAX AVIA 7035-3 4S — 2.2 A 7890 225 g 6.09 g/W
1700 EMAX AVIA 7035-3 4S — 4.23 A 10240 380 g 5.35 g/W
1700 EMAX AVIA 7035-3 4S — 6.84 A 12290 560 g 4.87 g/W
1700 EMAX AVIA 7035-3 4S — 10.2 A 14280 750 g 4.38 g/W
1700 EMAX AVIA 7035-3 4S — 14.6 A 16360 980 g 4.0 g/W
1700 EMAX AVIA 7035-3 4S — 20.1 A 18340 1230 g 3.64 g/W
1700 EMAX AVIA 7035-3 4S — 26.2 A 20120 1480 g 3.36 g/W
1700 EMAX AVIA 7035-3 4S 100% 33.4 A — 1760 g 3.14 g/W

Manufacturer bench figures (6S, EMAX AVIA 7040-3, 100% throttle, 1500KV; manufacturer payload test, 8 load points per KV; 1700KV tested on 4S); real-world thrust varies with ESC, battery sag and prop condition.

E3 Series 2807 vs other 2807 motors on 6S

The same thrust costs different power on different motors. Each line is one maker's own bench series (6S, its own prop), drawn as grams of thrust per watt against thrust, so a higher line makes that thrust for less battery current. Throttle percent is left out on purpose: it means something different on every maker's rig.

01234505001000150020002500 thrust, g g/W
MotorKVPropPeak thrust At 1000 gAt 2000 g
EMAX E3 Series 2807 1500 EMAX AVIA 7040-3 2580 g at 1293 W 266 W (3.77 g/W) 727 W (2.75 g/W)
Flash Hobby Arthur 2807 1300 GF 7*3.5*3 2036 g at 908 W 322 W (3.1 g/W) 875 W (2.29 g/W)

Power at 1000 g and 2000 g is read off each maker's curve, straight-line between its two nearest bench points; 2000 g is the highest thrust every motor here reached. Different props and rigs move these curves as much as the motor does, so compare rows on a similar prop. Peak thrust of every 2807 motor: 2807 motors compared. How to read a bench table: reading motor bench tables.

Thrust-to-weight with this motor

Four EMAX E3 Series 2807 motors at 2580 g max thrust each give 10320 g: 2:1, the minimum to fly, up to 5160 g all-up; 4:1 (freestyle) up to 2580 g; 8:1 (racing) up to 1290 g.

RPM & prop speed on this motor

Props in this motor's class

PropSizeBladesWeight
Gemfan Hurricane LR 6026-2 6.0x2.6 2 3.0 g
Gemfan Freestyle 6030 6.0x3.0 3 4.45 g
HQProp 6x4.3x2 6.0x4.3 2 4.7 g
Gemfan Flash 6042 6.0x4.2 2 4.82 g
APC 7x4 SF-B4 2-Blade 7.0x4.0 2 5.1 g

Where this data comes from

Weight, body, winding, cell rating and resistance from EMAX's own Specifications sheet (ECO-111-20250308---__12.jpg) on the maker's ECO III product page, read at full size 2026-10-20 (EMAX sells the E3 series as ECO III, the same motor): one block per winding, each 12N14P, Φ34.8*34.9mm, 5 mm bearing shaft, 18#AWG 200 mm lead, internal resistance 60 / 50 / 40 mΩ (1300/1500/1700 KV), weight 49.6 g at every winding, every one printed "(W/O Silicone Wire)"; the retail listing repeats the same figures "without silicone wire". EMAX prints no weight with the cable, so weight_g keeps the maker's first-listed winding's figure, named on the page as cable excluded. No. of cells per winding as printed: 3-6S at 1300 and 1500 KV, 3-4S at 1700 KV. The drawing gives a Φ19 4-M3 bolt circle (mount_bolt_circle_mm) and an M5 prop thread; the listing's "Mounting Pattern: 19x19mm" is not a square pattern on EMAX's drawing, so mount_mm is not published.

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