3- to 3.5-inch FPV motor
BrotherHobby Tornado T2 1608
A 1608 for 3S–4S: 16 × 8 mm stator, 12N14P, 22 g with leads and 33 mm tall, on an M5 shaft and a 12 × 12 mm M3 mount.
- 3- to 3.5-inch builds
- 3S–4S
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1608 motor drawn from BrotherHobby’s published sizes, not its exact design. No-load speed is KV × 14.8 V, a nominal pack for this version. BrotherHobby publishes no bench data for it.
- Weight
- 22 g
- with 16 cm wires
from $18.99a motor at BrotherHobby
A set of four: $75.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $18.99
22 g with wires
BrotherHobby gives 22 g with 16 cm wires.
Hollow titanium shaft
A hollow titanium-alloy shaft with an M5 thread, standing 12 mm above a φ20.8 mm bell.
NMB bearings, N52H magnets
Japanese NMB 6 × 3 × 2.5 mm bearings and N52H arc magnets, in a 7075 aluminium bell and base.
What to pair it with
Our reading of BrotherHobby’s numbers, so your build matches what the motor was tested with.
- Battery
- BrotherHobby rates it for 3S–4S. (BrotherHobby product page)
- Frame
- Four M3 holes on a 12 mm circle (12 × 12 mm); the shaft takes props with an M5 nut. (BrotherHobby product page, BrotherHobby drawing)
Where to buy
- BrotherHobbythe maker’s store$18.99seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 3,200 rpm/V (the only KV sold) | BrotherHobby product page |
| Stator | 16 × 8 mm (1608); 0.15 mm Nippon Steel silicon-steel laminations (stator size from the 1608 in BrotherHobby’s name) | BrotherHobby product page, BrotherHobby spec image |
| Configuration | 12N14P (12 stator slots, 14 magnet poles) | BrotherHobby product page, BrotherHobby spec image |
| Battery | 3S–4S LiPo | BrotherHobby product page, BrotherHobby spec image |
| Weight | 22 g (with 16 cm wires) | BrotherHobby product page, BrotherHobby spec image |
| Dimensions | φ20.8 × 33 mm (with shaft); the shaft stands 12 mm above the bell | BrotherHobby drawing |
| Shaft | Hollow titanium alloy, M5 thread (7 mm of thread) | BrotherHobby spec image, BrotherHobby drawing |
| Mounting | 4 × M3 holes on a 12 mm circle (12 × 12 mm) | BrotherHobby product page, BrotherHobby drawing |
| Bell | 7075 aluminium bell cap and base casing | BrotherHobby product page, BrotherHobby spec image |
| Magnets | N52H arc magnets | BrotherHobby product page, BrotherHobby spec image |
| Bearings | NMB (Japan), 6 × 3 × 2.5 mm | BrotherHobby product page, BrotherHobby spec image |
| Leads | 20 AWG silicone, 160 mm, with 2.5 mm tinned ends (gauge from the drawing; the spec list and spec image give 24 AWG) | BrotherHobby drawing, BrotherHobby product page, BrotherHobby spec image |
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 bell cap, φ20.8 mm, with fourteen bars on top. (BrotherHobby product page, BrotherHobby drawing)
- Shaft. Hollow titanium alloy with an M5 thread, standing 12 mm above the bell. (BrotherHobby spec image, BrotherHobby drawing)
- Magnets. N52H arc magnets, 14 poles. (BrotherHobby product page)
- Stator. 16 × 8 mm with 12 slots, in 0.15 mm Nippon Steel silicon steel. (BrotherHobby product page, BrotherHobby spec image)
- Bearings. NMB, 6 × 3 × 2.5 mm. (BrotherHobby product page)
- Base. 7075 aluminium, 5 mm tall, with four M3 holes on a 12 mm circle and 160 mm silicone leads. (BrotherHobby product page, BrotherHobby drawing)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 3200KV 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 | 47,360 | 5,525 Hz | 33,152 |
| 4S full | 16.8 | 53,760 | 6,272 Hz | 37,632 |
| 6S nominal | 22.2 | 71,040 | 8,288 Hz | 49,728 |
| 6S full | 25.2 | 80,640 | 9,408 Hz | 56,448 |
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 BrotherHobby’s published sizes: the 16 × 8 mm stator, 20.8 mm bell, 21 mm height, 5 mm shaft, 12 mm mounting circle and 12 teeth and 14 magnets. Anything BrotherHobby 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
- BrotherHobby: Tornado T2 1608 Motor (CW) (product page on BrotherHobby’s store, with its spec list and photos). Retrieved Oct 19, 2026.
- BrotherHobby: Tornado T2 1608 photos, spec list and outline drawings (image on the product page). Retrieved Oct 19, 2026.
- BrotherHobby: Tornado T2 1608 dimension drawing, with lead gauge and length (image on the Test Data tab of the product page). Retrieved Oct 19, 2026.
