2–3-inch toothpick FPV motor
EMAX RS1106 II
A 6.75 g micro racing motor for 2 to 3-inch props: 11 × 6 mm stator, 9N12P, a 1.5 mm shaft with four M2 prop holes in the bell; 4500KV for 2S–3S, 6000KV and 7500KV for 2S.
- 2 to 3-inch micro racing
- 2S (6000KV, 7500KV) or 2S–3S (4500KV)
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1106 motor drawn from EMAX’s published sizes, not its exact design. No-load speed is KV × 7.4 V, a nominal pack for this version. EMAX publishes no bench data for it.
- Weight
- 6.75 g
- without leads; the 4500KV’s package label says 6.8 g
Plain links: we earn nothing from them.
What you get
6.75 g
6.75 g without leads, 14.2 mm across and 14.5 mm tall without the shaft.
Props on four M2 screws
The bell’s top has four M2 holes, 5 mm apart, for mounting the prop.
Source: EMAX spec sheet
265 g on the 4500KV
The 4500KV’s package label gives a 265 g max thrust, on 2S–3S.
Source: EMAX package label (4500KV)
What to pair it with
Our reading of EMAX’s numbers, so your build matches what the motor was tested with.
- Props
- 2 to 3-inch props, held by four M2 screws 5 mm apart. (EMAX spec sheet)
- Battery
- 2S–3S for the 4500KV; 2S for the 6000KV and 7500KV. EMAX publishes no current figures, so there is no bench guide to the ESC. (EMAX spec sheet)
Where to buy
- EMAXthe maker’s global store; 4500KV, 6000KV and 7500KV, and a 6000KV sold as the Babyhawk Race replacement (all listed as sold out)$10.78seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 6,000 rpm/V (also 4500KV and 7500KV) | EMAX product page, EMAX spec sheet |
| Stator | 11 × 6 mm (1106) | EMAX product page, EMAX spec sheet |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | EMAX spec sheet, EMAX package label (4500KV) |
| Battery | 2S–3S LiPo (4500KV); 2S (6000KV, 7500KV) | EMAX spec sheet |
| Weight | 6.75 g (without leads; the 4500KV’s package label says 6.8 g) | EMAX spec sheet |
| Dimensions | φ14.2 × 18.5 mm (with shaft); the shaft stands 4 mm above the bell | EMAX spec sheet, EMAX package label (4500KV) |
| Shaft | 1.5 mm, stands 4 mm above the bell | EMAX spec sheet |
| Bell | Four M2 holes in the top for the prop, 5 mm apart (EMAX: 5 × 5 mm) | EMAX spec sheet |
| Leads | 100 mm (EMAX gives no wire gauge) | EMAX spec sheet |
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Shaft. 1.5 mm, stands 4 mm above the bell. (EMAX spec sheet)
- Bell. Four M2 holes in the top for the prop, 5 mm apart (EMAX: 5 × 5 mm). (EMAX spec sheet)
- Stator. The coils are wound on a stack of thin steel laminations: 11 × 6 mm (1106). (EMAX product page, EMAX spec sheet)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 6000KV 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 | 88,800 | 8,880 Hz | 53,280 |
| 4S full | 16.8 | 100,800 | 10,080 Hz | 60,480 |
| 6S nominal | 22.2 | 133,200 | 13,320 Hz | 79,920 |
| 6S full | 25.2 | 151,200 | 15,120 Hz | 90,720 |
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 EMAX’s published sizes: the 11 × 6 mm stator, 14.2 mm bell, 14.5 mm height, 1.5 mm shaft and 9 teeth and 12 magnets. Anything EMAX 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
- EMAX: RS1106 II 4500KV 6000KV 7500KV Micro Brushless Motor (product page on EMAX’s global store). Retrieved Oct 19, 2026.
- EMAX: RS1106 II spec sheet (dimension drawing and spec list; image on EMAX’s product page). Retrieved Oct 19, 2026.
- EMAX: RS1106 II 4500KV in its retail bag (photo on EMAX’s product page); the label lists 14.5 mm length, 14.2 mm diameter, 2S–3S, 265 g max thrust and 6.8 g. Retrieved Oct 19, 2026.
