1S tiny whoop motor
BetaFPV 1102
A light 1S whoop motor for 75 mm frames: 2.79 g, and 46.3 g of thrust per motor with Gemfan 1635 three-blade props on BetaFPV's 4 V bench (22000KV).
- 75 mm 1S whoops
- 1S (18000KV, 22000KV) or 2S (14000KV)
- 40 mm three-blade props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1102 motor drawn from BetaFPV’s published sizes, not its exact design. No-load speed is KV × 3.7 V, a nominal pack for this version. BetaFPV’s bench tables for it step by thrust rather than throttle, so they are in the bench data below, not on this readout.
- Weight
- 2.79 g
- 22000KV; 2.95 g for the 18000KV. BetaFPV's scale photo weighs it with its lead and plug.
from $39.99a motor at BETAFPV
A set of four: $159.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $39.99
2.79 g
BetaFPV weighs the 22000KV at 2.79 g and the 18000KV at 2.95 g per motor.
Source: BetaFPV product page
Two KVs for 1S
18000KV for cruising and flight time, 22000KV for racing: 40.6 g against 46.3 g of thrust on the same Gemfan 1635 props at 4 V.
Source: BetaFPV product page
Ball bearings
BetaFPV says the ball bearings cut friction and raise efficiency, and calls them crush-resistant and damped.
Source: BetaFPV product page
Repairable leads
The lead wires are soldered to a small board on the base, so a wire that breaks off can be soldered back.
Source: BetaFPV product page
Balanced
Dynamically balanced, which BetaFPV says cuts vibration.
Source: BetaFPV product page
What to pair it with
Our reading of BetaFPV’s numbers, so your build matches what the motor was tested with.
- ESC
- BetaFPV pairs it with its F4 1S 5A and F4 1S 12A AIO flight controllers. On its 4 V bench the 22000KV draws up to 6.8 A per motor and the 18000KV 4.8 A. (BetaFPV product page, BetaFPV drawing and bench tables)
- Props
- BetaFPV recommends 40 mm three-blade props. Its bench also runs the 22000KV on Gemfan 1636 four-blade, 45 mm two- and three-blade, and 2015 two-blade props; with the 2015 it reaches 53.7 g. (BetaFPV product page, BetaFPV drawing and bench tables)
- Battery
- 1S for the 18000KV and 22000KV (BetaFPV suggests its BT2.0 450mAh 1S). The 14000KV was tested on 8 V, a 2S pack. (BetaFPV product page, BetaFPV drawing and bench tables)
- Frame
- Three M1.4 screws on a 6.6 mm circle; BetaFPV names its Meteor75 frame. A pack of M1.4×4 screws comes in the box. (BetaFPV product page, BetaFPV drawing and bench tables)
Where to buy
- BETAFPVthe maker's store; set of 4, same price for every KV$39.99seen Oct 19, 2026Visit
- Pyrodrone22000KV, blueprice on the store’s pageVisit
- WREKD22000KV (2022 version)price 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 | 22,000 rpm/V (also 18000KV and 14000KV) | BetaFPV product page |
| Stator | 11 × 2 mm (1102) (from the size in BetaFPV's name) | BetaFPV product page |
| Battery | 1S LiPo (for the 18000KV and 22000KV; BetaFPV gives no battery for the 14000KV and tested it on 8 V) | BetaFPV product page |
| Weight | 2.79 g (22000KV; 2.95 g for the 18000KV. BetaFPV's scale photo weighs it with its lead and plug.) | BetaFPV product page |
| Dimensions | φ13.8 × 13.6 mm (with shaft); body 8.6 mm tall (2022 version; BetaFPV lists the earlier all-black 18000KV as 15.2 mm tall) | BetaFPV drawing and bench tables |
