BrotherHobby LA 2005

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 $19.99

• 893 g on a 5-inch tri-blade

  On BrotherHobby’s 16 V bench the 2450KV pulled 893 g at full throttle on a Gemfan 51433, drawing 28.8 A.

  Source: BrotherHobby 2450KV test sheet

• 751 g on a 3-inch prop

  On 24 V the 2800KV pulled 751 g at full throttle on an HQ 3 × 4 × 3, drawing 26.1 A.

  Source: BrotherHobby 2800KV test sheet

• N52H magnets, TU1 copper

  N52H arc magnets and oxygen-free TU1 enamelled wire rated for high temperatures; BrotherHobby says the small air gap keeps magnetic losses low.

  Source: BrotherHobby product page

• NMB bearings

  Japanese NMB 7 × 3 × 3 mm bearings, which BrotherHobby says last longer and run quietly.

  Source: BrotherHobby product page

• Balance and winding tests

  Each KV’s sheet gives a dynamic-balance standard of 6 mg or less and a pass on a 500 V AC hipot test and an impulse winding test.

  Source: BrotherHobby 3450KV test sheet, BrotherHobby 2800KV test sheet, BrotherHobby 2450KV test sheet, BrotherHobby 1450KV test sheet

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 4S 24 A ESC for the 3450KV, a 6S 27 A for the 2800KV, a 4S 29 A for the 2450KV and a 6S 15 A for the 1450KV. Its bench peaks were 23.1 A, 26.1 A, 28.8 A and 15.0 A. (BrotherHobby 3450KV test sheet, BrotherHobby 2800KV test sheet, BrotherHobby 2450KV test sheet, BrotherHobby 1450KV test sheet)

Props

3-inch tri-blades for the 3450KV and 2800KV (530 g on 4S and 751 g on 6S with an HQ 3 × 4 × 3), 5-inch tri-blades for the 2450KV and 1450KV (893 g on 4S and 712 g on 6S with a Gemfan 51433). (BrotherHobby 3450KV test sheet, BrotherHobby 2800KV test sheet, BrotherHobby 2450KV test sheet, BrotherHobby 1450KV test sheet)

Battery

4S for the 3450KV and 2450KV, 6S for the 2800KV and 1450KV; BrotherHobby rates the motor for 4S–6S. (BrotherHobby product page, BrotherHobby 3450KV test sheet, BrotherHobby 2800KV test sheet, BrotherHobby 2450KV test sheet, BrotherHobby 1450KV test sheet)

Frame

Four M2 holes on a 12 mm circle (12 × 12 mm); the shaft has an M5 thread for the prop nut. (BrotherHobby product page, BrotherHobby drawing)

Where to buy

• BrotherHobbythe maker’s store; same price for every KV
  $19.99seen Oct 19, 2026
  Visit
• GetFPVchoose the KV
  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, φ24.6 mm. (BrotherHobby product page, BrotherHobby drawing)
• Shaft. 5 mm with an M5 thread, standing 12 mm above the bell. The spec list gives SUS 420; an infographic on the same page calls it hollow TC4 titanium alloy. (BrotherHobby product page, BrotherHobby drawing)
• Magnets. N52H arc magnets, 14 poles. (BrotherHobby product page)
• Stator. 20 × 5 mm with 12 slots, in 0.15 mm Nippon Steel silicon steel, wound with TU1 oxygen-free enamelled wire. (BrotherHobby product page, BrotherHobby 3450KV test sheet)
• Bearings. NMB, 7 × 3 × 3 mm. (BrotherHobby product page)
• Base. 7075 aluminium, with four M2 holes on a 12 mm circle and 24 AWG leads 160 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 3450KV 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 20 × 5 mm stator, 24.6 mm bell, 14.9 mm height, 5 mm shaft, 12 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: LA 2005 Motor (product page on BrotherHobby’s store, with its spec list, photos and infographics). Retrieved Oct 19, 2026.
2. BrotherHobby: LA 2005 dimension drawing (image on the product page’s Test Data tab). Retrieved Oct 19, 2026.
3. BrotherHobby: LA 2005 3450KV spec table and load test on an HQ 3 × 4 × 3 at 16 V (image on the Test Data tab). It gives the copper temperature after two minutes at full throttle as 67.1 °C; the page’s infographic gives 95.4 °C for the same run.. Retrieved Oct 19, 2026.
4. BrotherHobby: LA 2005 2800KV spec table and load test on an HQ 3 × 4 × 3 at 24 V (image on the Test Data tab). It gives the copper temperature after two minutes at full throttle as 80.1 °C; the page’s infographic gives 107.4 °C for the same run.. Retrieved Oct 19, 2026.
5. BrotherHobby: LA 2005 2450KV spec table and load test on a Gemfan 51433 at 16 V (image on the Test Data tab). Retrieved Oct 19, 2026.
6. BrotherHobby: LA 2005 1450KV spec table and load test on a Gemfan 51433 at 24 V (image on the Test Data tab). Retrieved Oct 19, 2026.