T-Motor F1404

What it pulls

T-Motor’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.

What you get for $14.90

• Light

  7.75 g without its leads, 9.34 g with them.

  Source: T-Motor product page

• Three windings

  3800KV for 3-inch long range, 4600KV for spec racing, and 2900KV rated for 4S–6S.

  Source: T-Motor product page

• Full bench data

  T-Motor's test report gives thrust, current, RPM, power and motor temperature in 5% throttle steps for 3- to 4-inch props.

  Source: T-Motor test report

What to pair it with

Our reading of T-Motor’s numbers, so your build matches what the motor was tested with.

ESC

Peak current over 60 s is 10.45 A for the 2900KV, 19 A for the 3800KV and 20 A for the 4600KV, so an ESC rated for 20 A or more per motor covers all three. T-Hobby suggests a 4–6S ESC. (T-Motor product page, T-Hobby product page)

Props

T-Motor benched all three KVs on 3-inch props (GF3016, GF3028-3, HQ3*3*3), and the 2900KV also on 3.5- and 4-inch props (HQ3520-3, GF4023-3, GF4024-2). T-Hobby lists 3–4-inch props. (T-Motor test report, T-Hobby product page)

Battery

3S–4S for the 3800KV and 4600KV, 4S–6S for the 2900KV. T-Hobby suggests a 4S 850 mAh or 6S 550 mAh 75C pack. (T-Motor product page, T-Hobby product page)

Frame

2.5–4-inch toothpick frames, per T-Hobby. The base takes four M2 screws on a 9 mm circle. (T-Hobby product page, T-Motor drawing)

Where to buy

• T-Motorthe maker's store (Tmotorhobby)
  $14.90seen Oct 19, 2026
  Visit
• T-HobbyT-Motor's hobby-brand store
  $14.90seen Oct 19, 2026
  Visit
• RaceDayQuads3800KV
  price on the store’s page
  Visit
• RaceDayQuads4600KV
  price on the store’s page
  Visit
• Pyrodrone3800KV
  price on the store’s page
  Visit
• Pyrodrone2900KV
  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 T-Motor’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:

• Stator. 14 mm across and 4 mm tall, 9 slots, under a 12-pole magnet ring (9N12P). (T-Motor product page)
• Shaft. 1.5 mm, standing 3 mm above the bell; the motor is 16.6 mm long overall. (T-Motor drawing)
• Bell. 17.9 mm across, with three open windows in the top and four M2 holes on a 5 mm circle round the shaft. (T-Motor drawing)
• Base. A four-armed base with M2 holes on a 9 mm circle; the three phases leave as 24 AWG leads, 150 mm long. (T-Motor product page)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 3800KV 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 12-pole rotor has 6 pole pairs, so every turn of the shaft is 6 electrical cycles, and a six-step ESC switches the phases 36 times per turn.

About the 3D model

A generic outrunner drawn from T-Motor’s published sizes: the 14 × 4 mm stator, 17.9 mm bell, 1.5 mm shaft, 9 mm mounting circle and 9 teeth and 12 magnets. Anything T-Motor 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. T-Motor: F1404 product page on its Tmotorhobby store (spec table per KV, product drawing, test report and contents are images on the page). Retrieved Oct 19, 2026.
2. T-Hobby (T-Motor's hobby brand): F1404 product page (specifications as text, recommended setup). Retrieved Oct 19, 2026.
3. T-Motor: F1404 test report, seven images on the product page (S1) starting with this one. Thrust in g, voltage measured per row, motor surface temperature after 1 min at 100% throttle; ambient 24 °C for the 2900KV, 8 °C for the 3800KV and 4600KV. Retrieved Oct 19, 2026.
4. T-Motor: F1404 product drawing and 2900KV spec table (image on the product page, S1). Retrieved Oct 19, 2026.