1.8-inch cinewhoop motor
iFlight Defender 16 1103
The 3.3 g motor iFlight has fitted to its sub-250 g Defender 16 cinewhoop since March 2024: 14000KV, rated for 12 V, and 151 g of pull per motor on the Defender 16's 1.8-inch tri-blade on iFlight's bench.
- 1.8-inch cinewhoops, such as iFlight's Defender 16
- 3S (12 V)
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1103 motor drawn from iFlight’s published sizes, not its exact design. Thrust, current and power are iFlight’s bench figures for the Defender 16 1809-3 prop at 12 V, read straight across between its throttle steps. Its data starts at 50% throttle.
- Max thrust
- 151 g
- Defender 16 1809-3 prop, 12 V
- Weight
- 3.3 g
- with wires
- Peak current
- 10.6 A
- full throttle
- Max power
- 122 W
- full throttle
from $13.99a motor at iFlight
A set of four: $55.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What it pulls
iFlight’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.
At 60% with the Defender 16 1809-3: 81 g of thrust, 4.2 A, 50 W, 1.63 g per watt.
On your quad
0.9 : 1
Thrust to weight at full throttle: four motors pull 604 g with the Defender 16 1809-3 at 12 V.
At 60% throttle they pull 324 g, 0.5 times the quad’s weight.
All-up weight is the quad ready to fly, with its battery and camera. The thrust is the maker’s static bench figure; in the air it is lower.
What you get for $13.99
Made for the Defender 16
iFlight designed it for ultralight sub-250 g builds on its Defender 16 frame with a whoop-style AIO board.
Source: iFlight product page
Replaced the 1002
On 5 March 2024 iFlight moved the Defender 16 from its 1002 motor to this 1103 and still sells both. iFlight says the two need different configuration dumps, so don't mix them on one quad.
Source: iFlight product page
3.3 g with wires
On an 11 × 3 mm stator with a φ13.3 mm bell, 9.75 mm tall without the shaft.
Plug-in leads
50 mm, 28 AWG leads ending in an SH1.25 3-pin plug.
Source: iFlight product page
Curved N52H magnets
Arc-shaped N52H magnets, 12 poles on a 9-slot stator, with single-strand windings: 164.7 mΩ between phases.
Source: iFlight product page
What to pair it with
Our reading of iFlight’s numbers, so your build matches what the motor was tested with.
- ESC
- Rated for at least 10.58 A, the peak iFlight measured at full throttle on the Defender 16 tri-blade at about 12 V. (iFlight 1103 test report)
- Props
- iFlight tested it with the Defender 16 1809-3, a 1.8-inch tri-blade with a 0.9-inch pitch: 69 g at half throttle and 151 g at full. (iFlight 1103 test report, iFlight Defender 16 prop page)
- Battery
- iFlight gives 12 V as the input and benched it at 11.5–11.9 V, a 3S pack; the battery it sells for the Defender 16 is a 2S 900 mAh pack. (iFlight product page, iFlight 1103 test report, iFlight Defender 16 battery page)
- Frame
- Three M1.4 holes on a 6.6 mm circle, the Defender 16 frame's motor mount. Four M1.4×3 screws come in the box. (iFlight product page, iFlight 1103 test report)
Where to buy
- iFlightthe maker's store; one motor, 1103 version, CW or CCW mark$13.99seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 14,000 rpm/V (the only KV; the same page still sells the earlier 1002 14000KV) | iFlight product page |
| Stator | 11 × 3 mm (1103) | iFlight product page |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | iFlight product page |
| Battery | 3S LiPo (12 V) (iFlight gives 12 V input for the 1103 and 8 V for the 1002; the battery it sells for the Defender 16 is 2S) | iFlight product page |