| Shaft | 1.5 mm, protrudes 5 mm | BetaFPV product page |
| Mounting | 3 × M1.4 holes, evenly spaced on a 6.6 mm circle | BetaFPV drawing and bench tables |
| Bearings | ball bearings | BetaFPV product page |
| Leads | 3 × 28 AWG, 37 mm, Micro JST 1.25 mm 3-pin plug (the first 18000KV was also sold with 50 mm leads) | BetaFPV product page |
| In the box | 4 motors, 1 pack of M1.4×4 screws | BetaFPV product page |
Bench data
Redrawn from BetaFPV’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 2S, 8 V4 props
| Prop | Step | Current (A) | Power (W) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|
| GF-45mm-2P (Gemfan 45 mm; the first of two tables BetaFPV labels this way) | 2 | 16 | 39.7 | 2.48 | |
| 3 | 24 | 57.2 | 2.38 | ||
| 4 | 32 | 72.1 | 2.25 | ||
| 5 | 40 | 83 | 2.08 | ||
| 6 | 48 | 95 | 1.98 | ||
| 7 | 56 | 105 | 1.88 | ||
| 8 | 64 | 114 | 2.7 | ||
| 9.1 | 72.8 | 122 | 2.06 | ||
| GF-45mm-2P (Gemfan 45 mm; the second of two tables BetaFPV labels this way) | 2 | 16 | 38 | 2.38 | |
| 3 | 24 | 55 | 2.29 | ||
| 4 | 32 | 67.6 | 2.11 | ||
| 5 | 40 | 78 | 1.95 | ||
| 6 | 48 | 89 | 1.85 | ||
| 7 | 56 | 100 | 1.79 | ||
| 8 | 64 | 107 | 1.67 | ||
| 9.1 | 72.8 | 114 | 1.57 | ||
| 10.1 | 80.8 | 121 | 1.5 | ||
| GF1608-4P (Gemfan 1608) | 2 | 16 | 37.5 | 2.34 | |
| 3 | 24 | 53 | 2.21 | ||
| 4 | 32 | 63.3 | 1.98 | ||
| 5 | 40 | 76.1 | 1.9 | ||
| 6 | 48 | 85.8 | 1.79 | ||
| 7 | 56 | 93.7 | 1.67 | ||
| 8 | 64 | 102 | 1.59 | ||
| 9 | 72 | 108.8 | 1.51 | ||
| 10 | 80 | 114 | 1.43 | ||
| GF1608-3P (Gemfan 1608) | 2 | 16 | 36.6 | 2.29 | |
| 3 | 24 | 50.3 | 2.1 | ||
| 4 | 32 | 62.5 | 1.95 | ||
| 5 | 40 | 74.6 | 1.87 | ||
| 6 | 48 | 83.5 | 1.74 | ||
| 7 | 56 | 93.2 | 1.66 | ||
| 8 | 64 | 102 | 1.59 | ||
| 9.5 | 76 | 112.7 | 1.48 |
Source: BetaFPV drawing and bench tables
18000KV on 1S, 4 V1 prop
| Prop | Step | Current (A) | Power (W) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|
| GF-1635-3B (Gemfan 1635, 3-blade) | 0.5 | 2 | 5.1 | 2.55 | |
| 1 | 4 | 10.3 | 2.58 | ||
| 1.5 | 6 | 13.8 | 2.3 | ||
| 2 | 8 | 17.9 | 2.24 | ||
| 2.5 | 10 | 22.7 | 2.27 | ||
| 3 | 12 | 27.7 | 2.31 | ||
| 3.5 | 14 | 32 | 2.29 | ||
| 4 | 16 | 35.7 | 2.23 | ||
| 4.5 | 18 | 39 | 2.17 | ||
| 4.8 | 19.2 | 40.6 | 2.11 |
Source: BetaFPV drawing and bench tables
22000KV on 1S, 4 V5 props
| Prop | Step | Current (A) | Power (W) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|
| GF-2015-2B (Gemfan 2015, 2-blade) | 0.5 | 2 | 6.9 | 3.45 | |
| 1 | 4 | 12.5 | 3.13 | ||
| 1.5 | 6 | 15.4 | 2.57 | ||
| 2 | 8 | 18 | 2.25 | ||
| 2.5 | 10 | 22.4 | 2.24 | ||
| 3 | 12 | 27.6 | 2.3 | ||
| 3.5 | 14 | 32 | 2.29 | ||
| 4 | 16 | 35.5 | 2.22 | ||
| 4.5 | 18 | 39.8 | 2.21 | ||
| 5 | 20 | 44 | 2.2 | ||
| 5.5 | 22 | 47.8 | 2.17 | ||
| 6 | 24 | 50.3 | 2.1 | ||
| 6.5 | 26 | 52.8 | 2.03 | ||
| 6.6 | 26.4 | 53.7 | 2.03 | ||
| GF-45mm-3B (Gemfan 45 mm, 3-blade) | 0.5 | 2 | 6.2 | 3.1 | |
| 1 | 4 | 10.8 | 2.7 | ||
| 1.5 | 6 | 13.9 | 2.32 | ||
| 2 | 8 | 16.5 | 2.06 | ||
| 2.5 | 10 | 20 | 2 | ||
| 3 | 12 | 25 | 2.08 | ||
| 3.5 | 14 | 28.6 | 2.04 | ||
| 4 | 16 | 32.9 | 2.06 | ||
| 4.5 | 18 | 36.6 | 2.03 | ||
| 5 | 20 | 40.1 | 2.01 | ||
