FlyFish Flash 2506

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 $23.90

• 2 kg on 6S

  On FlyFishRC’s 24 V bench the 1750KV pulled 2,028.5 g at full throttle on a GF 6030, drawing 42.55 A; the 1550KV pulled 1,818.3 g on the same prop at 33.35 A.

  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

• NMB bearings, N52SH magnets

  NMB bearings, N52SH magnets, a titanium alloy shaft, and copper wire rated to 220 °C.

  Source: FlyFishRC product page

• 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

What to pair it with

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

ESC

FlyFishRC gives 10-second peaks of 33.35 A for the 1550KV and 42.55 A for the 1750KV on 24 V. A 45 A ESC covers both. (FlyFishRC spec sheet)

Props

6-inch props. On 24 V the 1550KV pulled 1,806.2 g on an HQ 6 × 2.5 × 3 and 1,818.3 g on a GF 6030 at full throttle; the 1750KV pulled 2,019.6 g and 2,028.5 g on the same two props. (FlyFishRC spec sheet)

Battery

6S for both versions. (FlyFishRC product page)

Frame

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

Where to buy

• FlyFishRCthe maker’s store; same price for both KVs
  $23.90seen 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), φ31.4 mm, in a grey and gold matte finish. (FlyFishRC product page, FlyFishRC spec sheet)
• Shaft. 5 mm titanium alloy with an M5 thread, standing 13.5 mm above the bell. (FlyFishRC product page, FlyFishRC spec sheet)
• Magnets. N52SH, which FlyFishRC describes as heat resistant. (FlyFishRC product page)
• Stator. 25 × 6 mm with 12 slots, wound with copper wire rated to 220 °C. (FlyFishRC product page)
• Bearings. NMB. (FlyFishRC product page)
• Base. Thickened, with braces protecting the lead exit, and four M3 holes on a 16 mm circle. (FlyFishRC product page, FlyFishRC spec sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1550KV 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 25 × 6 mm stator, 31.4 mm bell, 18.4 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 2506 1550KV 1750KV FPV Motor (product page). Retrieved Oct 19, 2026.
2. FlyFishRC: Flash 2506 Motor (Grey & Gold) spec sheet: spec table, dimension drawing and test report for both KVs at 24 V on two 6-inch props (image on the product page). The rpm column is left out of the 1550KV tables: the GF 6030 figures are the HQ 6 × 2.5 × 3 ones plus 30 at every step but full throttle, where they are the same.. Retrieved Oct 19, 2026.