5–6-inch FPV freestyle and racing motor
BetaFPV Snow 2306
A 34 g 2306 for 5–6 inch quads in 1860KV (6S) and 2500KV (4S); on BetaFPV's bench it pulls 1668 g at 24 V (1860KV) and 1414 g at 16 V (2500KV) on a Gemfan Hurricane 51433 three-blade.
- 5–6 inch freestyle and racing quads
- 6S (1860KV) or 4S (2500KV)
- Gemfan 51433, 51466 MCK V2 and Freestyle 3S three-blade props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2306 motor drawn from BetaFPV’s published sizes, not its exact design. Thrust, current and power are BetaFPV’s bench figures for the 51433-3B prop at 24 V, read straight across between its throttle steps. Its data starts at 40% throttle.
- Max thrust
- 1,668 g
- 51433-3B prop, 24 V
- Weight
- 34 g
- with wires
- Peak current
- 35.9 A
- full throttle
- Max power
- 859 W
- full throttle
Plain links: we earn nothing from them.
What it pulls
BetaFPV’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.
At 60% with the 51433-3B: 587 g of thrust, 7.1 A, 170 W, 3.48 g per watt.
On your quad
10.3 : 1
Thrust to weight at full throttle: four motors pull 6,672 g with the 51433-3B at 24 V.
At 60% throttle they pull 2,348 g, 3.6 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
1668 g on 6S
On BetaFPV's 24 V bench the 1860KV pulls 1668 g at full throttle on a Gemfan Hurricane 51433 three-blade, drawing 35.88 A.
1414 g on 4S
The 2500KV pulls 1414 g at full throttle on the same prop at 16 V, drawing 42.89 A.
Titanium shaft, N52SH magnets
A TC4 titanium alloy shaft, sintered N52SH arc magnets, NMB bearings and a 7075 aluminium end cap.
Source: BetaFPV product page, BetaFPV banner
34 g with leads
Both KVs weigh 34 g including 160 mm of 20 AWG wire.
Source: BetaFPV product page
What to pair it with
Our reading of BetaFPV’s numbers, so your build matches what the motor was tested with.
- ESC
- BetaFPV calls for at least a 40 A ESC. On its bench the 1860KV draws up to 37.20 A at 24 V and the 2500KV up to 44.37 A at 16 V, both on the Gemfan 51466 MCK V2. (BetaFPV product page, BetaFPV 1860KV drawing and bench table, BetaFPV 2500KV drawing and bench table)
- Props
- BetaFPV recommends Gemfan Freestyle 3S, Hurricane 51433 and 51466 MCK V2 three-blade props on 5 mm shafts, and tested all three. (BetaFPV product page, BetaFPV 1860KV drawing and bench table, BetaFPV 2500KV drawing and bench table)
- Battery
- 6S for the 1860KV, 4S for the 2500KV. BetaFPV suggests 6S 1300 mAh or 4S 1500 mAh 120C packs, for a takeoff weight of about 600 g or 580 g. (BetaFPV product page, BetaFPV banner)
- Frame
- 5–6 inch frames; four M3 screws on a 16 mm circle. M3×8 and M3×10 screws come in the box. (BetaFPV product page, BetaFPV 1860KV drawing and bench table)
Where to buy
- BETAFPVthe maker's store; 1 motor, either KV; sold out and tagged discontinued when checked$16.79seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 1,860 rpm/V (also 2500KV) | BetaFPV product page |
| Stator | 23 × 6 mm (2306), 0.15 mm silicon steel core (size from BetaFPV's name) | BetaFPV product page |
| Configuration | 12N14P (12 stator slots, 14 magnet poles) | BetaFPV product page |
| Battery | 4S–6S LiPo (BetaFPV marks the 1860KV for 6S and the 2500KV for 4S) | BetaFPV product page, BetaFPV banner |
| Weight | 34 g (with wires) | BetaFPV product page |
| Dimensions | φ29.3 × 30.6 mm (with shaft); body 18.3 mm tall | BetaFPV product page, BetaFPV 1860KV drawing and bench table |
| Shaft | 5 mm TC4 titanium alloy with an M5 thread, protrudes 12.3 mm | BetaFPV product page, BetaFPV 1860KV drawing and bench table |
| Mounting | 4 × M3 holes, evenly spaced on a 16 mm circle | BetaFPV 1860KV drawing and bench table |
| Bell | 7075 aluminium alloy (BetaFPV names 7075 aluminium for the end cap and the rotor) | BetaFPV product page |
| Magnets | sintered NdFeB N52SH, arc-shaped | BetaFPV product page, BetaFPV banner |
| Bearings | NMB | BetaFPV product page |
| Leads | 20 AWG, 160 mm | BetaFPV product page |
| In the box | 1 motor, 5 × M3×8 and 5 × M3×10 screws, 1 × M5 nut | BetaFPV product page |
Bench data
Redrawn from BetaFPV’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.
