1S tiny whoop motor
BetaFPV 0802
A 1S whoop motor for BetaFPV's Air75 II: 1.88 g, and 55 g of thrust per motor at full throttle on Gemfan 1614 three-blade props on BetaFPV's bench (Racing, 25000KV).
- 75 mm 1S whoops such as the Air75 II
- 1S (all three versions)
- Gemfan 1614 three-blade props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 0802 motor drawn from BetaFPV’s published sizes, not its exact design. Thrust, current and power are BetaFPV’s bench figures for the GF 1614-3P prop at 3.93 V, read straight across between its throttle steps. Its data starts at 20% throttle.
- Max thrust
- 55 g
- GF 1614-3P prop, 3.93 V
- Weight
- 1.88 g
- Racing and Freestyle; 1.95 g for the Champion
- Peak current
- 8.2 A
- full throttle
- Max power
- 31 W
- full throttle
from $39.99a motor at BETAFPV
A set of four: $159.96
Price seen Oct 19, 2026. 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 GF 1614-3P: 30 g of thrust, 3.6 A, 14 W, 2.13 g per watt.
On your quad
0.3 : 1
Thrust to weight at full throttle: four motors pull 220 g with the GF 1614-3P at 3.93 V.
At 60% throttle they pull 118 g, 0.2 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 $39.99
0.10 mm stator core
BetaFPV says the thinner 0.10 mm laminations cut magnetic losses and heat, for 0.1–0.2 g/W more efficiency than 0802 motors with a 0.15 mm core.
Source: BetaFPV product page
Three tunes
Freestyle (22000KV), Racing (25000KV) and Champion (28000KV), each with its own KV, magnetic circuit and winding.
Source: BetaFPV product page
58.2 g on the Champion
On BetaFPV's 1S bench the Champion reaches 58.2 g at full throttle on Gemfan 1614 props, drawing 9.00 A; the Racing reaches 55 g at 8.15 A.
Source: BetaFPV drawing and bench table
Built for crashes
BetaFPV says it upgraded the rotor housing material and reinforced the shaft to withstand harder impacts.
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 pairs it with its Matrix 1S 5IN1 II flight controller. On its 1S bench the Champion draws up to 9.00 A, the Racing 8.15 A and the Freestyle 5.90 A per motor. (BetaFPV product page, BetaFPV drawing and bench table)
- Props
- BetaFPV recommends Gemfan 1614 three-blade props (1.0 mm shaft); all its bench tests use them. (BetaFPV product page, BetaFPV drawing and bench table)
- Battery
- 1S: BetaFPV rates it for 4.2 V and suggests its LAVA II 1S 480 mAh or 580 mAh packs. (BetaFPV product page)
- Frame
- Three M1.4 screws on a 6.6 mm circle; BetaFPV names its Air75 II and Meteor65 Pro frames. Twelve M1.4×3 screws come in the box. (BetaFPV product page)
Where to buy
- BETAFPVthe maker's store; set of 4: $39.99 Racing or Freestyle, $44.99 Champion$39.99seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 25,000 rpm/V (Racing version; also Champion 28000KV and Freestyle 22000KV) | BetaFPV product page |
| Stator | 8 × 2 mm (0802), 0.10 mm core (size from BetaFPV's name; BetaFPV compares the 0.10 mm core with 0.15 mm cores) | BetaFPV product page |
| Battery | 1S LiPo (rated 4.2 V) | BetaFPV product page |
| Weight | 1.88 g (Racing and Freestyle; 1.95 g for the Champion) | BetaFPV product page |
| Dimensions | φ10.55 × 12.8 mm (with shaft); body 8.8 mm tall | BetaFPV drawing and bench table |
| Shaft | 1.0 mm, protrudes 4.0 mm | BetaFPV product page |
| Mounting | 3 × M1.4 holes, evenly spaced on a 6.6 mm circle | BetaFPV product page |
| Bearings | brass bushings (Racing, Freestyle); dual ball bearings (Champion) | BetaFPV product page |
| Max current | 8.15 A (Racing; 9 A Champion, 5.90 A Freestyle) | BetaFPV product page |
| Max power | 31.15 W (Racing; 34.3 W Champion, 22.73 W Freestyle) | BetaFPV product page |
| Leads | 30 AWG, 35 mm, JST 1.25 mm 3-pin plug | BetaFPV product page |
| In the box | 4 motors, 12 × M1.4×3 screws | 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.
