1S tiny whoop motor
RCinPower GTS V3 0703
A 1.85 g 0703 RCinPower made for small indoor racing quads on 1S; at 4.2 V the 23000KV pulled 37–43 g per motor at full throttle on five whoop props, the 27000KV 42–49 g.
- 1S tiny whoops and small indoor racers
- 1S (23000KV, 27000KV)
- 31 mm (1.2-inch) to 40 mm props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 0703 motor drawn from RCinPower’s published sizes, not its exact design. Thrust, current and power are RCinPower’s bench figures for the Gemfan 35 mm, 4-blade prop at 4.2 V, read straight across between its throttle steps. Its data starts at 50% throttle.
- Max thrust
- 43 g
- Gemfan 35 mm, 4-blade prop, 4.2 V
- Weight
- 1.85 g
- with the plug, both KVs; RCinPower's scale photo shows 1.93 g with leads (S3)
- Peak current
- 5.2 A
- full throttle
- Max power
- 22 W
- full throttle
from $15.99a motor at RaceDayQuads
A set of four: $63.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What it pulls
RCinPower’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.
At 60% with the Gemfan 35 mm, 4-blade: 34 g of thrust, 3.9 A, 16 W, 2.09 g per watt.
On your quad
0.3 : 1
Thrust to weight at full throttle: four motors pull 172 g with the Gemfan 35 mm, 4-blade at 4.2 V.
At 60% throttle they pull 137 g, 0.2 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 $15.99
For small indoor racers
RCinPower made the GTS V3 0703 in 2024 for small indoor FPV racing quads and recommends 1.2-inch props.
Source: RCinPower photos and text
Two bearings, one-piece housing
RCinPower says the one-piece housing is strong and durable, and that the two bearings give a longer life and steadier running.
Source: RCinPower photos and text
Leads on a PCB, 1.25 mm plug
The leads are soldered to a PCB, which RCinPower says makes them durable and easy to repair, and a 1.25 mm plug fits most AIO boards.
1.85 g
1.85 g with its plug in both spec tables; RCinPower's scale photo shows 1.93 g with leads.
Source: RCinPower spec sheets, RCinPower photos 2
Bench data on five whoop props
Gemfan 1219 and 35 mm three-blades, 1220 and 35 mm four-blades and a 1635 three-blade at 4.2 V, with the temperature after 3 s at full throttle.
Source: RCinPower spec sheets
What to pair it with
Our reading of RCinPower’s numbers, so your build matches what the motor was tested with.
- ESC
- On RCinPower's 4.2 V bench the 23000KV peaked at 5.9 A and the 27000KV at 6.8 A, both on the Gemfan 1635; RCinPower rates them the same. A whoop AIO rated for at least 7 A per motor covers both. (RCinPower spec sheets)
- Props
- At full throttle the 35 mm props pulled as much as the 40 mm Gemfan 1635 on less current, and the 35 mm four-blade was the most efficient at 50% throttle. The 1635 ran hottest (76 °C on the 23000KV, 79 °C on the 27000KV). (RCinPower spec sheets)
- Battery
- 1S for both KVs; RCinPower tested them at 4.2 V. (RCinPower spec sheets)
- Frame
- Three M1.4 screws on a 6.6 mm circle. (RCinPower spec sheets)
Where to buy
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 23,000 rpm/V (also 27000KV) | RCinPower spec sheets |
| Stator | 7 × 3 mm (0703) | RCinPower spec sheets |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | RCinPower spec sheets |
| Battery | 1S LiPo (both KVs) | RCinPower spec sheets |
| Weight | 1.85 g (with the plug, both KVs; RCinPower's scale photo shows 1.93 g with leads (S3)) | RCinPower spec sheets |
| Dimensions | φ9.6 × 9.6 mm (the drawing gives 9.3 mm from the base to the top of the bell) | RCinPower spec sheets |
| Shaft | 1 mm where it leaves the bell, 1.5 mm inside the motor, standing 3.8 mm above the bell | RCinPower spec sheets |
| Mounting | 3 × M1.4 holes on a 6.6 mm circle (the drawing's label says 4 × M1.4, but its base view shows three holes) | RCinPower spec sheets |
| Bearings | two | RCinPower photos and text |
| Internal resistance | 206 mΩ (175 mΩ for 27000KV) | RCinPower spec sheets |
| No-load current | 0.2 A (at 5 V; 0.3 A for 27000KV) | RCinPower spec sheets |
| Max current | 5.9 A (RCinPower labels it 3S; it is the same as its highest bench reading (Gemfan 1635 three-blade at 4.2 V). 6.8 A for 27000KV, also its highest reading) | RCinPower spec sheets |
| Max continuous power | 24.8 W (RCinPower labels it 3S; it matches the same reading. 28.6 W for 27000KV) | RCinPower spec sheets |
| Leads | soldered to a PCB at the base, with a 1.25 mm plug | RCinPower photos and text, RCinPower photos 2 |
Bench data
Redrawn from RCinPower’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.
