Axisflying AF204 2004

What you get

• For small, light quads

  Axisflying pitches the AF204 at 3- and 3.5-inch cinewhoops, ultralight freestyle quads and toothpicks.

  Source: Axisflying intro image

• 5-inch magnetic design

  Axisflying says the AF204 borrows the magnetic circuit design of a 5-inch freestyle motor for linear, steady power, and claims less noise and heat.

  Source: Axisflying design image

• Shielded bearings

  Axisflying's bearing shield houses the bearings to an IP53 rating against dust and water; it says this keeps them smooth for longer.

  Source: Axisflying bearing image

• Bench numbers

  On a GF 5125 at full throttle: 948 g at 16.61 A (1810KV on 6S), 946 g at 24.7 A (2910KV on 4S) and 849 g at 33.2 A (3710KV on 3S).

  Source: Axisflying test data

What to pair it with

Our reading of Axisflying’s numbers, so your build matches what the motor was tested with.

ESC

Axisflying rates the peak current at 33 A; on its bench the 3710KV drew 33.2 A on 3S, the 2910KV 24.7 A on 4S and the 1810KV 16.61 A on 6S. (Axisflying specs and drawing, Axisflying test data)

Props

Axisflying tested every KV on GF 5125 props. (Axisflying test data)

Battery

Rated 3S–6S. Axisflying benched the 1810KV on 6S, the 2910KV on 4S and the 3710KV on 3S. (Axisflying specs and drawing, Axisflying test data)

Frame

Four M2 screws on a 12 mm circle. (Axisflying specs and drawing)

Full specs

Bench data

Redrawn from Axisflying’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. A silver band with a grey spoked top edged in red. (Axisflying intro image)
• Base. Bronze, edged in red. (Axisflying feature image)
• Shaft. 1.5 mm, standing 1.6 mm above the bell, with four M2 prop holes in the top; a screw locks the shaft. (Axisflying specs and drawing, Axisflying feature image)
• Bearings. Housed behind Axisflying's IP53 bearing shield. (Axisflying bearing image)
• Stator. 20 × 4 mm, 12 slots, single winding, with 14 N52H arc magnets in the bell. (Axisflying specs and drawing, Axisflying feature image)
• Leads. 24 AWG silicone wire, 130 mm. (Axisflying specs and drawing)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 2910KV 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 Axisflying’s published sizes: the 20 × 4 mm stator, 24.6 mm bell, 13.7 mm height, 1.5 mm shaft, 12 mm mounting circle and 12 teeth and 14 magnets. Anything Axisflying 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. Axisflying: AF204 1810KV/2910KV/3710KV (product page on Axisflying's own store, Wayback Machine copy captured 2021-12-09; Axisflying's current site no longer lists the motor). Retrieved Oct 19, 2026.
2. Axisflying: AF204 basic data and outline drawing (image on the 2021 product page, Wayback Machine copy; NewBeeDrone's file server has the same image). Retrieved Oct 19, 2026.
3. Axisflying: AF204 test data on GF 5125 props, 1810KV on 6S, 2910KV on 4S and 3710KV on 3S (image on the 2021 product page, Wayback Machine copy; NewBeeDrone's file server has the same image). Axisflying's throttle column is left out and the rows kept as thrust steps ending at full throttle (see modelNotes). Each row's voltage is as measured; the table's voltage is its first row.. Retrieved Oct 19, 2026.
4. Axisflying: AF204 intro image ("3 / 3.5 cinewhoop, ultralight freestyle / toothpick") (image on the 2021 product page, Wayback Machine copy; NewBeeDrone's file server has the same image). Used for finish.. Retrieved Oct 19, 2026.
5. Axisflying: AF204 feature image (single winding, N52H arc magnets, screw-locked shaft) (image on the 2021 product page, Wayback Machine copy; NewBeeDrone's file server has the same image). Its view of the base is used for finish.. Retrieved Oct 19, 2026.
6. Axisflying: Bearing Shield Technology image (IP53 bearing housing; image on the AF204's 2021 product page, Wayback Machine copy captured 2022-03-07; NewBeeDrone's file server has the same image). Retrieved Oct 19, 2026.
7. Axisflying: AF204 feature image (less noise, less heat; magnetic circuit design of a 5-inch freestyle motor) (image on the 2021 product page, Wayback Machine copy; NewBeeDrone's file server has the same image). Retrieved Oct 19, 2026.