BrotherHobby Avenger 2812 V3

What it pulls

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

What you get for $32.99

• 3.5 kg on a 9-inch two-blade

  On BrotherHobby’s 2020 bench at 24 V the 1115KV pulled 3,520 g at full throttle on a 9 × 4.7 carbon two-blade, drawing 54.5 A.

  Source: BrotherHobby 2020 load tests, BrotherHobby thrust summary

• 3.3 kg on a 9-inch tri-blade

  At 25.2 V the 1115KV pulled 3,307 g on an HQ 9 × 5 × 3 at 66.8 A; the 900KV pulled 3,021 g at 45.1 A.

  Source: BrotherHobby 1115KV 9-inch test report, BrotherHobby 900KV 9-inch test report

• Hard-anodised 7075

  Bell cap and base in 7075 aluminium with a hard-anodised finish, which BrotherHobby says takes light scrapes without marking.

  Source: BrotherHobby product page, BrotherHobby infographic

• NMB bearings

  Japanese NMB 12 × 6 × 4 mm bearings, which BrotherHobby says run smooth and quiet.

  Source: BrotherHobby product page, BrotherHobby infographic

• Balanced to 3 mg

  The 2022 test reports give a dynamic-balance standard of 3 mg or less and a passed coil test.

  Source: BrotherHobby 900KV 8-inch test report, BrotherHobby 900KV 9-inch test report, BrotherHobby 1115KV 8-inch test report, BrotherHobby 1115KV 9-inch test report

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 1115KV on an 8-inch tri-blade and 6S 80 A on a 9-inch (full-throttle peaks of 57.3 A and 66.8 A); for the 900KV, 6S 40 A and 50 A (35.9 A and 45.1 A). (BrotherHobby 900KV 8-inch test report, BrotherHobby 900KV 9-inch test report, BrotherHobby 1115KV 8-inch test report, BrotherHobby 1115KV 9-inch test report)

Props

BrotherHobby tested HQ 8 × 4.5 × 3 and 9 × 5 × 3 tri-blades and a 9 × 4.7 carbon two-blade. At full throttle the 1115KV pulled 3,076 g, 3,307 g and 3,520 g on them; the 900KV 2,406 g, 3,021 g and 2,750 g. (BrotherHobby 2020 load tests, BrotherHobby 900KV 8-inch test report, BrotherHobby 900KV 9-inch test report, BrotherHobby 1115KV 8-inch test report, BrotherHobby 1115KV 9-inch test report)

Battery

6S for both KVs in BrotherHobby’s tests; the spec list gives 5S–8S. (BrotherHobby product page, BrotherHobby 900KV 8-inch test report, BrotherHobby 1115KV 8-inch test report)

Frame

Four M3 holes on a 19 mm circle (19 × 19 mm); the shaft takes an M5 nut, which comes in the box. (BrotherHobby product page, BrotherHobby spec and drawing, BrotherHobby 2020 load tests)

Where to buy

• BrotherHobbythe maker’s store; $32.99 for either KV once one is chosen (the page opens at $33.99)
  $32.99seen Oct 19, 2026
  Visit
• RaceDayQuads1115KV
  price on the store’s page
  Visit
• Pyrodronechoose the KV
  price on the store’s page
  Visit
• GetFPV900KV or 1115KV
  price on the store’s page
  Visit

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

Full specs

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.

Inside the motor

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

• Bell. 7075 aluminium bell cap, φ33.9 mm, hard anodised, with five spokes round a textured hub. (BrotherHobby product page, BrotherHobby infographic, BrotherHobby spec and drawing)
• Shaft. 5 mm with an M5 thread, standing 16 mm above the bell. The spec list calls it a hollow titanium-alloy shaft; an infographic on the same page calls it heat-treated alloy steel. (BrotherHobby product page, BrotherHobby infographic, BrotherHobby spec and drawing)
• Magnets. N52H arc magnets, 14 poles. (BrotherHobby product page)
• Stator. 28 × 12 mm with 12 slots, in 0.2 mm Kawasaki silicon steel. (BrotherHobby product page, BrotherHobby 1115KV 8-inch test report)
• Bearings. NMB, 12 × 6 × 4 mm. (BrotherHobby product page)
• Base. 7075 aluminium, with four M3 holes on a 19 mm circle and 18 AWG leads 250 mm long. (BrotherHobby product page, BrotherHobby spec and drawing)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1115KV 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 BrotherHobby’s published sizes: the 28 × 12 mm stator, 33.9 mm bell, 26 mm height, 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: Avenger 2812 V3 Motor (CW) (product page on BrotherHobby’s store, with its spec list, photos and Test data tab). Retrieved Oct 19, 2026.
2. BrotherHobby: Avenger 2812 V3 full-throttle summary for both KVs, with the ESC for each (image on the product page). It names the prop 9.4 × 4.7; the load-test tables say 9.0 × 4.7.. Retrieved Oct 19, 2026.
3. BrotherHobby: Avenger 2812 V3 features, bell, shaft and bearings (image on the product page). Retrieved Oct 19, 2026.
4. BrotherHobby: Avenger 2812 V3 load test data, 2020 bench (900KV and 1115KV at 24 V on a 9 × 4.7 carbon two-blade), with the packing list (image on the product page). Retrieved Oct 19, 2026.
5. BrotherHobby: Avenger 2812 V3 spec list and dimension drawing (image on the product page). Retrieved Oct 19, 2026.
6. BrotherHobby: Avenger V3 2812 900KV test report on 6S with an HQ 8 × 4.5 × 3, 2022 bench (image on the Test data tab). Retrieved Oct 19, 2026.
7. BrotherHobby: Avenger V3 2812 900KV test report on 6S with an HQ 9 × 5 × 3, 2022 bench (image on the Test data tab). Retrieved Oct 19, 2026.
8. BrotherHobby: Avenger V3 2812 1115KV test report on 6S with an HQ 8 × 4.5 × 3, 2022 bench (image on the Test data tab). Retrieved Oct 19, 2026.
9. BrotherHobby: Avenger V3 2812 1115KV test report on 6S with an HQ 9 × 5 × 3, 2022 bench (image on the Test data tab). Retrieved Oct 19, 2026.