22000KV on 1S, 3.93 V1 prop
| Prop | Voltage (V) | Throttle | Current (A) | Thrust (g) | Efficiency (g/W) | Power (W) | RPM |
|---|---|---|---|---|---|---|---|
| GF 1614-3P (Gemfan 1614, 3-blade) | 3.93 | 20% | 0.27 | 2.3 | 2.21 | 1.04 | 10080 |
| 3.92 | 30% | 0.69 | 7.1 | 2.63 | 2.7 | 16629 | |
| 3.92 | 40% | 1.25 | 12.4 | 2.53 | 4.9 | 22122 | |
| 3.91 | 50% | 1.87 | 18 | 2.46 | 7.31 | 26640 | |
| 3.9 | 60% | 2.48 | 24 | 2.48 | 9.67 | 30692 | |
| 3.89 | 70% | 3.18 | 29.9 | 2.42 | 12.36 | 34253 | |
| 3.88 | 80% | 3.96 | 36.3 | 2.36 | 15.36 | 37649 | |
| 3.87 | 90% | 4.76 | 41.7 | 2.26 | 18.43 | 40563 | |
| 3.86 | 100% | 5.9 | 47.7 | 2.1 | 22.73 | 43292 |
Source: BetaFPV drawing and bench table
25000KV on 1S, 3.93 V1 prop
| Prop | Voltage (V) | Throttle | Current (A) | Thrust (g) | Efficiency (g/W) | Power (W) | RPM |
|---|---|---|---|---|---|---|---|
| GF 1614-3P (Gemfan 1614, 3-blade) | 3.93 | 20% | 0.4 | 3.4 | 2.19 | 1.55 | 11977 |
| 3.92 | 30% | 1.03 | 9.5 | 2.35 | 4.04 | 19704 | |
| 3.91 | 40% | 1.86 | 16.3 | 2.25 | 7.26 | 25026 | |
| 3.9 | 50% | 2.7 | 22.9 | 2.17 | 10.53 | 29812 | |
| 3.88 | 60% | 3.58 | 29.6 | 2.13 | 13.89 | 33859 | |
| 3.87 | 70% | 4.56 | 36.8 | 2.08 | 17.65 | 37678 | |
| 3.86 | 80% | 5.66 | 43.3 | 1.98 | 21.84 | 41072 | |
| 3.84 | 90% | 6.75 | 49.2 | 1.89 | 25.98 | 43874 | |
| 3.82 | 100% | 8.15 | 55 | 1.77 | 31.15 | 46481 |
Source: BetaFPV drawing and bench table
28000KV on 1S, 3.93 V1 prop
| Prop | Voltage (V) | Throttle | Current (A) | Thrust (g) | Efficiency (g/W) | Power (W) | RPM |
|---|---|---|---|---|---|---|---|
| GF 1614-3P (Gemfan 1614, 3-blade) | 3.93 | 20% | 0.45 | 4.1 | 2.33 | 1.76 | 12533 |
| 3.92 | 30% | 1.17 | 10 | 2.19 | 4.58 | 19627 | |
| 3.9 | 40% | 2.11 | 17.2 | 2.08 | 8.25 | 25700 | |
| 3.89 | 50% | 3.06 | 24.2 | 2.03 | 11.91 | 30500 | |
| 3.88 | 60% | 4.04 | 31 | 1.98 | 15.67 | 34632 | |
| 3.86 | 70% | 5.16 | 38.5 | 1.93 | 19.94 | 38552 | |
| 3.85 | 80% | 6.35 | 45.7 | 1.87 | 24.42 | 42097 | |
| 3.83 | 90% | 7.52 | 51.8 | 1.8 | 28.82 | 45134 | |
| 3.81 | 100% | 9 | 58.2 | 1.7 | 34.3 | 47888 |
Source: BetaFPV drawing and bench table
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. Polished silver; the top and base are anodised purple on the Racing, orange on the Champion and cyan on the Freestyle. BetaFPV says the rotor housing material was upgraded for crash durability. (BetaFPV product page)
- Stator. 0.10 mm laminations, against the 0.15 mm of earlier 0802 motors. (BetaFPV product page)
- Bearings. Brass bushings on the Racing and Freestyle, dual ball bearings on the Champion. (BetaFPV product page)
- Shaft. 1.0 mm, standing 4.0 mm above the bell. (BetaFPV product page)
- Base. Three M1.4 holes evenly spaced on a 6.6 mm circle. (BetaFPV product page)
- Leads. Three 30 AWG wires, 35 mm long, ending in a JST 1.25 mm three-pin plug. (BetaFPV product page)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 25000KV 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 | 370,000 | 37,000 Hz | 222,000 |
| 4S full | 16.8 | 420,000 | 42,000 Hz | 252,000 |
| 6S nominal | 22.2 | 555,000 | 55,500 Hz | 333,000 |
| 6S full | 25.2 | 630,000 | 63,000 Hz | 378,000 |
A 12-pole rotor has 6 pole pairs, so every turn of the shaft is 6 electrical cycles, and a six-step ESC switches the phases 36 times per turn.
About the 3D model
A generic outrunner drawn from BetaFPV’s published sizes: the 8 × 2 mm stator, 10.55 mm bell, 8.8 mm height, 1 mm shaft and 6.6 mm mounting circle. 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: 0802 Brushless Motors (2026) (product page). Retrieved Oct 19, 2026.
- BETAFPV: 0802 Champion / Racing / Freestyle outline drawing and load performance table (image on the product page). The bench voltage falls from 3.93 V to 3.81–3.86 V across the throttle steps; each table's voltage is its 20% row.. Retrieved Oct 19, 2026.
- BETAFPV: 0802 (2026) product photo of the Racing version, used for finish. Retrieved Oct 19, 2026.