| Weight | 3.3 g (with wires) | iFlight product page |
| Dimensions | φ13.3 × 13 mm (with shaft); body 9.75 mm tall | iFlight 1103 test report |
| Shaft | 1.5 mm, protrudes 3.25 mm (the product page says 3.5 mm for both versions) | iFlight 1103 test report |
| Mounting | 3 × M1.4 holes (φ1.4 mm) on a 6.6 mm circle; base plate 1.3 mm (iFlight's table says 6.6*6.6-φ1.4mm (3 mounting holes); its drawing dimensions them as 3-M1.4 on a φ6.6 circle) | iFlight 1103 test report |
| Bell | segmented (iFlight's term) | iFlight product page |
| Magnets | N52H, curved | iFlight product page |
| Bearings | NMB or NSK, φ4 × φ1.5 × 2 mm (the product page lists NMB) | iFlight 1103 test report |
| Winding | single-strand copper | iFlight product page |
| Interphase resistance | 164.7 mΩ | iFlight product page |
| Peak current | 10.58 A (100% throttle, Defender 16 1809-3 prop, 12 V) | iFlight 1103 test report |
| Max power | 121.6 W | iFlight 1103 test report |
| Leads | 28 AWG, 50 mm, with an SH1.25 3-pin plug | iFlight product page |
| In the box | 4 × M1.4×3 screws | iFlight product page |
Bench data
Redrawn from iFlight’s test reports. Thrust is static pull on a bench, more than you get in flight. Power is volts × amps; efficiency is thrust divided by power.
14000KV on 3S, 12 V1 prop
| Prop | Throttle | Voltage (V) | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| Defender 16 1809-3 (1.8-inch, three blades)motor at 86 °C | 50% | 11.88 | 3.23 | 69 | 38.4 | 1.8 |
| 60% | 11.79 | 4.22 | 81 | 49.8 | 1.63 | |
| 70% | 11.71 | 5.81 | 98 | 68 | 1.44 | |
| 80% | 11.62 | 7.46 | 121 | 86.7 | 1.4 | |
| 90% | 11.53 | 8.98 | 136 | 103.5 | 1.31 | |
| 100% | 11.49 | 10.58 | 151 | 121.6 | 1.24 |
Source: iFlight 1103 test report
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. Segmented, in iFlight's words, φ13.3 mm, with four arms across the top. (iFlight 1103 test report)
- Shaft. 1.5 mm, protruding 3.25 mm above the bell; its end also stands out below the base. (iFlight 1103 test report)
- Magnets. Curved N52H magnets, 12 poles. (iFlight product page)
- Stator. 11 × 3 mm with 9 teeth, wound with single-strand copper; 28 AWG leads, 50 mm long, with an SH1.25 plug. (iFlight 1103 test report)
- Bearings. 4 × 1.5 × 2 mm, NMB or NSK. (iFlight 1103 test report)
- Base. 1.3 mm thick, with three M1.4 holes on a 6.6 mm circle; the bell starts 1.7 mm above it. (iFlight 1103 test report)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 14000KV 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 | 207,200 | 20,720 Hz | 124,320 |
| 4S full | 16.8 | 235,200 | 23,520 Hz | 141,120 |
| 6S nominal | 22.2 | 310,800 | 31,080 Hz | 186,480 |
| 6S full | 25.2 | 352,800 | 35,280 Hz | 211,680 |
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 iFlight’s published sizes: the 11 × 3 mm stator, 13.3 mm bell, 9.75 mm height, 1.5 mm shaft, 6.6 mm mounting circle and 9 teeth and 12 magnets. Anything iFlight 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
- iFlight: Defender 16 Motor, 1103 14000KV version (product page with a 1002/1103 version picker and a CW/CCW mark picker). Retrieved Oct 19, 2026.
- iFlight: Defender 16 1103 14000KV test report (spec table, dimension drawing, thrust data). Retrieved Oct 19, 2026.
- iFlight: Defender 16 Prop Set (product page: the 1809-3 is 1.8 inch, 0.9-inch pitch, three blades). Retrieved Oct 19, 2026.
- iFlight: Defender 16 battery (product page: 2S 900 mAh). Retrieved Oct 19, 2026.
