5-inch FPV freestyle motor
FlyFish Flash 2207
A 5-inch freestyle motor: 2207 stator in a one-piece 7075 aluminium bell, NMB bearings and N52SH magnets, and 1,814 g of pull per motor on FlyFishRC’s 24 V bench (1850KV, HQ S5).
- 5-inch freestyle
- 6S (1850KV, 1950KV, 2005KV) or 4S (2750KV)
- 5-inch props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2207 motor drawn from FlyFish’s published sizes, not its exact design. Thrust, current and power are FlyFish’s bench figures for the HQ S5 prop at 24 V, read straight across between its throttle steps. Its data starts at 50% throttle.
- Max thrust
- 1,814 g
- HQ S5 prop, 24 V
- Weight
- 34.3 g
- with 150 mm leads, from the spec sheet; 2750KV 34.2 g, 1950KV 34.2 g, 2005KV 34.1 g (S4). The product pages give more: 40.5 g for the 1850KV, 41.5 g for the 1950KV and 42.5 g for the 2005KV, each with 150 mm wires.
- Peak current
- 40.0 A
- full throttle
- Max power
- 934 W
- full throttle
from $20.90a motor at FlyFishRC
A set of four: $83.60
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What it pulls
FlyFish’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.
At 60% with the HQ S5: 886 g of thrust, 17.5 A, 417 W, 2.10 g per watt.
On your quad
11.2 : 1
Thrust to weight at full throttle: four motors pull 7,258 g with the HQ S5 at 24 V.
At 60% throttle they pull 3,542 g, 5.4 times the quad’s weight.
All-up weight is the quad ready to fly, with its battery and camera. The thrust is the maker’s static bench figure; in the air it is lower.
What you get for $20.90
About 1.8 kg of pull on 6S
On FlyFishRC’s 24 V bench the 1850KV pulled 1,814 g at full throttle on an HQ S5, drawing 40.01 A; the black 2005KV pulled 1,754 g on a GF 51466.
Source: FlyFishRC spec sheet (grey and purple), FlyFishRC spec sheet (black)
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 (1850KV)
NMB bearings, N52SH magnets
NMB 9 × 4 × 4 mm bearings, N52SH magnets, and copper wire rated to 220 °C.
Source: FlyFishRC product page (1850KV), 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 (1850KV)
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 40.01 A for the 1850KV, 41.42 A for the 1950KV and 42.70 A for the 2005KV on 24 V, and 44.51 A for the 2750KV on 16 V (44.93 A in its GF 51466 test). A 45 A ESC covers all four. (FlyFishRC spec sheet (grey and purple), FlyFishRC spec sheet (black))
- Props
- 5-inch props. On FlyFishRC’s 24 V bench the 1850KV pulled most on an HQ S5 (1,814 g) and least on an HQ R35 (1,642 g); the 1950KV and 2005KV pulled 1,668–1,754 g; the 2750KV pulled 1,371–1,395 g on 16 V. (FlyFishRC spec sheet (grey and purple), FlyFishRC spec sheet (black))
- Battery
- 6S for the 1850KV, 1950KV and 2005KV; 4S for the 2750KV, which FlyFishRC tested on 16 V. The grey-and-purple page lists 4S/6S, the black page 6S. (FlyFishRC product page (1850KV), FlyFishRC product page (black), FlyFishRC spec sheet (grey and purple))
- Frame
- Four M3 holes on a 16 mm circle (16 × 16 mm) and 150 mm 20 AWG leads. (FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple))
Where to buy
- FlyFishRCthe maker’s store; grey and purple, 1850KV$21.90seen Oct 19, 2026Visit
- FlyFishRCthe maker’s store; black, 1950KV or 2005KV$20.90seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 1,850 rpm/V (also 1950KV and 2005KV in black (S2); FlyFishRC’s grey-and-purple sheet also tests a 2750KV (S3)) | FlyFishRC product page (1850KV) |
| Stator | 22 × 7 mm (2207) | FlyFishRC product page (1850KV) |
| Configuration | 12N14P (12 stator slots, 14 magnet poles) | FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple) |
| Battery | 4S/6S LiPo (grey and purple 1850KV); 6S (black 1950KV and 2005KV) (FlyFishRC tests the 1850KV, 1950KV and 2005KV on 24 V and the 2750KV on 16 V) | FlyFishRC product page (1850KV), FlyFishRC product page (black) |
| Weight | 34.3 g (with 150 mm leads, from the spec sheet; 2750KV 34.2 g, 1950KV 34.2 g, 2005KV 34.1 g (S4). The product pages give more: 40.5 g for the 1850KV, 41.5 g for the 1950KV and 42.5 g for the 2005KV, each with 150 mm wires.) | FlyFishRC spec sheet (grey and purple) |
| Dimensions | φ28.4 × 32.3 mm (with shaft); the shaft stands 13.5 mm above the bell | FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple) |
| Shaft | 5 mm titanium alloy, M5 thread (8 mm threaded), protrudes 13.5 mm (the black version’s page says a steel shaft (S2)) | FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple) |
| Mounting | 4 × M3 holes on a 16 mm circle (16 × 16 mm) | FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple) |
| Bell | 7075 aluminium Uni-Bell (one piece), frosted matte finish | FlyFishRC product page (1850KV) |
| Magnets | N52SH | FlyFishRC product page (1850KV) |
| Bearings | NMB L-940ZZ, 9 × 4 × 4 mm | FlyFishRC product page (1850KV), FlyFishRC replacement bearing |
| Winding | Copper wire rated to 220 °C | FlyFishRC product page (1850KV) |
| Peak current | 40.01 A (over 10 s at 24 V; 2750KV 44.51 A at 16 V (its GF 51466 test drew 44.93 A at full throttle); 1950KV 41.42 A and 2005KV 42.70 A at 24 V (S4)) | FlyFishRC spec sheet (grey and purple) |
| Max power | 933.8 W (over 10 s at 24 V; 2750KV 681.4 W at 16 V (691.0 W in its GF 51466 test); 1950KV 967.2 W and 2005KV 997.0 W at 24 V (S4)) | FlyFishRC spec sheet (grey and purple) |
| Leads | 20 AWG, 150 mm | FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple) |
| In the box | The motor and a hardware set | FlyFishRC product page (1850KV) |
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.
