BrotherHobby Avenger 3115 V5

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 $34.99

• 5 kg on a 12-inch prop

  At 25.2 V the 710KV pulled 4,974 g at full throttle on a folding 1248 tri-blade, drawing 61.5 A; BrotherHobby rounds it to 5 kg.

  Source: BrotherHobby 710KV test report, BrotherHobby summary, BrotherHobby weight and thrust

• Folding props in the box

  Sold with a set of BrotherHobby folding props, three-blade or two-blade, which mount on M3 holes on a 23 mm circle on top of the bell.

  Source: BrotherHobby product page, BrotherHobby drawing, BrotherHobby packing list (three-blade), BrotherHobby packing list (two-blade)

• Hard-anodised 7075

  Bell cap and base in 7075 aluminium with a hard-anodised finish, on a SUS420 heat-treated steel shaft.

  Source: BrotherHobby product page, BrotherHobby exploded view

• A prop for each KV

  BrotherHobby tested each KV with its own folding tri-blade, from 9.4 to 12 inches; full-throttle pull ran from 4,340 g (910KV) to 4,974 g (710KV).

  Source: BrotherHobby summary, BrotherHobby 710KV test report, BrotherHobby 730KV test report, BrotherHobby 790KV test report, BrotherHobby 910KV 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 65 A ESC for the 710KV, 6S 60 A for the 730KV and 910KV, and 6S 70 A for the 790KV; full-throttle peaks were 61.5 A, 55.8 A, 59.8 A and 63 A. (BrotherHobby summary, BrotherHobby 710KV test report, BrotherHobby 730KV test report, BrotherHobby 790KV test report, BrotherHobby 910KV test report)

Props

BrotherHobby’s folding tri-blades with a 23 mm hole pitch: on the 710KV a 1248 (4,974 g at full throttle), on the 730KV a 1148 (4,443 g), on the 790KV a GF1051-3 (4,651 g) and on the 910KV a 9453F (4,340 g). (BrotherHobby folding props, BrotherHobby 710KV test report, BrotherHobby 730KV test report, BrotherHobby 790KV test report, BrotherHobby 910KV test report)

Battery

6S for all four KVs. (BrotherHobby product page, BrotherHobby 710KV test report)

Frame

Four M3 holes on a 19 mm circle (19 × 19 mm); the folding props mount on top of the bell with BrotherHobby’s adapter, pins and flange nut, which come in the box. (BrotherHobby product page, BrotherHobby drawing, BrotherHobby packing list (three-blade))

Where to buy

• BrotherHobbythe maker’s store; $34.99, down from $36.99, for any KV with three-blade or two-blade folding props (the 710KV and every two-blade set showed none in stock)
  $34.99seen 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, φ37.5 mm, hard anodised, with a flat top: windows round the rim, three curved slots round the shaft and M3 holes on a 23 mm circle for the prop adapter. (BrotherHobby product page, BrotherHobby exploded view, BrotherHobby drawing, BrotherHobby 710KV test report)
• Shaft. SUS420 heat-treated steel with an M5 thread, standing 18 mm above the bell. (BrotherHobby exploded view, BrotherHobby drawing)
• Magnets. N52H arc magnets, 14 poles. (BrotherHobby product page, BrotherHobby exploded view)
• Stator. 31 × 15 mm with 12 slots, in non-oriented silicon steel, wound with TU1-grade enamelled wire. (BrotherHobby exploded view, BrotherHobby 710KV test report)
• Bearings. 12 × 6 × 4 mm. (BrotherHobby product page)
• Base. 7075 aluminium, with four M3 holes on a 19 mm circle and 16 AWG leads 300 mm long. (BrotherHobby product page, BrotherHobby drawing)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 710KV 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 × 15 mm stator, 37.5 mm bell, 31.55 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 3115 V5 710KV/730KV/910KV Motor (CW) (product page on BrotherHobby’s store, with its spec list, photos and Test Data tab; it also sells a 790KV). Retrieved Oct 19, 2026.
2. BrotherHobby: Avenger 3115 V5 weight and maximum thrust (image on the product page). Retrieved Oct 19, 2026.
3. BrotherHobby: Avenger 3115 V5 full-throttle summaries for all four KVs, with the prop and ESC for each (image on the product page). Retrieved Oct 19, 2026.
4. BrotherHobby: Avenger 3115 V5 exploded view: shaft, caps, magnets, bearings, wire and stator steel (image on the product page). Retrieved Oct 19, 2026.
5. BrotherHobby: Avenger 3115 V5 dimension drawing (image on the product page). Retrieved Oct 19, 2026.
6. BrotherHobby: folding tri-blade props with a 23 mm hole pitch and their swept diameters (image on the product page). Retrieved Oct 19, 2026.
7. BrotherHobby: Avenger 3115 V5 packing list with the three-blade folding props (image on the product page). Retrieved Oct 19, 2026.
8. BrotherHobby: Avenger 3115 V5 packing list with the two-blade folding props, and how to order either set (image on the product page). Retrieved Oct 19, 2026.
9. BrotherHobby: Avenger 3115 V5-710KV test report, 2022 bench, folding 1248 tri-blade at 25.2 V, 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.
10. BrotherHobby: Avenger 3115 V5-730KV test report, 2022 bench, folding 1148 tri-blade at 25.2 V, with drawing and spec table (image on the Test Data tab). Retrieved Oct 19, 2026.
11. BrotherHobby: Avenger 3115 V5-790KV test report, 2022 bench, folding GF1051-3 tri-blade at 25.2 V, with drawing and spec table (image on the Test Data tab). Retrieved Oct 19, 2026.
12. BrotherHobby: Avenger 3115 V5-910KV test report, 2022 bench, folding 9453F tri-blade at 25.2 V, with drawing and spec table (image on the Test Data tab). Retrieved Oct 19, 2026.