1860KV on 6S, 24 V3 props
| Prop | Voltage (V) | Throttle | Current (A) | Thrust (g) | RPM | Efficiency (g/W) | Power (W) |
|---|---|---|---|---|---|---|---|
| 51433-3B (Gemfan Hurricane 51433, 3-blade) | 24 | 40% | 1.66 | 167 | 12643 | 4.26 | 39.71 |
| 24 | 50% | 3.86 | 398 | 16390 | 4.32 | 92.53 | |
| 24 | 60% | 7.12 | 587 | 19541 | 3.48 | 170.39 | |
| 24 | 70% | 12.85 | 786 | 23281 | 2.56 | 308 | |
| 24 | 80% | 19.52 | 1,085 | 26629 | 2.33 | 466.69 | |
| 24 | 90% | 27.77 | 1,391 | 29371 | 2.09 | 665.94 | |
| 24 | 100% | 35.88 | 1,668 | 30933 | 1.94 | 859.43 | |
| Freestyle 3S 3B (Gemfan Freestyle 3S, 3-blade) | 24 | 40% | 1.57 | 169 | 12858 | 4.54 | 37.5 |
| 24 | 50% | 3.83 | 311 | 16692 | 3.43 | 91.8 | |
| 24 | 60% | 7.05 | 496 | 19993 | 2.97 | 168.9 | |
| 24 | 70% | 11.59 | 716 | 23733 | 2.6 | 277.2 | |
| 24 | 80% | 18.14 | 1,152 | 27361 | 2.66 | 434.5 | |
| 24 | 90% | 25.69 | 1,417 | 30438 | 2.31 | 615 | |
| 24 | 100% | 33.36 | 1,645 | 32408 | 2.06 | 799.4 | |
| 51466V2 3B (Gemfan 51466 MCK V2, 3-blade) | 24 | 40% | 1.66 | 195 | 12526 | 5.09 | 39.68 |
| 24 | 50% | 4.18 | 375 | 16265 | 3.77 | 100.29 | |
| 24 | 60% | 7.52 | 611 | 19233 | 3.41 | 180.35 | |
| 24 | 70% | 13.2 | 836 | 22954 | 2.65 | 316.44 | |
| 24 | 80% | 20.43 | 1,114 | 26243 | 2.28 | 489.9 | |
| 24 | 90% | 29 | 1,363 | 29010 | 1.97 | 694.52 | |
| 24 | 100% | 37.2 | 1,534 | 30363 | 1.72 | 892.89 |
2500KV on 4S, 16 V3 props
| Prop | Voltage (V) | Throttle | Current (A) | Thrust (g) | RPM | Efficiency (g/W) | Power (W) |
|---|---|---|---|---|---|---|---|
| 51433-3B (Gemfan Hurricane 51433, 3-blade) | 16 | 30% | 3.72 | 215 | 13338 | 3.64 | 59.63 |
| 16 | 40% | 6.31 | 328 | 15626 | 3.27 | 101.23 | |
| 16 | 50% | 9.22 | 468 | 17643 | 3.17 | 147.68 | |
| 16 | 60% | 13.15 | 589 | 19807 | 2.8 | 211.06 | |
| 16 | 70% | 17.96 | 742 | 22164 | 2.57 | 288.74 | |
| 16 | 80% | 24.59 | 942 | 24696 | 2.39 | 395.05 | |
| 16 | 90% | 32.65 | 1,167 | 26586 | 2.22 | 525.7 | |
| 16 | 100% | 42.89 | 1,414 | 28214 | 2.05 | 690.45 | |
| 51466V2 3B (Gemfan 51466 MCK V2, 3-blade) | 16 | 30% | 3.75 | 243 | 13145 | 4.08 | 60.09 |
| 16 | 40% | 6.37 | 360 | 15420 | 3.52 | 102.35 | |
| 16 | 50% | 9.5 | 499 | 17371 | 3.28 | 152.41 | |
| 16 | 60% | 13.64 | 600 | 19548 | 2.75 | 219.34 | |
| 16 | 70% | 18.53 | 762 | 21821 | 2.56 | 297.78 | |
| 16 | 80% | 25.49 | 940 | 24057 | 2.3 | 409.56 | |
| 16 | 90% | 34.04 | 1,172 | 26219 | 2.14 | 547.31 | |
| 16 | 100% | 44.37 | 1,394 | 27793 | 1.96 | 713.9 | |
| Freestyle 3S 3B (Gemfan Freestyle 3S, 3-blade) | 16 | 30% | 3.61 | 227 | 13039 | 3.94 | 58.04 |
| 16 | 40% | 5.9 | 375 | 15971 | 3.98 | 94.39 | |
