EMAX FS2306

What you get

• The Buzz’s motor

  EMAX fits the FS2306 1700KV to its Buzz freestyle quad and sells it as a spare.

  Source: EMAX USA product page (1700KV), EMAX product page

• 937 W peak on 6S

  EMAX rates the 1700KV at 37.2 A and 937.4 W peak on 6S, and the 2400KV at 44.3 A and 744.2 W on 4S.

  Source: EMAX spec sheet

• 7075 aluminium bell

  A 7075 aluminium bell on a hollow steel shaft, with EZO 9 × 4 × 4 mm bearings and multi-strand windings.

  Source: EMAX USA product page (1700KV)

What to pair it with

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

ESC

EMAX rates the peak current at 37.2 A for the 1700KV on 6S and 44.3 A for the 2400KV on 4S; a 45 A ESC covers both. (EMAX spec sheet)

Props

5 to 5.5-inch props for both KVs. (EMAX spec sheet)

Battery

6S for the 1700KV (rated 3S–6S) and 4S for the 2400KV (rated 3S–4S); EMAX gives their peak figures on those packs. (EMAX spec sheet)

Frame

Four M3 holes on a 16 mm circle (16 × 16 mm). (EMAX spec sheet)

Where to buy

• EMAX USAthe maker’s US store; 1700KV (listed as sold out)
  $17.99seen Oct 19, 2026
  Visit
• EMAX USAthe maker’s US store; 2400KV (listed as sold out)
  $17.99seen Oct 19, 2026
  Visit
• EMAXthe maker’s global store; 1700KV and 2400KV (the 2400KV was listed as sold out)
  $13.86seen Oct 19, 2026
  Visit

Plain links, not affiliate links. Prices change; the store’s page has the current one.

Full specs

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

• Shaft. Hollow steel, M5 thread (9 mm of thread), stands 13 mm above the bell; 4 mm through the bearings. (EMAX spec sheet, EMAX USA product page (1700KV))
• Bell. 7075 aluminium. (EMAX USA product page (1700KV))
• Magnets. N25SH arc magnets (as EMAX writes it on both pages; N25SH is not a usual magnet grade, and EMAX’s other motors use N52 or N52SH). (EMAX USA product page (1700KV), EMAX USA product page (2400KV))
• Stator. The coils are wound on a stack of thin steel laminations: 23 × 6 mm (2306). (EMAX USA product page (1700KV), EMAX product page)
• Winding. Multi-strand. (EMAX USA product page (1700KV), EMAX USA product page (2400KV))
• Bearings. EZO 9 × 4 × 4 mm. (EMAX USA product page (1700KV), EMAX USA product page (2400KV))
• Base. 4 × M3 holes on a 16 mm circle (16 × 16 mm). (EMAX spec sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1700KV 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 EMAX’s published sizes: the 23 × 6 mm stator, 27.8 mm bell, 18.2 mm height, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 magnets. Anything EMAX 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. EMAX USA: EMAX Freestyle Spec Brushless Performance motor FS 2306 1700kv (product page, with the feature list and EMAX’s FS2306 spec sheet). Retrieved Oct 19, 2026.
2. EMAX USA: EMAX Freestyle Spec Brushless Performance motor FS 2306 2400kv (product page). Retrieved Oct 19, 2026.
3. EMAX: Freestyle FS2306 1700KV 3-6S, 2400KV 3-4S, “for Buzz” (product page on EMAX’s global store). Retrieved Oct 19, 2026.
4. EMAX: FS2306 spec sheet (dimension drawing and spec table for the 1700KV and 2400KV; image on EMAX USA’s product pages). Retrieved Oct 19, 2026.