BrotherHobby Avenger 2207.5 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 $22.99

• About 2 kg of pull on 6S

  On BrotherHobby’s 24 V bench the 1900KV pulled 2,042 g at full throttle on an HQ 5.1 × 4.1 × 3, drawing 48.9 A.

  Source: BrotherHobby load tests, BrotherHobby 1900KV test report

• Wire rated to 260 °C

  BrotherHobby rates the winding wire to 260 °C, with DuPont high-temperature enamel, and says it takes long runs at full throttle.

  Source: BrotherHobby spec and drawing, BrotherHobby infographic

• 0.15 mm silicon steel

  Stator laminations of 0.15 mm Nippon Steel silicon steel, which BrotherHobby says keep eddy-current losses and heating low.

  Source: BrotherHobby product page, BrotherHobby infographic

• NMB bearings, 7075 shell

  Japanese NMB 9 × 4 × 4 mm bearings in a hard-anodised 7075 aluminium bell and base.

  Source: BrotherHobby product page, BrotherHobby infographic

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 45 A ESC for the 1750KV, 6S 50 A for the 1900KV and 5S 55 A for the 2350KV; their full-throttle peaks were 41.2 A, 48.9 A and 51.6 A. (BrotherHobby thrust summary, BrotherHobby 1750KV test report, BrotherHobby 1900KV test report, BrotherHobby 2350KV test report)

Props

All three KVs were tested on an HQ 5.1 × 4.1 × 3: 1,798 g (1750KV) and 2,042 g (1900KV) at full throttle on 24 V, and 1,920 g (2350KV) on 20 V. (BrotherHobby load tests)

Battery

6S for the 1750KV and 1900KV and 5S for the 2350KV in BrotherHobby’s tests; the spec list gives 5S–6S. (BrotherHobby product page, BrotherHobby 1750KV test report, BrotherHobby 1900KV test report, BrotherHobby 2350KV test report)

Frame

Four M3 holes on a 16 mm circle (16 × 16 mm); four M3 screws and an M5 nut come in the box. (BrotherHobby product page, BrotherHobby 1900KV test report, BrotherHobby load tests)

Where to buy

• BrotherHobbythe maker’s store; $22.99, down from $24.99; its KV selector offers a single option, labelled 1700
  $22.99seen 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 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, φ27 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 14 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, which BrotherHobby describes as thicker magnets set at an even air gap. (BrotherHobby product page, BrotherHobby infographic)
• Stator. 22 × 7.5 mm with 12 slots, in 0.15 mm Nippon Steel silicon steel. (BrotherHobby product page, BrotherHobby 1900KV test report)
• Bearings. NMB, 9 × 4 × 4 mm. (BrotherHobby product page)
• Base. 7075 aluminium, with four M3 holes on a 16 mm circle and 20 AWG leads 160 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 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.

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 22 × 7.5 mm stator, 27 mm bell, 19.9 mm height, 5 mm shaft, 16 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 2207.5 V3 Motor(CW) (product page on BrotherHobby’s store, with its spec list, photos and Tech Specs tab). Retrieved Oct 19, 2026.
2. BrotherHobby: Avenger 2207.5 V3 full-throttle summary for all three KVs, with the ESC for each (image on the product page). Retrieved Oct 19, 2026.
3. BrotherHobby: Avenger 2207.5 V3 features, bell, shaft and bearings (image on the product page). Retrieved Oct 19, 2026.
4. BrotherHobby: Avenger 2207.5 V3 features, wire, stator steel and magnets (image on the product page). Retrieved Oct 19, 2026.
5. BrotherHobby: Avenger 2207.5 V3 spec list and dimension drawing (image on the product page). Retrieved Oct 19, 2026.
6. BrotherHobby: Avenger 2207.5 V3 load test data, 2020 bench (1750KV and 1900KV at 24 V, 2350KV at 20 V, all on an HQ 5.1 × 4.1 × 3), with the packing list (image on the product page). Copper temperatures are after two minutes at full throttle.. Retrieved Oct 19, 2026.
7. BrotherHobby: Avenger 2207.5-1750KV test report, 2020-03-11, with drawing, spec table and the same load table as S6 (image on the Tech Specs tab). Retrieved Oct 19, 2026.
8. BrotherHobby: Avenger 2207.5-1900KV test report, 2019-12-26, with drawing, spec table and the same load table as S6 (image on the Tech Specs tab). Retrieved Oct 19, 2026.
9. BrotherHobby: Avenger 2207.5-2350KV test report, 2020-01-14, with drawing, spec table and the same load table as S6 (image on the Tech Specs tab). Retrieved Oct 19, 2026.