23000KV on 1S, 4.2 V5 props
| Prop | Throttle | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| Gemfan 35 mm, 4-blade (GF35mm*4)motor at 72 °C | 50% | 3.6 | 32 | 15.1 | 2.116 |
| 100% | 5.2 | 43 | 21.8 | 1.969 | |
| Gemfan 35 mm, 3-blade (GF35mm*3)motor at 70 °C | 50% | 3.6 | 29 | 15.1 | 1.918 |
| 100% | 5 | 42 | 21 | 2 | |
| Gemfan 1635, 3-blade (GF1635*3)motor at 76 °C | 50% | 4.3 | 31 | 18.1 | 1.717 |
| 100% | 5.9 | 42 | 24.8 | 1.695 | |
| Gemfan 1220, 4-blade (GF1220*4)motor at 68 °C | 50% | 3.2 | 23 | 13.4 | 1.711 |
| 100% | 4.8 | 39 | 20.2 | 1.935 | |
| Gemfan 1219, 3-blade (GF1219*3)motor at 67 °C | 50% | 3.1 | 22 | 13 | 1.69 |
| 100% | 4.7 | 37 | 19.7 | 1.874 |
Source: RCinPower spec sheets
27000KV on 1S, 4.2 V5 props
| Prop | Throttle | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| Gemfan 35 mm, 4-blade (GF35mm*4)motor at 75 °C | 50% | 4.1 | 37 | 17.2 | 2.149 |
| 100% | 6 | 49 | 25.2 | 1.944 | |
| Gemfan 1635, 3-blade (GF1635*3)motor at 79 °C | 50% | 4.9 | 36 | 20.6 | 1.749 |
| 100% | 6.8 | 49 | 28.6 | 1.716 | |
| Gemfan 35 mm, 3-blade (GF35mm*3)motor at 73 °C | 50% | 4.1 | 33 | 17.2 | 1.916 |
| 100% | 5.7 | 48 | 23.9 | 2.005 | |
| Gemfan 1220, 4-blade (GF1220*4)motor at 71 °C | 50% | 3.7 | 26 | 15.5 | 1.673 |
| 100% | 5.5 | 45 | 23.1 | 1.948 | |
| Gemfan 1219, 3-blade (GF1219*3)motor at 70 °C | 50% | 3.6 | 25 | 15.1 | 1.653 |
| 100% | 5.4 | 42 | 22.7 | 1.852 |
Source: RCinPower spec sheets
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bearings. Two bearings in a one-piece housing. (RCinPower photos and text)
- Leads. Soldered to a PCB at the base, with a 1.25 mm plug. (RCinPower photos and text, RCinPower photos 2)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 23000KV 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 | 340,400 | 34,040 Hz | 204,240 |
| 4S full | 16.8 | 386,400 | 38,640 Hz | 231,840 |
| 6S nominal | 22.2 | 510,600 | 51,060 Hz | 306,360 |
| 6S full | 25.2 | 579,600 | 57,960 Hz | 347,760 |
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 RCinPower’s published sizes: the 7 × 3 mm stator, 9.6 mm bell, 9.3 mm height, 1 mm shaft, 6.6 mm mounting circle and 9 teeth and 12 magnets. Anything RCinPower 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
- RCinPower: GTS V3 0703 (product page; its content is three images with photos, text in Chinese, the spec tables, dimension drawings and bench data). Retrieved Oct 19, 2026.
- RCinPower: GTS V3 0703 photos and text in Chinese (first image on the product page: the main product photo of the teal-and-pink and red versions, and what it is made for: small indoor racing quads, 1.2-inch props, two bearings, leads soldered to a PCB, 1.85 g). Retrieved Oct 19, 2026.
- RCinPower: GTS V3 0703 photos (second image on the product page: the 1.25 mm plug, and a scale photo at 1.93 g with leads). Retrieved Oct 19, 2026.
- RCinPower: GTS V3 0703-23000KV and 0703-27000KV spec sheets (third image on the product page: spec tables, drawings and bench tables at 4.2 V, with temperatures after 3 s at full throttle). Retrieved Oct 19, 2026.
