1S tiny whoop motor
RCinPower GTS V3 0702
A 1.5 g 0702 for 1S tiny whoops, pulling 26–31 g per motor at full throttle on RCinPower's 4.2 V bench (27000KV, four props).
- 1S tiny whoops
- 1S (27000KV, 29000KV)
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 0702 motor drawn from RCinPower’s published sizes, not its exact design. Thrust, current and power are RCinPower’s bench figures for the Gemfan 1219, 3-blade prop at 4.2 V, read straight across between its throttle steps. Its data starts at 50% throttle.
- Max thrust
- 31 g
- Gemfan 1219, 3-blade prop, 4.2 V
- Weight
- 1.5 g
- with the plug, both KVs
- Peak current
- 4.1 A
- full throttle
- Max power
- 17 W
- full throttle
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 1219, 3-blade: 22 g of thrust, 3.1 A, 13 W, 1.72 g per watt.
On your quad
0.2 : 1
Thrust to weight at full throttle: four motors pull 124 g with the Gemfan 1219, 3-blade at 4.2 V.
At 60% throttle they pull 89 g, 0.1 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
1.5 g
1.5 g with its plug, for both KVs.
Three-hole base
Three M1.4 holes on a 6.6 mm circle hold it to the frame.
Source: RCinPower 27000KV sheet
Bench data on four whoop props
Gemfan 1210 two-blade, 1208 and 1219 three-blade and 35 mm three-blade props at 4.2 V, with the temperature after 3 s at full throttle.
What to pair it with
Our reading of RCinPower’s numbers, so your build matches what the motor was tested with.
- ESC
- RCinPower rates the 27000KV at 4.2 A and the 29000KV at 4.7 A, the same as their highest bench readings. A whoop board with 5 A ESCs covers both. (RCinPower 27000KV sheet, RCinPower 29000KV sheet)
- Props
- Tested on Gemfan 1210 two-blades, 1208 and 1219 three-blades and a 35 mm three-blade. The 1219 three-blade pulled the most: 31 g (27000KV) and 34 g (29000KV). (RCinPower 27000KV sheet, RCinPower 29000KV sheet)
- Battery
- 1S for both KVs. (RCinPower 27000KV sheet, RCinPower 29000KV sheet)
- Frame
- Three M1.4 screws on a 6.6 mm circle. (RCinPower 27000KV sheet)
Where to buy
- RaceDayQuads27000KV, teal and pinkprice on the store’s pageVisit
- RaceDayQuads29000KV, red and silverprice on the store’s pageVisit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 27,000 rpm/V (also 29000KV) | RCinPower 27000KV sheet |
| Stator | 7 × 2 mm (0702) | RCinPower 27000KV sheet |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | RCinPower 27000KV sheet |
| Battery | 1S LiPo (both KVs) | RCinPower 27000KV sheet, RCinPower 29000KV sheet |
| Weight | 1.5 g (with the plug, both KVs) | RCinPower 27000KV sheet, RCinPower 29000KV sheet |
| Dimensions | φ9.6 × 8.1 mm (without the shaft) | RCinPower 27000KV sheet |
| Shaft | 1.5 mm inside the motor, 1 mm where it leaves the bell, protruding 3.2 mm | RCinPower 27000KV sheet |
| Mounting | Three 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 27000KV sheet |
| Internal resistance | 222 mΩ (210 mΩ for 29000KV) | RCinPower 27000KV sheet |
| No-load current | 0.2 A (at 5 V; 0.25 A for 29000KV) | RCinPower 27000KV sheet |
| Max current | 4.2 A (RCinPower labels it 3S on a 1S motor; it is the same as its highest 27000KV bench reading (Gemfan 35 mm at 4.2 V). 4.7 A for 29000KV) | RCinPower 27000KV sheet |
| Max continuous power | 17.6 W (RCinPower's figure, labelled 3S; 19.7 W for 29000KV) | RCinPower 27000KV sheet |
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.
27000KV on 1S, 4.2 V4 props
| Prop | Throttle | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| Gemfan 1219, 3-blade (GF1219*3)motor at 68 °C | 50% | 2.8 | 20 | 11.8 | 1.701 |
| 100% | 4.1 | 31 | 17.2 | 1.8 | |
| Gemfan 35 mm, 3-blade (GF35mm*3)motor at 69 °C | 50% | 2.7 | 22 | 11.3 | 1.94 |
| 100% | 4.2 | 29 | 17.6 | 1.644 | |
| Gemfan 1210, 2-blade (GF1210*2)motor at 64 °C | 50% | 2.5 | 17 | 10.5 | 1.619 |
| 100% | 3.9 | 27 | 16.4 | 1.648 | |
| Gemfan 1208, 3-blade (GF1208*3)motor at 63 °C | 50% | 2.4 | 16 | 10.1 | 1.587 |
| 100% | 3.8 | 26 | 16 | 1.629 |
Source: RCinPower 27000KV sheet
29000KV on 1S, 4.2 V4 props
| Prop | Throttle | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| Gemfan 1219, 3-blade (GF1219*3)motor at 71 °C | 50% | 3 | 22 | 12.6 | 1.746 |
| 100% | 4.5 | 34 | 18.9 | 1.799 | |
| Gemfan 35 mm, 3-blade (GF35mm*3)motor at 73 °C | 50% | 2.9 | 24 | 12.2 | 1.97 |
| 100% | 4.7 | 32 | 19.7 | 1.621 | |
| Gemfan 1210, 2-blade (GF1210*2)motor at 70 °C | 50% | 2.7 | 19 | 11.3 | 1.675 |
| 100% | 4.3 | 30 | 18.1 | 1.661 | |
| Gemfan 1208, 3-blade (GF1208*3)motor at 68 °C | 50% | 2.6 | 18 | 10.9 | 1.648 |
| 100% | 4.2 | 29 | 17.6 | 1.644 |
Source: RCinPower 29000KV 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 inside the motor, 1 mm where it leaves the bell, protruding 3.2 mm. (RCinPower 27000KV sheet)
- Stator. The coils are wound on a stack of thin steel laminations: 7 × 2 mm (0702). (RCinPower 27000KV sheet)
- Base. Three 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 27000KV sheet)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 27000KV 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 | 399,600 | 39,960 Hz | 239,760 |
| 4S full | 16.8 | 453,600 | 45,360 Hz | 272,160 |
| 6S nominal | 22.2 | 599,400 | 59,940 Hz | 359,640 |
| 6S full | 25.2 | 680,400 | 68,040 Hz | 408,240 |
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 × 2 mm stator, 9.6 mm bell, 8.1 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 0702-27000KV spec sheet (RCinPower's own sheet: spec table, render, drawing, bench table at 4.2 V with temperatures after 3 s at full throttle). RCinPower's site has no page for the 0702; the sheet is mirrored on RaceDayQuads' Shopify CDN and shown on its product page. Retrieved Oct 19, 2026.
- RCinPower: GTS V3 0702-29000KV spec sheet (RCinPower's own sheet, mirrored the same way). Retrieved Oct 19, 2026.
