1S nano freestyle motor
Hypetrain BB's 0802
Bubby FPV’s 1S motor for nano freestyle builds: 0802 at 29700KV, 2 g, rated 7.3 A continuous, sold four to a tin in five colours.
- 1S nano freestyle
- the Bubito frame
- 6.6 mm motor mounts
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 Hypetrain’s published sizes, not its exact design. No-load speed is KV × 3.7 V, a nominal pack for this version. Hypetrain publishes no bench data for it.
- Weight
- 2 g
Plain links: we earn nothing from them.
What you get
Made for 1S nano freestyle
Hypetrain made the BB’s for 1S nano freestyle builds and matches them to Bubby FPV’s Bubito frame.
Source: Hypetrain product page
2 g, 7.3 A continuous
An 0802 stator at 29700KV, 2 g, with 90 mΩ internal resistance and a 7.3 A max continuous current.
Source: Hypetrain product page
Five colours, four to a tin
Powerloop Plum, Look-Back Lime, Bandoberry Blue, Pineapple Dive and Strawberry Skids, packed four to a metal “Candy Box” tin with screws and stickers.
Source: Hypetrain product page
What to pair it with
Our reading of Hypetrain’s numbers, so your build matches what the motor was tested with.
- Battery
- 1S LiPo; the 45 mm leads end in a JST-1.25 plug. (Hypetrain product page)
- Frame
- A 6.6 mm mount pattern; Hypetrain matches the motor to the Bubito frame. (Hypetrain product page)
- Props
- A 1 mm shaft, so press-fit props for 1 mm shafts. (Hypetrain product page)
Where to buy
- Rotor RiotHypetrain’s own store; 4-pack of one colour, or $56.99 for a random mix; every option listed as sold out$49.99seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 29,700 rpm/V | Hypetrain product page |
| Stator | 8 × 2 mm (0802) | Hypetrain product page |
| Battery | 1S LiPo | Hypetrain product page |
| Weight | 2 g | Hypetrain product page |
| Dimensions | 11 × 13 mm (Hypetrain doesn’t say which figure is the diameter and which the height) | Hypetrain product page |
| Shaft | 1 mm | Hypetrain product page |
| Mounting | 6.6 mm pattern | Hypetrain product page |
| Internal resistance | 90 mΩ | Hypetrain product page |
| Max continuous current | 7.3 A | Hypetrain product page |
| Leads | 45 mm, JST-1.25 plug | Hypetrain product page |
| In the box | 4 motors, 4 screw sets, 4 BB’s stickers and a metal tin | Hypetrain 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:
- Shaft. 1 mm. (Hypetrain product page)
- Stator. The coils are wound on a stack of thin steel laminations: 8 × 2 mm (0802). (Hypetrain product page)
- Base. 6.6 mm pattern. (Hypetrain product page)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 29700KV 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 | 439,560 | 43,956 Hz | 263,736 |
| 4S full | 16.8 | 498,960 | 49,896 Hz | 299,376 |
| 6S nominal | 22.2 | 659,340 | 65,934 Hz | 395,604 |
| 6S full | 25.2 | 748,440 | 74,844 Hz | 449,064 |
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 Hypetrain’s published sizes: the 8 × 2 mm stator, 1 mm shaft and 6.6 mm mounting circle. Anything Hypetrain 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.