1850KV on 6S, 24 V3 props
| Prop | Throttle | Voltage (V) | Current (A) | Thrust (g) | RPM | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|---|
| HQ S5 | 50% | 23.91 | 11.2 | 652.9 | 18638 | 267.8 | 2.4 |
| 60% | 23.82 | 17.52 | 885.6 | 21387 | 417.3 | 2.1 | |
| 70% | 23.7 | 23.04 | 1,127.5 | 24030 | 546 | 2.1 | |
| 80% | 23.62 | 28.52 | 1,382.4 | 25845 | 673.6 | 2.1 | |
| 90% | 23.46 | 35.37 | 1,634.9 | 27685 | 829.8 | 2 | |
| 100% | 23.34 | 40.01 | 1,814.4 | 29601 | 933.8 | 1.9 | |
| GF 51466 | 50% | 23.94 | 10.52 | 612.1 | 19711 | 251.8 | 2.4 |
| 60% | 23.86 | 14.62 | 816.9 | 22395 | 348.8 | 2.3 | |
| 70% | 23.77 | 20.46 | 1,105.8 | 25310 | 486.3 | 2.3 | |
| 80% | 23.68 | 25.39 | 1,325.4 | 27332 | 601.2 | 2.2 | |
| 90% | 23.55 | 30.5 | 1,526.3 | 29704 | 718.3 | 2.1 | |
| 100% | 23.41 | 37.68 | 1,716.2 | 31921 | 882.1 | 1.9 | |
| HQ R35 | 50% | 23.94 | 10.95 | 604.6 | 19757 | 262.1 | 2.3 |
| 60% | 23.86 | 14.85 | 813.7 | 22692 | 354.3 | 2.3 | |
| 70% | 23.78 | 19.58 | 988.1 | 25461 | 465.6 | 2.1 | |
| 80% | 23.68 | 24.02 | 1,172 | 27685 | 568.8 | 2.1 | |
| 90% | 23.53 | 30.53 | 1,392.4 | 30122 | 718.4 | 1.9 | |
| 100% | 23.44 | 36.7 | 1,642.4 | 32405 | 860.2 | 1.9 |
1950KV on 6S, 24 V2 props
| Prop | Throttle | Voltage (V) | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| GF 51466 | 50% | 23.86 | 11.81 | 757.8 | 281.8 | 2.69 |
| 60% | 23.81 | 16.01 | 996.3 | 381.2 | 2.61 | |
| 70% | 23.7 | 21.21 | 1,167.2 | 502.7 | 2.32 | |
| 80% | 23.6 | 26.32 | 1,279.4 | 621.2 | 2.06 | |
| 90% | 23.49 | 34.1 | 1,683.1 | 801 | 2.1 | |
| 100% | 23.35 | 41.42 | 1,737.6 | 967.2 | 1.8 | |
| HQ J37 | 50% | 23.91 | 11.2 | 698.4 | 267.8 | 2.61 |
| 60% | 23.82 | 16.03 | 890.2 | 381.8 | 2.33 | |
| 70% | 23.7 | 21.2 | 1,064.6 | 502.4 | 2.12 | |
| 80% | 23.62 | 24.53 | 1,210.2 | 579.4 | 2.09 | |
| 90% | 23.46 | 33.1 | 1,554.6 | 776.5 | 2 | |
| 100% | 23.34 | 37.56 | 1,668.4 | 876.7 | 1.9 |
Source: FlyFishRC spec sheet (black)
2005KV on 6S, 24 V2 props
| Prop | Throttle | Voltage (V) | Current (A) | Thrust (g) | RPM | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|---|
| GF 51466 | 50% | 23.86 | 12.5 | 777.4 | 19108 | 298.3 | 2.61 |
| 60% | 23.81 | 16.75 | 1,002.4 | 21614 | 398.8 | 2.51 | |
| 70% | 23.7 | 21.86 | 1,186.2 | 23988 | 518.1 | 2.29 | |
| 80% | 23.6 | 26.88 | 1,297 | 25797 | 634.4 | 2.04 | |
| 90% | 23.49 | 34.1 | 1,698.7 | 27527 | 801 | 2.12 | |
| 100% | 23.35 | 42.7 | 1,754.3 | 29215 | 997 | 1.76 | |
| HQ R35 | 50% | 23.9 | 11.45 | 670.7 | 20129 | 273.7 | 2.45 |
| 60% | 23.84 | 15.67 | 982 | 23121 | 373.6 | 2.63 | |
| 70% | 23.71 | 20.66 | 1,089.1 | 25845 | 489.8 | 2.22 | |
| 80% | 23.62 | 25.47 | 1,286.6 | 28048 | 601.6 | 2.14 | |
| 90% | 23.52 | 32.43 | 1,487.7 | 30662 | 762.8 | 1.95 | |
| 100% | 23.38 | 40.1 | 1,685.3 | 32777 | 937.5 | 1.8 |
Source: FlyFishRC spec sheet (black)
2750KV on 4S, 16 V2 props
| Prop | Throttle | Voltage (V) | Current (A) | Thrust (g) | RPM | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|---|
