5-inch long-range FPV motor

MEPS NEON 2203.5

A 20 g motor on a 22 × 3.5 mm stator for light 5-inch long-range builds: 769 g of thrust at 13.2 A per motor on MEPS's 24 V bench (1500KV, 5125-3 prop).

5-inch long range on 6S (1500KV)
3-inch whoops and 4-inch toothpicks on 4S (3550KV)
Light builds

Drawing the 3D model…

Throttle60%

The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 2203.5 motor drawn from MEPS’s published sizes, not its exact design. Thrust, current and power are MEPS’s bench figures for the 5125-3 prop at 24 V, read straight across between its throttle steps. Its data starts at 10% throttle.

Version

1500KV6S3550KV4S

MEPS's choice for 5-inch long range, with 5-inch two-blade props. Tested at 24 V with 5125-3 and 5126-2 props.

Max thrust: 769 g; 5125-3 prop, 24 V
Weight: 20 g; with cable, both KVs
Peak current: 13.2 A; full throttle
Max power: 312 W; full throttle

from $16.90a motor at MEPS

A set of four: $67.60

Price seen Oct 19, 2026. Plain links: we earn nothing from them.

What it pulls

MEPS’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.

At 60% with the 5125-3: 368 g of thrust, 4.2 A, 99 W, 3.70 g per watt.

On your quad

All-up weight650 g

4.7 : 1

Thrust to weight at full throttle: four motors pull 3,076 g with the 5125-3 at 24 V.

At 60% throttle they pull 1,472 g, 2.3 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 for $16.90

20 g
MEPS lists 20 g with leads for both KVs.
Source: MEPS spec table
Long flights
MEPS says it allows up to 35 minutes of flight on long-range builds.
Source: MEPS product page
Thrust data for both KVs
769 g at 13.2 A on 24 V (1500KV, 5125-3) and 717 g at 27.5 A on 12 V (3550KV, 5125-3).
Source: MEPS data test
Uni-bell on NMB bearings
An aluminium alloy one-piece bell with anti-slip grooves on the prop mount, turning on NMB bearings.
Source: MEPS product page

What to pair it with

Our reading of MEPS’s numbers, so your build matches what the motor was tested with.

ESC: MEPS's tests peak at 13.2 A (1500KV, 24 V) and 27.6 A (3550KV, 12 V); its spec table lists 8.7 A and 29.5 A. A 30 A ESC covers both. (MEPS spec table, MEPS data test)
Props: MEPS tested 5125-3 and 5126-2 props on both KVs, and recommends 5-inch two-blade props for the 1500KV and 3-inch three-blade props for the 3550KV. (MEPS data test, MEPS KV comparison)
Battery: 6S for 1500KV, 4S for 3550KV. (MEPS spec table)
Frame: Four M2 screws on a 12 mm circle. (MEPS size chart)

Where to buy

MEPSthe maker's store; $63.76 for four
$16.90seen Oct 19, 2026
Visit

Plain links, not affiliate links. Prices change; the store’s page has the current one.

Full specs

Spec	Value	Source
KV	1,500 rpm/V (also 3550KV; MEPS's data test labels the 1500KV as KV1550)	MEPS spec table
Stator	22 × 3.5 mm (2203.5) (MEPS's page calls it the 2203.5 stator)	MEPS product page
Configuration	12N14P (12 stator slots, 14 magnet poles)	MEPS spec table
Battery	6S LiPo (1500KV) (3550KV: 4S)	MEPS spec table
Weight	20 g (with cable, both KVs)	MEPS spec table
Dimensions	φ27.75 × 28.45 mm (with shaft); 15.95 mm from the base to the top of the bell	MEPS size chart
Shaft	5 mm, M5 × 0.8 thread 8 mm long, protrudes 12.5 mm above the bell	MEPS size chart
Mounting	4 × M2 holes (M2 × 0.4) on a 12 mm circle	MEPS size chart
Bell	aluminium alloy, one piece ("uni-bell"), with anti-slip grooves on the prop mount	MEPS product page
Bearings	NMB	MEPS product page
Internal resistance	246 mΩ (80 mΩ for 3550KV)	MEPS spec table
Idle current	0.6 A (at 10 V; 1.4 A for 3550KV)	MEPS spec table
Peak current	8.7 A (MEPS's "Peak Current (60S)"; 29.5 A for 3550KV. The 1500KV data test reaches 13.2 A at 24 V)	MEPS spec table
Max power	206.7 W (461.3 W for 3550KV)	MEPS spec table
Leads	24 AWG, 150 mm, with 10 mm of heat-shrink at the motor and 3 mm stripped ends (the gauge is from MEPS's spec table (S2))	MEPS size chart

Bench data

Redrawn from MEPS’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.