| 5.5 | 22 | 43.1 | 1.96 | ||
| 6 | 24 | 45.9 | 1.91 | ||
| 6.5 | 26 | 48.1 | 1.85 | ||
| 6.8 | 27.2 | 49.6 | 1.82 | ||
| GF-45mm-2B (Gemfan 45 mm, 2-blade) | 0.5 | 2 | 5.7 | 2.85 | |
| 1 | 4 | 10.8 | 2.7 | ||
| 1.5 | 6 | 13.5 | 2.25 | ||
| 2 | 8 | 16.2 | 2.03 | ||
| 2.5 | 10 | 21.1 | 2.11 | ||
| 3 | 12 | 26.2 | 2.18 | ||
| 3.5 | 14 | 30.1 | 2.15 | ||
| 4 | 16 | 34.6 | 2.16 | ||
| 4.5 | 18 | 38.8 | 2.16 | ||
| 5 | 20 | 42.6 | 2.13 | ||
| 5.5 | 22 | 45.5 | 2.07 | ||
| 6 | 24 | 48.2 | 2.01 | ||
| 6.3 | 25.2 | 49.6 | 1.97 | ||
| GF-1636-4B (Gemfan 1636, 4-blade) | 0.5 | 2 | 5.6 | 2.8 | |
| 1 | 4 | 10.9 | 2.73 | ||
| 1.5 | 6 | 13.2 | 2.2 | ||
| 2 | 8 | 15.8 | 1.98 | ||
| 2.5 | 10 | 20 | 2 | ||
| 3 | 12 | 23.6 | 1.97 | ||
| 3.5 | 14 | 27.9 | 1.99 | ||
| 4 | 16 | 31.8 | 1.99 | ||
| 4.5 | 18 | 35.6 | 1.98 | ||
| 5 | 20 | 39.6 | 1.98 | ||
| 5.5 | 22 | 42.5 | 1.93 | ||
| 6 | 24 | 44.9 | 1.87 | ||
| 6.5 | 26 | 47.5 | 1.83 | ||
| 6.7 | 26.8 | 48.4 | 1.81 | ||
| GF-1635-3B (Gemfan 1635, 3-blade) | 0.5 | 2 | 5 | 2.5 | |
| 1 | 4 | 9.9 | 2.48 | ||
| 1.5 | 6 | 12.3 | 2.05 | ||
| 2 | 8 | 15.3 | 1.91 | ||
| 2.5 | 10 | 19.2 | 1.92 | ||
| 3 | 12 | 23.3 | 1.94 | ||
| 3.5 | 14 | 27.9 | 1.99 | ||
| 4 | 16 | 32.2 | 2.01 | ||
| 4.5 | 18 | 36.6 | 2.03 | ||
| 5 | 20 | 40.9 | 2.05 | ||
| 5.5 | 22 | 43.5 | 1.98 | ||
| 6.1 | 24.4 | 46.3 | 1.9 |
Source: BetaFPV drawing and bench tables
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. Black with a red top on the 2022 version; the 22000KV also comes in blue. The first 18000KV is all black and 15.2 mm tall against 13.6 mm. (BetaFPV product page)
- Shaft. 1.5 mm, standing 5 mm above the bell. (BetaFPV product page)
- Bearings. Ball bearings, which BetaFPV calls crush-resistant and damped. (BetaFPV product page)
- Base. Three M1.4 holes evenly spaced on a 6.6 mm circle. The leads are soldered to a small board on the base. (BetaFPV product page)
- Leads. Three 28 AWG wires, 37 mm long, ending in a Micro JST 1.25 mm three-pin plug. (BetaFPV product page)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 22000KV 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 | 325,600 | 32,560 Hz | 195,360 |
| 4S full | 16.8 | 369,600 | 36,960 Hz | 221,760 |
| 6S nominal | 22.2 | 488,400 | 48,840 Hz | 293,040 |
| 6S full | 25.2 | 554,400 | 55,440 Hz | 332,640 |
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 BetaFPV’s published sizes: the 11 × 2 mm stator, 13.8 mm bell, 8.6 mm height, 1.5 mm shaft and 6.6 mm mounting circle. Anything BetaFPV 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
- BETAFPV: 1102 Brushless Motors (product page). Retrieved Oct 19, 2026.
- BETAFPV: 1102 18000KV / 22000KV / 14000KV outline drawing and load performance tables (image on the product page). Rows step by current; BetaFPV leaves the throttle, RPM and coil temperature columns blank, so they are left out. Two 14000KV tables are both labelled GF-45mm-2P, and the first prints efficiencies (2.70 and 2.06 g/W at 8.0 A and 9.1 A) that don't match its thrust and power; copied as printed.. Retrieved Oct 19, 2026.
- BETAFPV: 1102 product photos (black and red 2022 version, side and top views), used for finish and spoke count. Retrieved Oct 19, 2026.
