Drone Motors

7-inch FPV motor

BrotherHobby SE 2810

A 7-inch motor for 6S: 28 × 10 mm stator, 67.2 g with leads, and up to 2,471 g of pull per motor on a 7-inch tri-blade on BrotherHobby’s bench (1350KV).

  • 7-inch builds
  • 6S
  • 7-inch tri-blade props
Drawing the 3D model…

The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2810 motor drawn from BrotherHobby’s published sizes, not its exact design. Thrust, current and power are BrotherHobby’s bench figures for the HQ 7 × 4 × 3 prop at 24 V, read straight across between its throttle steps. Its data starts at 30% throttle.

Version

Tested on 24 V with an HQ 7 × 4 × 3 tri-blade; BrotherHobby lists a 6S 45 A ESC.

Max thrust
2,436 g
HQ 7 × 4 × 3 prop, 24 V
Weight
67.2 g
with 250 mm leads; the test reports give 68.1 g (1180KV) and 67.2 g (1350KV)
Peak current
39.2 A
full throttle
Max power
941 W
full throttle

from $19.50a motor at BrotherHobby

A set of four: $78.00

Price seen Oct 19, 2026. Plain links: we earn nothing from them.

What it pulls

BrotherHobby’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.

01,0002,0003,00030%40%50%60%70%80%90%100%gthrottle2,436 gHQ 7 × 4 × 3

At 60% with the HQ 7 × 4 × 3: 1,004 g of thrust, 9.0 A, 216 W, 4.65 g per watt.

On your quad

15.0 : 1

Thrust to weight at full throttle: four motors pull 9,744 g with the HQ 7 × 4 × 3 at 24 V.

At 60% throttle they pull 4,016 g, 6.2 times the quad’s weight.

All-up weight is the quad ready to fly, with its battery and camera. The thrust is the maker’s static bench figure; in the air it is lower.

What you get for $19.50

What to pair it with

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

ESC
BrotherHobby lists a 6S 60 A ESC for the 1350KV and 6S 45 A for the 1180KV; full-throttle peaks were 57.2 A and 39.2 A. (BrotherHobby 1350KV test report, BrotherHobby 1180KV test report)
Props
BrotherHobby pairs it with 7-inch props: 2,471 g at full throttle on an HQ 7 × 3.5 × 3 (1350KV) and 2,436 g on an HQ 7 × 4 × 3 (1180KV). (BrotherHobby prop image, BrotherHobby 1350KV test report, BrotherHobby 1180KV test report)
Frame
Four M3 holes on a 19 mm circle (19 × 19 mm); four M3 × 8 screws and an M5 flange nut come in the box. (BrotherHobby product page, BrotherHobby infographic and drawing, BrotherHobby packing list)

Where to buy

  • BrotherHobbythe maker’s store; same price for both KVs
    $19.50seen Oct 19, 2026
    Visit

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

Full specs

SpecValueSource
KV1,180 rpm/V (also 1350KV)BrotherHobby product page
Stator28 × 10 mm (2810); 0.2 mm Kawasaki 1200 silicon-steel laminationsBrotherHobby 1350KV test report, BrotherHobby 1180KV test report, BrotherHobby product page
Configuration12N14P (12 stator slots, 14 magnet poles)BrotherHobby product page, BrotherHobby 1350KV test report
Battery6S LiPoBrotherHobby product page, BrotherHobby 1350KV test report
Weight67.2 g (with 250 mm leads; the test reports give 68.1 g (1180KV) and 67.2 g (1350KV))BrotherHobby product page, BrotherHobby thrust summary, BrotherHobby 1350KV test report, BrotherHobby 1180KV test report
Dimensionsφ33.3 × 39 mm (with shaft)BrotherHobby infographic and drawing, BrotherHobby 1350KV test report, BrotherHobby 1180KV test report
ShaftSUS420 heat-treated steel, 5 mm, M5 thread (10 mm of thread)BrotherHobby product page, BrotherHobby infographic and drawing
Mounting4 × M3 holes on a 19 mm circle (19 × 19 mm)BrotherHobby product page, BrotherHobby infographic and drawing
Bell7075 aluminium bell cap and base casing, hard anodisedBrotherHobby product page, BrotherHobby infographic and drawing
MagnetsN52H arc magnetsBrotherHobby product page, BrotherHobby infographic and drawing
BearingsNMB (Japan), 12 × 6 × 4 mmBrotherHobby product page
WindingTU1-grade enamelled wireBrotherHobby infographic and drawing
Internal resistance63.6 mΩ (1350KV 49 mΩ)BrotherHobby 1180KV test report
Idle current1.03 A (at 10 V; 1350KV 1.82 A)BrotherHobby 1180KV test report
Max current39.2 A (full throttle on an HQ 7 × 4 × 3 at 24 V; 1350KV 57.2 A on an HQ 7 × 3.5 × 3 at 24.8 V)BrotherHobby 1180KV test report, BrotherHobby 1350KV test report, BrotherHobby thrust summary
Max power940.8 W (1350KV 1418.56 W)BrotherHobby 1180KV test report, BrotherHobby 1350KV test report, BrotherHobby thrust summary
Leads18 AWG, 250 mmBrotherHobby product page, BrotherHobby 1350KV test report, BrotherHobby 1180KV test report
In the box4 × M3 × 8 screws, 1 × M5 flange nutBrotherHobby packing list