1500KV on 6S, 24 V2 props

Prop	Throttle	Voltage (V)	Current (A)	RPM	Thrust (g)	Power (W)	Efficiency (g/W)
5125-3	10%	24	0.1	3879	12	3	4.7
	20%	24	0.3	7329	49	8	6.1
	30%	24	0.8	10408	107	20	5.3
	40%	24	1.6	13148	177	37	4.8
	50%	24	2.7	15848	266	64	4.2
	60%	24	4.2	18237	368	99	3.7
	70%	24	5.9	20375	467	141	3.3
	80%	24	8.1	22363	572	192	3
	90%	24	10.6	24084	673	251	2.7
	100%	24	13.2	25577	769	312	2.5
5126-2	10%	24	0.1	3833	13	3	5
	20%	24	0.4	7210	54	9	6.3
	30%	24	0.8	10205	112	20	5.5
	40%	24	1.5	13049	180	37	4.9
	50%	24	2.6	15630	268	62	4.3
	60%	24	4	18029	365	97	3.8
	70%	24	5.7	20177	457	137	3.3
	80%	24	7.9	22292	560	187	3
	90%	24	10.3	24051	663	245	2.7
	100%	24	13.1	25482	730	310	2.4

Source: MEPS data test

3550KV on 4S, 12 V2 props

Prop	Throttle	Voltage (V)	Current (A)	RPM	Thrust (g)	Power (W)	Efficiency (g/W)
5125-3	10%	12	0.3	4211	16	3	5.3
	20%	12	0.9	7851	58	10	5.7
	30%	12	2	11058	121	24	5
	40%	12	3.8	13665	198	45	4.4
	50%	12	6.3	16322	284	75	3.8
	60%	12	9.5	18313	373	112	3.3
	70%	12	13.3	20386	472	156	3
	80%	12	17.6	22207	562	204	2.8
	90%	11	22.3	23632	636	256	2.5
	100%	11	27.5	24944	717	311	2.3
5126-2	10%	12	0.3	4107	15	3	4.8
	20%	12	0.9	7643	59	11	5.5
	30%	12	2.1	10733	121	25	4.9
	40%	12	3.7	13278	191	44	4.3
	50%	12	6.1	15888	278	72	3.8
	60%	12	9.1	17928	359	108	3.3
	70%	12	13	20268	461	152	3
	80%	12	17.4	22313	557	202	2.8
	90%	11	22.3	23855	640	256	2.5
	100%	11	27.6	25075	717	313	2.3

Source: MEPS data test

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

Shaft. 5 mm, M5 × 0.8 thread 8 mm long, protrudes 12.5 mm above the bell. (MEPS size chart)
Bell. aluminium alloy, one piece ("uni-bell"), with anti-slip grooves on the prop mount. (MEPS product page)
Stator. The coils are wound on a stack of thin steel laminations: 22 × 3.5 mm (2203.5) (MEPS's page calls it the 2203.5 stator). (MEPS product page)
Bearings. NMB. (MEPS product page)
Base. 4 × M2 holes (M2 × 0.4) on a 12 mm circle. (MEPS size chart)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1500KV 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	22,200	2,590 Hz	15,540
4S full	16.8	25,200	2,940 Hz	17,640
6S nominal	22.2	33,300	3,885 Hz	23,310
6S full	25.2	37,800	4,410 Hz	26,460

A 14-pole rotor has 7 pole pairs, so every turn of the shaft is 7 electrical cycles, and a six-step ESC switches the phases 42 times per turn.

About the 3D model

A generic outrunner drawn from MEPS’s published sizes: the 22 × 3.5 mm stator, 27.75 mm bell, 15.95 mm height, 5 mm shaft, 12 mm mounting circle and 12 teeth and 14 magnets. Anything MEPS 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

MEPS: NEON 2203.5 motor, long-range for 3–5" FPV drone 1500KV/3550KV (product page, MEPS's own store). Retrieved Oct 19, 2026.
MEPS: NEON 2203.5 specification table (image on the product page). Retrieved Oct 19, 2026.
MEPS: NEON 2203.5 size chart (image on the product page). Retrieved Oct 19, 2026.
MEPS: NEON 2203.5 data test, KV1550 (the 1500KV) and KV3550 tables (image on the product page; voltages from its voltage column and charts, not the prop labels). Retrieved Oct 19, 2026.
MEPS: NEON 2203.5 1500KV vs 3550KV table (image on the product page). Retrieved Oct 19, 2026.
MEPS: NEON 2203.5 1500KV fluorescent pink, main product photo, used for finish. Retrieved Oct 19, 2026.