1S–2S micro FPV motor
NewBeeDrone FLOW 1202
A 4.5 g micro motor that pulls 158 g on a Gemfan 3018 at 8.1 V in NewBeeDrone's test (8420KV, 2S), with an 11420KV version for 1S.
- Micro quads on 3-inch props
- 2S (8420KV) or 1S (11420KV)
- 15 A ESC
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1202 motor drawn from NewBeeDrone’s published sizes, not its exact design. No-load speed is KV × 7.4 V, a nominal pack for this version. NewBeeDrone’s bench tables for it step by thrust rather than throttle, so they are in the bench data below, not on this readout.
- Max thrust
- 158 g
- GF3018 2B prop, 8.1 V
- Weight
- 4.5 g
- with wire
- Peak current
- 10.2 A
- full throttle
- Max power
- 82 W
- full throttle
from $49.99a motor at NewBeeDrone
A set of four: $199.96
Price seen Oct 19, 2026. Plain links: we earn nothing from them.
What you get for $49.99
158 g on 2S
The 8420KV pulls 158 g at 10.2 A and 82.3 W on a Gemfan 3018 two-blade at 8.1 V.
Source: NewBeeDrone spec sheet
Titanium shaft, NSK bearings
A 1.5 mm TC4 titanium alloy shaft running in NSK ball bearings.
Source: NewBeeDrone product page
Thin laminations
The stator core is stacked from 0.2 mm silicon steel sheets.
Source: NewBeeDrone product page
Balanced
NewBeeDrone gives rotor runout of 0.1 mm or less and dynamic balance within 10 mg.
Source: NewBeeDrone spec sheet
What to pair it with
Our reading of NewBeeDrone’s numbers, so your build matches what the motor was tested with.
- ESC
- NewBeeDrone's sheet calls for a 15 A ESC; the 8420KV peaks at 10.2 A on its bench. (NewBeeDrone spec sheet)
- Props
- NewBeeDrone tested it on a Gemfan 3018 (3-inch) prop; its sheet lists the GF3018 three-blade. (NewBeeDrone spec sheet)
- Battery
- 2S for the 8420KV, 1S for the 11420KV. (NewBeeDrone product page)
- Frame
- Four holes on a 9 mm circle, which NewBeeDrone calls a 9 mm X pattern. (NewBeeDrone product page, NewBeeDrone spec sheet)
Where to buy
- NewBeeDronethe maker's store; set of 4, same price for both KVs$49.99seen Oct 19, 2026Visit
- WREKDset of 4, 8420KV or 11420KVprice on the store’s pageVisit
- GetFPVT-mount, set of 4, 8420KV or 11420KVprice 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 | 8,420 rpm/V (also 11420KV) | NewBeeDrone product page |
| Stator | 12 × 2 mm (1202), 0.2 mm silicon steel sheets | NewBeeDrone spec sheet |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | NewBeeDrone spec sheet |
| Battery | 2S (8420KV, rated 8 V) or 1S (11420KV) LiPo | NewBeeDrone product page |
| Weight | 4.5 g (with wire) | NewBeeDrone product page |
| Dimensions | φ15.7 × 14.3 mm (with shaft) | NewBeeDrone spec sheet |
| Shaft | 1.5 mm titanium alloy (TC4), protrudes 4.9 mm | NewBeeDrone product page |
| Mounting | 4 holes on a 9 mm circle (sold as a 9 mm X pattern) | NewBeeDrone spec sheet |
| Bell | 4 × M2×0.4 threaded holes on a 5 mm circle in the top | NewBeeDrone spec sheet |
| Bearings | NSK ball bearings | NewBeeDrone product page |
| Internal resistance | 220 mΩ (8420KV) | NewBeeDrone spec sheet |
| Max current | 10.2 A (8420KV, GF3018 two-blade at 8.1 V) | NewBeeDrone spec sheet |
| Max power | 82.3 W | NewBeeDrone spec sheet |
| Leads | 30 AWG silicone, 60 mm including the JST 1.25 mm 3-pin plug | NewBeeDrone product page |
Bench data
Redrawn from NewBeeDrone’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.
8420KV on 2S, 8.1 V1 prop
| Prop | Step | Thrust (g) | Current (A) | RPM | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| GF3018 2B (Gemfan 3018, 2-blade) | 40 | 2.06 | 17929 | 16.7 | 2.39 | |
| 60 | 3.1 | 21232 | 25.1 | 2.39 | ||
| 80 | 4.63 | 24889 | 37.5 | 2.13 | ||
| 100 | 5.83 | 27680 | 47.2 | 2.12 | ||
| 120 | 7.17 | 29719 | 58 | 2.07 | ||
| 140 | 8.44 | 31747 | 68.4 | 2.05 | ||
| Max | 158 | 10.2 | 33333 | 82.3 | 1.92 |
Source: NewBeeDrone 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:
- Bell. NewBeeDrone lists 7075 aluminium alloy. The top has six spokes and four M2 threaded holes on a 5 mm circle around the shaft. (NewBeeDrone spec sheet)
- Shaft. 1.5 mm TC4 titanium alloy, standing 4.9 mm above the bell. (NewBeeDrone product page)
- Stator. 12 mm across and 2 mm tall, 9 slots, stacked from 0.2 mm silicon steel sheets; 12 magnet poles in the bell. (NewBeeDrone spec sheet)
- Bearings. NSK ball bearings. (NewBeeDrone product page)
- Leads. Three 30 AWG silicone wires, 60 mm long with a JST 1.25 mm three-pin plug. (NewBeeDrone product page)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 8420KV 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 | 124,616 | 12,462 Hz | 74,770 |
| 4S full | 16.8 | 141,456 | 14,146 Hz | 84,874 |
| 6S nominal | 22.2 | 186,924 | 18,692 Hz | 112,154 |
| 6S full | 25.2 | 212,184 | 21,218 Hz | 127,310 |
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 NewBeeDrone’s published sizes: the 12 × 2 mm stator, 15.7 mm bell, 9.4 mm height, 1.5 mm shaft, 9 mm mounting circle and 9 teeth and 12 magnets. Anything NewBeeDrone 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
- NewBeeDrone: FLOW 1202 Racing and Freestyle FPV Micro Motor (Set of 4) 8420KV/11420KV (product page on NewBeeDrone's own store). Retrieved Oct 19, 2026.
- NewBeeDrone: FLOW 1202 8420KV spec sheet (specification, outline drawing and load performance; image on the product page). The bench table steps by thrust at 8.1 V; its last row matches the sheet's maximum current (10.20 A) and power (82.3 W). The table names the prop GF3018 2B, the spec list GF3018-3B.. Retrieved Oct 19, 2026.
- NewBeeDrone: FLOW 1202 product photos (side view and top view), used for finish and spoke count. Retrieved Oct 19, 2026.