Bench data

Redrawn from BrotherHobby’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.

1180KV on 6S, 24 V1 prop

PropThrottleVoltage (V)Current (A)RPMThrust (g)Power (W)Efficiency (g/W)
HQ 7 × 4 × 3 (7-inch, three blades)motor at 76 °C30%2427812326486.79
40%243.1944047274.46.34
50%245110676601205.5
60%249133871,0042164.65
70%2415154201,3863603.85
80%2423.8177561,862571.23.26
90%2432194102,2577682.94
100%2439.2198802,436940.82.59

Source: BrotherHobby 1180KV test report

1350KV on 6S, 25.2 V1 prop

PropThrottleVoltage (V)Current (A)RPMThrust (g)Power (W)Efficiency (g/W)
HQ 7 × 3.5 × 3 (7-inch, three blades)motor at 95 °C30%25.23.4955040185.684.68
40%25.2712367696176.43.95
50%25.212.1145241,061304.923.48
60%25.216.1167921,335405.723.29
70%25.125188611,718627.52.74
80%2531.5207802,021787.52.57
90%24.945.8218272,0971140.421.84
100%24.857.2224392,4711418.561.74

Source: BrotherHobby 1350KV test report

Inside the motor

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

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1180KV 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.

BatteryVoltsNo-load rpm (KV × V)Electrical frequencyESC steps per second
4S nominal14.817,4642,037 Hz12,225
4S full16.819,8242,313 Hz13,877
6S nominal22.226,1963,056 Hz18,337
6S full25.229,7363,469 Hz20,815

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 BrotherHobby’s published sizes: the 28 × 10 mm stator, 33.3 mm bell, 5 mm shaft, 19 mm mounting circle and 12 teeth and 14 magnets. Anything BrotherHobby 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. BrotherHobby: SE 2810 1180KV Motor (CW) (product page on BrotherHobby’s store, with its spec list, photos and Test Data tab; it sells 1180KV and 1350KV). Retrieved Oct 19, 2026.
  2. BrotherHobby: SE 2810 weight, maximum thrust and 1350KV full-throttle summary, with the ESC (image on the product page). Retrieved Oct 19, 2026.
  3. BrotherHobby: SE 2810 “paired with 7 inch prop” (image on the product page). Retrieved Oct 19, 2026.
  4. BrotherHobby: SE 2810 exploded view (shaft, caps, magnets, bearings, wire, stator steel) and dimension drawing (image on the product page). Retrieved Oct 19, 2026.
  5. BrotherHobby: SE 2810 packing list (image on the product page). Retrieved Oct 19, 2026.
  6. BrotherHobby: SE 2810-1350KV test report on 6S with an HQ 7 × 3.5 × 3, 2022 bench, with drawing and spec table (image on the Test Data tab). The copper temperature is after two minutes at full throttle.. Retrieved Oct 19, 2026.
  7. BrotherHobby: SE 2810-1180KV test report on 24 V with an HQ 7 × 4 × 3, 2022 bench, with drawing and spec table (image on the Test Data tab). Retrieved Oct 19, 2026.