| 16 | 50% | 8.81 | 476 | 18256 | 3.38 | 141.54 | |
| 16 | 70% | 16.09 | 771 | 22436 | 2.98 | 258.96 | |
| 16 | 80% | 22.36 | 930 | 25223 | 2.6 | 359.05 | |
| 16 | 90% | 29.83 | 1,173 | 27536 | 2.45 | 479.25 | |
| 16 | 100% | 38.78 | 1,379 | 29546 | 2.21 | 623.53 |
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. 7075 aluminium, silver, with a blue-anodised top cut in what BetaFPV calls a snowflake pattern. (BetaFPV product page, BetaFPV product photo)
- Magnets. Sintered NdFeB N52SH arc magnets. (BetaFPV product page, BetaFPV banner)
- Stator. 23 mm across and 6 mm tall with 12 slots, stacked from 0.15 mm silicon steel; 14 magnet poles. (BetaFPV product page)
- Bearings. NMB bearings. (BetaFPV product page)
- Shaft. 5 mm TC4 titanium alloy with an M5 thread, standing 12.3 mm above the bell. (BetaFPV product page, BetaFPV 1860KV drawing and bench table)
- Base. Four M3 holes evenly spaced on a 16 mm circle. (BetaFPV 1860KV drawing and bench table)
- Leads. 20 AWG wires, 160 mm long. (BetaFPV product page)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1860KV 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 | 27,528 | 3,212 Hz | 19,270 |
| 4S full | 16.8 | 31,248 | 3,646 Hz | 21,874 |
| 6S nominal | 22.2 | 41,292 | 4,817 Hz | 28,904 |
| 6S full | 25.2 | 46,872 | 5,468 Hz | 32,810 |
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 BetaFPV’s published sizes: the 23 × 6 mm stator, 29.3 mm bell, 18.3 mm height, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 magnets. Anything BetaFPV 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
- BETAFPV: Snow 2306 Brushless Motors (product page on BetaFPV's own store, tagged discontinued). Retrieved Oct 19, 2026.
- BETAFPV: Snow 2306 1860KV outline drawing and load performance at 24 V with Gemfan 51433, 51466 V2 and Freestyle 3S three-blade props (image on the product page; the table labels the motor P2306 1860KV and prints the third prop "Frerstyie3S 3B"). Each table's 30% row is left out (see modelNotes).. Retrieved Oct 19, 2026.
- BETAFPV: Snow 2306 2500KV outline drawing and load performance at 16 V with the same three props (image on the product page; the table labels the motor P2306 2500KV). Each table's 20% row and the Freestyle 3S 60% row are left out (see modelNotes).. Retrieved Oct 19, 2026.
- BETAFPV: Snow 2306 banner, "Designed for 5" & 6" Drones", marking the 2500KV for 4S and the 1860KV for 6S (image on the product page). Retrieved Oct 19, 2026.
- BETAFPV: Snow 2306 main product photo, with the side and top views on the same page, used for finish and spoke count. Retrieved Oct 19, 2026.