BetaFPV 1102 Brushless 2026
| Stator | 1102 |
|---|---|
| KV options | 21000 |
| Weight | 2.85 g |
| Shaft | 1.5mm |
| Max cells | 1S |
| Dimensions | Ø13.8x13.6 mm |
| Mount (bolt circle, mm) | Ø6.6 (3-M1.4) |
| Max thrust | 66.6 g |
| Price (approx.) | 46.49 USD |
At 2.85 g it is right at the class average across the 3 1102-class motors in our database (avg 2.8 g).
Best props for the 1102 Brushless 2026
Gemfan 1811 3-blade or Gemfan 45mm 3-blade (BetaFPV)
Thrust data (BetaFPV bench test)
| KV | Prop | Battery | Throttle | Current | RPM | Thrust | Efficiency |
|---|---|---|---|---|---|---|---|
| 21000 | GF 1811-3 | 1S | 30 | 0.8 A | 16081 | 9.6 g | 3.05 g/W |
| 21000 | GF 1811-3 | 1S | 40 | 1.54 A | 21132 | 16.7 g | 2.77 g/W |
| 21000 | GF 1811-3 | 1S | 50 | 2.52 A | 25443 | 24.8 g | 2.53 g/W |
| 21000 | GF 1811-3 | 1S | 60 | 3.57 A | 29730 | 34.1 g | 2.46 g/W |
| 21000 | GF 1811-3 | 1S | 70 | 4.73 A | 33111 | 42.4 g | 2.31 g/W |
| 21000 | GF 1811-3 | 1S | 80 | 6.01 A | 36309 | 50.2 g | 2.17 g/W |
| 21000 | GF 1811-3 | 1S | 90 | 7.41 A | 39179 | 58.5 g | 2.06 g/W |
| 21000 | GF 1811-3 | 1S | 100 | 9.18 A | 41913 | 66.6 g | 1.91 g/W |
Manufacturer bench figures (BetaFPV bench, 21000 KV on a Gemfan 1811-3 at 1S; 8 throttle points (30-100% in 10% steps), 3.92-3.81 V under load); real-world thrust varies with ESC, battery sag and prop condition.
Thrust-to-weight with this motor
Four BetaFPV 1102 Brushless 2026 motors at 66.6 g max thrust each give 266.4 g: 2:1, the minimum to fly, up to 133.2 g all-up; 4:1 (freestyle) up to 66.6 g; 8:1 (racing) up to 33.3 g.
RPM & prop speed on this motor
Props in this motor's class
| Prop | Size | Blades | Weight |
|---|---|---|---|
| weBLEEDfpv HQ Ultralight Whoop 31MM | 1.22x1.0 | 3 | 0.16 g |
| HQProp 40MMX2 Ultralight 40mm Micro/Whoop | 1.6x1.2 | 2 | 0.2 g |
| HQProp 51MMX2 Ultralight | 2.0x0.9 | 2 | 0.23 g |
| Gemfan 35MMS 3-Blade | 1.4x0.96 | 3 | 0.24 g |
| HQProp 40mm Ultralight 3-Blade | 1.6x1.0 | 3 | 0.25 g |
Where this data comes from
The rows are BetaFPV's own "Outline Drawing / Load Performance" sheet image (1102_Brushless_Motors_2026_load_performance.jpg, 1600x1600) on betafpv.com/products/1102-brushless-motors-2026: one eight-row table headed "Freestyle 1102 - 21000KV" on a GF 1811-3 at 1S, 30-100% throttle in 10% steps, with Speed (RPM) and a per-row voltage (3.92 V down to 3.81 V under load). Its Input (W) is voltage x current to the tenth on every row, and its Efficiency is thrust over voltage x current within 0.01 g/W (the voltage and current columns are rounded, so 9.6 / (3.92 x 0.80) gives 3.06 where the sheet prints 3.05). The spec-block cross-check lands on the sheet's own 100% row: "Maximum Power: 35W" and "Maximum Current: 9.2A" are that row's 35.0 W and 9.18 A. Identity for this page: the maker's spec block and our retail listing agree on 21000 KV, 2.85 g, 4.2 V (1S) and a 1.5 mm shaft, and the listing's title names the 2026 line; the 2022-series 1102 (/motors/betafpv-2022-series-1102-micro-whoop/) is a different motor. The outline drawing gives the body as O13.8 x 13.6 mm overall (8.6 mm of body plus a 5 mm shaft), a 1.5 mm shaft, three M1.4 holes on a 6.6 mm bolt circle ("3-M1.4 EQS", a bolt circle, so mount_mm stays empty) and a 37 mm 28AWG JST 1.25 3-pin lead. Max thrust is 66.6 g, the 100% row, where the page carried none. Recommended props are the two BetaFPV names under Recommended Parts (GF 1811 3-Blade, GF 45mm 3-Blade); the bench run is on the first.