| GF 51466 | 50% | 15.77 | 12.11 | 576.2 | 19095 | 191 | 3 |
| 60% | 15.67 | 17.63 | 757.5 | 21603 | 276.3 | 2.7 | |
| 70% | 15.66 | 24.31 | 945.3 | 23963 | 380.7 | 2.5 | |
| 80% | 15.56 | 31.19 | 1,120 | 25767 | 485.3 | 2.3 | |
| 90% | 15.43 | 37.12 | 1,291.6 | 27507 | 572.8 | 2.3 | |
| 100% | 15.38 | 44.93 | 1,395.4 | 29197 | 691 | 2 | |
| HQ R35 | 50% | 15.98 | 11.97 | 566.3 | 19311 | 191.3 | 3 |
| 60% | 15.77 | 17.44 | 746.4 | 21879 | 275 | 2.7 | |
| 70% | 15.66 | 24.12 | 936.9 | 24234 | 377.7 | 2.5 | |
| 80% | 15.54 | 30.78 | 1,054 | 26161 | 478.3 | 2.2 | |
| 90% | 15.43 | 37.58 | 1,205.4 | 27957 | 579.9 | 2.1 | |
| 100% | 15.31 | 44.51 | 1,370.6 | 29704 | 681.4 | 2 |
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), φ28.4 mm, with a frosted matte finish. Replacement bells come with an M3 × 4 mm screw, washers and a dampening O-ring. (FlyFishRC product page (1850KV), FlyFishRC spec sheet (grey and purple), FlyFishRC replacement bell)
- 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 (1850KV), FlyFishRC product page (black), FlyFishRC spec sheet (grey and purple))
- Magnets. N52SH, which FlyFishRC describes as heat resistant. (FlyFishRC product page (1850KV))
- Stator. 22 × 7 mm with 12 slots, wound with copper wire rated to 220 °C. (FlyFishRC product page (1850KV))
- 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 (1850KV), FlyFishRC spec sheet (grey and purple))
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1850KV 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.
| Battery | Volts | No-load rpm (KV × V) | Electrical frequency | ESC steps per second |
|---|---|---|---|---|
| 4S nominal | 14.8 | 27,380 | 3,194 Hz | 19,166 |
| 4S full | 16.8 | 31,080 | 3,626 Hz | 21,756 |
| 6S nominal | 22.2 | 41,070 | 4,792 Hz | 28,749 |
| 6S full | 25.2 | 46,620 | 5,439 Hz | 32,634 |
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 22 × 7 mm stator, 28.4 mm bell, 18.8 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
- FlyFishRC: Flash 2207 1850KV FPV Motor (product page, grey and purple). Retrieved Oct 19, 2026.
- FlyFishRC: Flash 2207 1950KV 2005KV FPV Black Motor (product page). Retrieved Oct 19, 2026.
- FlyFishRC: Flash 2207 (Grey & Purple) spec sheet: spec table, dimension drawing and test report for the 1850KV at 24 V and the 2750KV at 16 V (image on the 1850KV product page). Retrieved Oct 19, 2026.
- FlyFishRC: Flash 2207 (Black) spec sheet: spec table, dimension drawing and test report for the 1950KV and 2005KV at 24 V (image on the black product page). The rpm column is left out of the 1950KV tables: from 50% to 90% throttle its figures are the same as in the 1850KV’s GF51466 and HQ S5 tables (S3), a different motor.. Retrieved Oct 19, 2026.
- FlyFishRC: NMB L-940ZZ 9x4x4 Bearing (replacement bearing for Flash 2207/2306 motors). Retrieved Oct 19, 2026.
- FlyFishRC: Flash 2207 Replacement Motor Bell (for the 1850KV and 2750KV motor). Retrieved Oct 19, 2026.