BrotherHobby Avenger 3110

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 $33.99

• 3.3 kg on an 11-inch prop

  At 25 V the 730KV pulled 3,347 g at full throttle on a GF 11 × 7 × 3, drawing 38.7 A.

  Source: BrotherHobby 730KV 11-inch test report, BrotherHobby thrust summary

• 3.2 kg on a 9-inch prop

  The 900KV pulled 3,203 g on an HQ 9 × 5 × 3 at 47.3 A.

  Source: BrotherHobby 900KV test report, BrotherHobby thrust summary

• Hard-anodised 7075

  Bell cap and base in 7075 aluminium with a hard-anodised finish; BrotherHobby says the cut-out top saves weight and sheds heat.

  Source: BrotherHobby product page, BrotherHobby infographic and drawing

• Balanced to 3 mg

  The test reports give a dynamic-balance standard of 3 mg or less, insulation resistance of 5 MΩ or more and a passed coil test.

  Source: BrotherHobby 730KV 10-inch test report, BrotherHobby 730KV 11-inch test report, BrotherHobby 900KV 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 50 A ESC for both KVs; full-throttle peaks were 47.3 A (900KV, 9-inch) and 38.7 A (730KV, 11-inch). (BrotherHobby thrust summary, BrotherHobby 730KV 10-inch test report, BrotherHobby 730KV 11-inch test report, BrotherHobby 900KV test report)

Props

BrotherHobby pairs it with 9-, 10- and 11-inch props. At full throttle the 900KV pulled 3,203 g on an HQ 9 × 5 × 3; the 730KV 3,017 g on an HQ 10 × 5 × 3 and 3,347 g on a GF 11 × 7 × 3. (BrotherHobby prop image, BrotherHobby 730KV 10-inch test report, BrotherHobby 730KV 11-inch test report, BrotherHobby 900KV test report)

Battery

6S for both KVs. (BrotherHobby product page, BrotherHobby 730KV 10-inch test report, BrotherHobby 900KV 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 (marked down from $36.99)
  $33.99seen 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, φ36.7 mm, hard anodised, with five spokes round a knurled hub. (BrotherHobby product page, BrotherHobby infographic and drawing)
• Shaft. Hollow titanium alloy, 5 mm with an M5 thread, standing 16 mm above the bell. (BrotherHobby product page, BrotherHobby infographic and drawing)
• Magnets. N52H arc magnets, 14 poles. (BrotherHobby product page, BrotherHobby infographic and drawing)
• Stator. 31 × 10 mm with 12 slots, in 0.2 mm Kawasaki silicon steel, wound with TU1-grade enamelled wire. (BrotherHobby product page, BrotherHobby infographic and drawing, BrotherHobby 900KV 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 infographic and drawing)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 900KV 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 31 × 10 mm stator, 36.7 mm bell, 24.2 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 3110 730KV/900KV Motor (CW) (product page on BrotherHobby’s store, with its spec list, photos and Test Data tab). Retrieved Oct 19, 2026.
2. BrotherHobby: Avenger 3110 weight and full-throttle summary for both KVs, with the ESC for each (image on the product page). Retrieved Oct 19, 2026.
3. BrotherHobby: Avenger 3110 on a 9/10/11-inch prop (image on the product page). Retrieved Oct 19, 2026.
4. BrotherHobby: Avenger 3110 exploded view (shaft, bell, magnets, bearings, wire, stator steel) and dimension drawing (image on the product page). Retrieved Oct 19, 2026.
5. BrotherHobby: Avenger 3110 packing list (image on the product page). Retrieved Oct 19, 2026.
6. BrotherHobby: Avenger 3110-730KV test report on 6S with an HQ 10 × 5 × 3 glass-fibre nylon prop, 2022 bench (image on the Test Data tab). Its heading names the prop GF 10 × 5 × 3; the tables say HQ.. Retrieved Oct 19, 2026.
7. BrotherHobby: Avenger 3110-730KV test report on 6S with a GF 11 × 7 × 3 glass-fibre nylon prop, 2022 bench (image on the Test Data tab). Retrieved Oct 19, 2026.
8. BrotherHobby: Avenger 3110-900KV test report on 6S with an HQ 9 × 5 × 3 glass-fibre nylon prop, 2022 bench (image on the Test Data tab). Retrieved Oct 19, 2026.