FlyFish Flash 2306

What it pulls

FlyFish’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.

What you get for $20.90

• 1.7 kg on 6S

  On FlyFishRC’s 24 V bench the 1750KV pulled 1,698.7 g at full throttle on an HQ S5, drawing 38.23 A; on 16 V the 2550KV pulled 1,456.5 g on a GF 51466.

  Source: FlyFishRC spec sheet

• One-piece 7075 bell

  FlyFishRC’s Uni-Bell is one piece of 7075 aluminium with a frosted matte finish; it says the design adds crash resistance without adding weight.

  Source: FlyFishRC product page (grey and purple)

• NMB bearings, N52SH magnets

  NMB 9 × 4 × 4 mm bearings, N52SH magnets, and copper wire rated to 220 °C.

  Source: FlyFishRC product page (grey and purple), FlyFishRC replacement bearing

• Braced lead exit

  FlyFishRC thickened the base and added braces where the wires leave it, and gave the prop seat a non-slip shape.

  Source: FlyFishRC product page (grey and purple)

What to pair it with

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

ESC

FlyFishRC gives a 10-second peak of 38.23 A for the 1750KV on 24 V and 47.50 A for the 2550KV on 16 V. A 45 A ESC covers the 1750KV; the 2550KV needs 50 A. (FlyFishRC spec sheet)

Props

5-inch props. On 24 V the 1750KV pulled 1,698.7 g on an HQ S5 and 1,687.4 g on a GF 51466 at full throttle; on 16 V the 2550KV pulled 1,432.7 g and 1,456.5 g on the same two props. (FlyFishRC spec sheet)

Battery

6S for the 1750KV, 4S for the 2550KV. (FlyFishRC product page (grey and purple), FlyFishRC product page (black), FlyFishRC spec sheet)

Frame

Four M3 holes on a 16 mm circle (16 × 16 mm) and 150 mm 20 AWG leads. (FlyFishRC product page (grey and purple), FlyFishRC spec sheet)

Where to buy

• FlyFishRCthe maker’s store; grey and purple, 1750KV
  $21.90seen Oct 19, 2026
  Visit
• FlyFishRCthe maker’s store; black, 1750KV or 2550KV
  $20.90seen 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 FlyFish’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. One piece of 7075 aluminium (FlyFishRC’s Uni-Bell), φ29.4 mm, in a grey and purple or black matte finish. (FlyFishRC product page (grey and purple), FlyFishRC product page (black), FlyFishRC spec sheet)
• Shaft. 5 mm titanium alloy (steel on the black version) with an M5 thread; it stands 13.5 mm above the bell, 8 mm of it threaded. (FlyFishRC product page (grey and purple), FlyFishRC product page (black), FlyFishRC spec sheet)
• Magnets. N52SH, which FlyFishRC describes as heat resistant. (FlyFishRC product page (grey and purple))
• Stator. 23 × 6 mm with 12 slots, wound with copper wire rated to 220 °C. (FlyFishRC product page (grey and purple))
• Bearings. NMB L-940ZZ, 9 × 4 × 4 mm, sold by FlyFishRC as replacements for the Flash 2207 and 2306. (FlyFishRC replacement bearing)
• Base. Thickened, with braces protecting the lead exit, and four M3 holes on a 16 mm circle. (FlyFishRC product page (grey and purple), FlyFishRC spec sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1750KV 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 FlyFish’s published sizes: the 23 × 6 mm stator, 29.4 mm bell, 18.3 mm height, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 magnets. Anything FlyFish 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. FlyFishRC: Flash 2306 1750KV FPV Motor (product page, grey and purple). Retrieved Oct 19, 2026.
2. FlyFishRC: Flash 2306 1750KV 2550KV Black FPV Motor (product page). Retrieved Oct 19, 2026.
3. FlyFishRC: Flash 2306 Motor (Grey & Purple / Black) spec sheet: spec table, dimension drawing and test report for the 1750KV at 24 V and the 2550KV at 16 V (the same image is on both product pages). Retrieved Oct 19, 2026.
4. FlyFishRC: NMB L-940ZZ 9x4x4 Bearing (replacement bearing for Flash 2207/2306 motors). Retrieved Oct 19, 2026.