1S tiny whoop motor
RCinPower EVO 0802
A 1.85 g 0802 in 25000KV for 1S whoops; on RCinPower's 3.7 V bench it pulled 43–53 g per motor at full throttle on four Gemfan whoop props.
- 1S tiny whoops
- Gemfan 1219S, 1220, 1635 and 1636 whoop props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 0802 motor drawn from RCinPower’s published sizes, not its exact design. Thrust, current and power are RCinPower’s bench figures for the Gemfan 1636, 4-blade prop at 3.7 V, read straight across between its throttle steps. Its data starts at 50% throttle.
- Max thrust
- 53 g
- Gemfan 1636, 4-blade prop, 3.7 V
- Weight
- 1.85 g
- with the plug
- Peak current
- 6.4 A
- full throttle
- Max power
- 24 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 1636, 4-blade: 34 g of thrust, 2.9 A, 11 W, 3.51 g per watt.
On your quad
0.3 : 1
Thrust to weight at full throttle: four motors pull 212 g with the Gemfan 1636, 4-blade at 3.7 V.
At 60% throttle they pull 135 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
1.85 g
1.85 g with its plug, on an 8 × 2 mm stator.
Source: RCinPower spec sheet
Most efficient at low current
RCinPower gives over 83% efficiency at 1–2 A.
Source: RCinPower spec sheet
Bench data on four whoop props
Gemfan 1219S, a Gemfan 1220 four-blade, a Gemfan 1635 three-blade and a Gemfan 1636 four-blade at 3.7 V, with the temperature after 3 s at full throttle.
Source: RCinPower spec sheet
What to pair it with
Our reading of RCinPower’s numbers, so your build matches what the motor was tested with.
- ESC
- It drew up to 6.4 A at full throttle on 1S (Gemfan 1636 four-blade, 69 °C), which RCinPower gives as its max current. A 1S whoop board rated for at least 7 A per motor covers it. (RCinPower spec sheet)
- Props
- The Gemfan 1636 four-blade pulled the most, 53 g; the Gemfan 1219S was the most efficient at full throttle and ran coolest (57 °C). (RCinPower spec sheet)
- Battery
- 1S. (RCinPower spec sheet)
- Frame
- Three M1.4 screws on a 6.6 mm circle. (RCinPower spec sheet)
Where to buy
- Unmanned Tech25000KV, the page that shows RCinPower's sheetprice on the store’s pageVisit
- Rotorama25000KVprice on the store’s pageVisit
- Rotor Village25000KVprice 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 | 25,000 rpm/V | RCinPower spec sheet |
| Stator | 8 × 2 mm (0802) | RCinPower spec sheet |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | RCinPower spec sheet |
| Battery | 1S LiPo | RCinPower spec sheet |
| Weight | 1.85 g (with the plug) | RCinPower spec sheet |
| Dimensions | φ11.2 × 8.2 mm (without the shaft) (the drawing gives the diameter as φ11) | RCinPower spec sheet |
| Shaft | 1 mm where it leaves the bell, 1.5 mm inside the motor, protruding 3.3 mm | RCinPower spec sheet |
| Mounting | 3 × M1.4 holes on a 6.6 mm circle | RCinPower spec sheet |
| Internal resistance | 100 mΩ | RCinPower spec sheet |
| No-load current | 0.23 A (at 5 V) | RCinPower spec sheet |
| Max current | 6.4 A (RCinPower labels it 3S, though the motor is for 1S; it is the same as its highest bench reading (Gemfan 1636 four-blade at 3.7 V)) | RCinPower spec sheet |
| Max continuous power | 23.7 W (labelled 3S like the max current; the same as its Gemfan 1636 reading at 3.7 V) | RCinPower spec sheet |
| Leads | soldered to three pads on a board at the base, with a plug (the pads are on the drawing's base view; the weight is given with the plug) | RCinPower spec 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.
25000KV on 1S, 3.7 V4 props
| Prop | Throttle | Current (A) | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|
| Gemfan 1636, 4-blade (GF1636*4)motor at 69 °C | 50% | 2.05 | 29 | 7.6 | 3.823 |
| 100% | 6.4 | 53 | 23.7 | 2.238 | |
| Gemfan 1635, 3-blade (GF1635*3)motor at 67 °C | 50% | 1.95 | 25 | 7.2 | 3.465 |
| 100% | 6.1 | 49 | 22.6 | 2.171 | |
| Gemfan 1220, 4-blade (GF1220*4)motor at 59 °C | 50% | 1.45 | 20 | 5.4 | 3.728 |
| 100% | 5.2 | 45 | 19.2 | 2.339 | |
| Gemfan 1219S (GF1219S)motor at 57 °C | 50% | 1.15 | 17 | 4.3 | 3.995 |
| 100% | 4.6 | 43 | 17 | 2.526 |
Source: RCinPower 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 mm where it leaves the bell, 1.5 mm inside the motor, protruding 3.3 mm. (RCinPower spec sheet)
- Stator. The coils are wound on a stack of thin steel laminations: 8 × 2 mm (0802). (RCinPower spec sheet)
- Base. 3 × M1.4 holes on a 6.6 mm circle. (RCinPower spec sheet)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 25000KV 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 | 370,000 | 37,000 Hz | 222,000 |
| 4S full | 16.8 | 420,000 | 42,000 Hz | 252,000 |
| 6S nominal | 22.2 | 555,000 | 55,500 Hz | 333,000 |
| 6S full | 25.2 | 630,000 | 63,000 Hz | 378,000 |
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 8 × 2 mm stator, 11.2 mm bell, 8.2 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: EVO 0802 25000KV spec sheet (RCinPower's own sheet: spec table, render, drawing, bench tables at 3.7 V with temperatures after 3 s at full throttle). RCinPower's site has no page for this motor; the sheet is mirrored on Unmanned Tech's Shopify CDN and shown on its product page. Retrieved Oct 19, 2026.
- RCinPower: EVO 0802 render, teal and purple (RCinPower's render, mirrored on the same CDN), used for finish. Retrieved Oct 19, 2026.
