7-inch FPV motor
Diatone Mamba TOKA 2808
A 28 × 8 mm motor for 7-inch props on 4S–6S, 63.5 g, with a 6 mm shaft stepping down to 5 mm for the prop; Diatone sold it for its Roma F7.
- 7-inch quads such as Diatone's Roma F7
- 4S–6S
- 16 × 16 mm M3 motor mounts
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2808 motor drawn from Diatone’s published sizes, not its exact design. No-load speed is KV × 22.2 V, a nominal pack for this version. Diatone publishes no bench data for it.
- Weight
- 63.5 g
from $34.99a motor at MyFPVStore
A set of four: $139.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $34.99
Made for the Roma F7
Diatone sold it as the motor for its Roma F7 quad.
Source: Diatone product page (archived)
Two bearing sizes
A 13 × 6 × 5 mm bearing at the bottom and a 10 × 6 × 4 mm one at the top carry a 6 mm shaft.
Source: Diatone product page (archived)
38.7 A peak
Diatone lists a 38.7 A peak current and 862.5 W maximum power.
Source: Diatone product page (archived)
240 °C windings
Diatone lists 240 °C enamelled wire for the windings.
Source: Diatone product page (archived)
What to pair it with
Our reading of Diatone’s numbers, so your build matches what the motor was tested with.
- ESC
- Diatone's peak current is 38.7 A; a 45 A ESC leaves headroom. (Diatone product page (archived))
- Props
- 7-inch. (Diatone product page (archived))
- Battery
- 4S–6S. (Diatone product page (archived))
- Frame
- 16 × 16 mm mount with M3 screws. (Diatone product page (archived))
Where to buy
- MyFPVStore1100KV$34.99seen Oct 19, 2026Visit
- Rotorama1100KVprice on the store’s pageVisit
- GetFPV1100KV; out of stock, filed under Discontinued$36.49seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 1,100 rpm/V (one KV) | Diatone product page (archived) |
| Stator | 28 × 8 mm (2808) | Diatone product page (archived) |
| Configuration | 12N14P (12 stator slots, 14 magnet poles) | Diatone product page (archived) |
| Battery | 4S–6S LiPo (16.8–25.2 V) | Diatone product page (archived) |
| Weight | 63.5 g | Diatone product page (archived) |
| Dimensions | Φ35.1 × 40.3 mm | Diatone product page (archived) |
| Shaft | 5 mm where the prop mounts, 6 mm inside the motor | Diatone product page (archived) |
| Mounting | 16 × 16 mm, M3 | Diatone product page (archived) |
| Bearings | 13 × 6 × 5 mm at the bottom, 10 × 6 × 4 mm at the top | Diatone product page (archived) |
| Winding | 240 °C enamelled wire | Diatone product page (archived) |
| Internal resistance | 68 mΩ | Diatone product page (archived) |
| Idle current | 1.2 A | Diatone product page (archived) |
| Peak current | 38.7 A | Diatone product page (archived) |
| Max power | 862.5 W | Diatone product page (archived) |
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Shaft. 5 mm where the prop mounts, 6 mm inside the motor. (Diatone product page (archived))
- Stator. The coils are wound on a stack of thin steel laminations: 28 × 8 mm (2808). (Diatone product page (archived))
- Winding. 240 °C enamelled wire. (Diatone product page (archived))
- Bearings. 13 × 6 × 5 mm at the bottom, 10 × 6 × 4 mm at the top. (Diatone product page (archived))
- Base. 16 × 16 mm, M3. (Diatone product page (archived))
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1100KV 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 | 16,280 | 1,899 Hz | 11,396 |
| 4S full | 16.8 | 18,480 | 2,156 Hz | 12,936 |
| 6S nominal | 22.2 | 24,420 | 2,849 Hz | 17,094 |
| 6S full | 25.2 | 27,720 | 3,234 Hz | 19,404 |
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 Diatone’s published sizes: the 28 × 8 mm stator, 35.1 mm bell, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 magnets. Anything Diatone 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. There are no logos or markings: it is our drawing, not the maker’s.
Sources
- Diatone: MAMBA TOKA 2808 1100KV Racing Motor For Roma F7 (product page on Diatone's own store, Wayback Machine copy captured 2023-11-29). Retrieved Oct 19, 2026.
- Diatone: MAMBA 2808 1100KV Racing Motor For Roma F7 (the same listing today, read through r.jina.ai: it now shows the KN2808, but its text still describes the TOKA 2808 1100KV). Retrieved Oct 19, 2026.