1S–2S whoop motor
BetaFPV 08028
A light whoop motor for 1S or 2S: 2.30 g with its plug, made for BetaFPV's 2S Beta75 Pro 2, and sold by BetaFPV as an alternative to its 0802 motors with more power on throttle.
- 75 mm 2S whoops such as the Beta75 Pro 2
- 1S–2S
- 40 mm four-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. No-load speed is KV × 7.4 V, a nominal pack for this version. BetaFPV publishes no bench data for it.
- Weight
- 2.3 g
- with its plug (2.30 g)
from $22.00a motor at BETAFPV
A set of four: $88.00
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $22.00
2.30 g
2.30 g per motor, plug included.
Source: BetaFPV product page
Made for the Beta75 Pro 2
BetaFPV customised it for its Beta75 Pro 2 whoop and rates it for 1S–2S packs.
Source: BetaFPV product page
An 0802 alternative
BetaFPV sells it as an alternative to its 0802 motors, with more power on throttle.
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 F4 2S AIO brushless flight controller. (BetaFPV product page)
- Props
- BetaFPV recommends Gemfan 40 mm four-blade props for a 1.0 mm shaft. (BetaFPV product page)
- Battery
- 1S or 2S (3.7–7.4 V); the Beta75 Pro 2 it was made for runs on 2S. (BetaFPV product page)
- Frame
- BetaFPV names its Beta75 Pro 2 frame; M1.4×3 screws come in the box. (BetaFPV product page)
Where to buy
- BETAFPVthe maker's store; set of 4$22.00seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 12,000 rpm/V | BetaFPV product page |
| Stator | 0802 size (BetaFPV sells the 08028 as an alternative to its 0802 motors and gives no stator dimensions) | BetaFPV product page |
| Battery | 1S–2S LiPo (3.7–7.4 V) | BetaFPV product page |
| Weight | 2.3 g (with its plug (2.30 g)) | BetaFPV product page |
| Dimensions | φ10.7 × 14.9 mm (with shaft) (BetaFPV's spec list also gives a width of 10 mm; its dimension photo shows 10.7 mm) | BetaFPV product page, BetaFPV dimension photo |
| Shaft | 1 mm | BetaFPV dimension photo |
| Mounting | M1.4 screws; three holes in the base (BetaFPV gives no hole spacing; the hole count is read off its base photo) | BetaFPV product page, BetaFPV base photo |
| Leads | 30 mm, Micro JST 1.25 mm 3-pin plug | BetaFPV product page |
| In the box | 4 motors, 1 pack of M1.4×3 screws | BetaFPV product page |
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. Black anodised, like the rest of the motor. (BetaFPV product page)
- Shaft. 1 mm. (BetaFPV product page)
- Leads. Black, 30 mm long, ending in a Micro 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 12000KV 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 | 177,600 | 17,760 Hz | 106,560 |
| 4S full | 16.8 | 201,600 | 20,160 Hz | 120,960 |
| 6S nominal | 22.2 | 266,400 | 26,640 Hz | 159,840 |
| 6S full | 25.2 | 302,400 | 30,240 Hz | 181,440 |
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 0802 stator, 10.7 mm bell and 1 mm shaft. 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: 08028 12000KV Brushless Motors (product page). Retrieved Oct 19, 2026.
- BETAFPV: 08028 dimension photo (image on the product page). Retrieved Oct 19, 2026.
- BETAFPV: 08028 main product photo, used for finish. Retrieved Oct 19, 2026.
- BETAFPV: 08028 base and side photo, used for the number of mounting holes. Retrieved Oct 19, 2026.
