5-inch FPV racing motor

iFlight R5 2207

A 2207 that iFlight designed for race quads such as its Mach R5: a one-piece bell, centre-slotted N52H magnets, and 2.1 kg of pull per motor on its Nazgul R5 V2 prop at 24 V (2100KV).

5-inch racing
6S (2050KV, 2100KV, 2220KV); 32 V (1590KV)

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 2207 motor drawn from iFlight’s published sizes, not its exact design. Thrust, current and power are iFlight’s bench figures for the Gemfan 51466 prop at 24 V, read straight across between its throttle steps. Its data starts at 50% throttle.

Version

1590KV32 V2050KV6S2100KV6S2220KV6S

Red or Tiffany Blue. iFlight tested it on 24 V.

Max thrust: 2,251 g; Gemfan 51466 prop, 24 V
Weight: 34.2 g; with wires, red 2100KV; 33.8 g for 1590KV and 30.4 g for 2220KV per their test reports; the product page gives 34.6 g for the Tiffany Blue version
Peak current: 49.0 A; full throttle
Max power: 1,154 W; full throttle

from $25.99a motor at iFlight

A set of four: $103.96

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

What it pulls

iFlight’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 51466: 1,345 g of thrust, 16.9 A, 403 W, 3.34 g per watt.

On your quad

All-up weight650 g

13.9 : 1

Thrust to weight at full throttle: four motors pull 9,004 g with the Gemfan 51466 at 24 V.

At 60% throttle they pull 5,380 g, 8.3 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 $25.99

Made for racing
iFlight designed it for race drones such as its Mach R5.
Source: iFlight product page
Curved N52H magnets
Centre-slotted arc magnets. iFlight says they cut the motor's response time.
Source: iFlight product page
Small air gap
iFlight says the bell-to-shaft joint let it cut the magnet air gap to a minimum, for more flux and more power.
Source: iFlight product page
One-piece bell
iFlight's Unibell, with five swept spokes on top and a 5 mm shaft with an M5 thread.
Source: iFlight 2100KV test report
Four KVs, two colours
1590KV to 2220KV; red or Tiffany Blue.
Source: iFlight product page

What to pair it with

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

ESC: Rated for at least the motor's peak current: about 50 A for the 2100KV and 59 A for the 2220KV on 6S, and 39 A for the 1590KV at 32 V. (iFlight 2100KV test report, iFlight 1590KV test report, iFlight 2220KV test report)
Props: On the 2100KV at 24 V, the Gemfan 51466 pulled the most (2251 g at full throttle) and was the most efficient at half throttle (4.15 g/W); iFlight's Nazgul R5 V2 pulled 2119 g and the HQ R37 1951 g. (iFlight 2100KV test report)
Battery: 6S for the 2050KV, 2100KV and 2220KV; iFlight gives 32 V for the 1590KV. (iFlight product page)
Frame: Four M3 holes on a 16 mm circle (the 2220KV has two). Four M3 × 8 screws and an M5 flange nut come in the box. (iFlight product page, iFlight 2100KV test report, iFlight 2220KV test report)

Where to buy

iFlightthe maker's store; same price for every KV and colour
$25.99seen 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	2,100 rpm/V (also 1590KV, 2050KV and 2220KV)	iFlight product page
Stator	22 × 7 mm (2207)	iFlight product page
Configuration	12N14P (12 stator slots, 14 magnet poles)	iFlight product page
Battery	6S LiPo (iFlight gives 25.2 V for the 2050KV, 2100KV and 2220KV, and 32 V for the 1590KV)	iFlight 2100KV test report
Weight	34.2 g (with wires, red 2100KV; 33.8 g for 1590KV and 30.4 g for 2220KV per their test reports; the product page gives 34.6 g for the Tiffany Blue version)	iFlight 2100KV test report
Dimensions	φ28.2 × 31.5 mm (with shaft); body 19 mm tall (φ28.18 mm on the 1590KV; φ27.2 × 30.9 mm, body 18.5 mm, on the 2220KV)	iFlight 2100KV test report
Shaft	5 mm, M5 thread, protrudes 12.5 mm (12.4 mm on the 2220KV)	iFlight 2100KV test report
Mounting	4 × M3 holes on a 16 mm circle, sold as "16 × 16"; base plate 2.5 mm (the 2220KV has two M3 holes on the 16 mm circle and a 2.8 mm base)	iFlight 2100KV test report
Bell	Unibell (one piece)	iFlight 2100KV test report
Magnets	N52H curved arc magnets, centre-slotted	iFlight product page
Bearings	φ9 × φ4 × 4 mm, NSK/NMB (the 1590KV report says NSK, the 2220KV report NMB)	iFlight 2100KV test report
Winding	single-strand copper	iFlight product page
Interphase resistance	55 mΩ (95.6 mΩ for 1590KV, 56.3 mΩ for 2050KV, 51.09 mΩ for 2220KV)	iFlight 2100KV test report
Peak current	49.49 A (100% throttle, Nazgul R5 V2 prop, 24 V; 38.62 A for 1590KV at 32 V, 49.53 A for 2050KV, 58.52 A for 2220KV)	iFlight 2100KV test report
Max power	1,167.5 W (1221.6 W for 1590KV, 1166.4 W for 2050KV, 1358.8 W for 2220KV)	iFlight 2100KV test report
Leads	20 AWG, 150 mm (22 AWG on the 2220KV)	iFlight product page
In the box	4 × M3×8 screws, 1 × M5 flange nut	iFlight product page

Bench data

Redrawn from iFlight’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.

1590KV on 32 V, 32 V3 props

Prop	Throttle	Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)
Nazgul R5 V2 (iFlight tri-blade)motor at 150 °C	50%	31.96	10.28	675	328.5	2.05
	60%	31.9	14.1	874	449.8	1.94
	70%	31.84	19.73	1,062	628.2	1.69
	80%	31.76	25.91	1,262	822.9	1.53
	90%	31.69	32.36	1,436	1025.5	1.4
	100%	31.63	38.62	1,533	1221.6	1.25
HQ R37motor at 157 °C	50%	31.97	8.68	635	277.5	2.29
	60%	31.92	12.93	803	412.7	1.95
	70%	31.87	18.81	985	599.5	1.64
	80%	31.8	22.63	1,194	719.6	1.66
	90%	31.72	29.41	1,392	932.9	1.49
	100%	31.66	35.3	1,532	1117.6	1.37
Gemfan 51466 (5.1 × 4.66, three blades)motor at 153 °C	50%	32.31	8.9	628	287.6	2.18
	60%	32.27	13.56	791	437.6	1.81
	70%	32.21	14.67	985	472.5	2.08
	80%	32.14	22.7	1,204	729.6	1.65
	90%	32.07	29.96	1,385	960.8	1.44
	100%	31.99	36.69	1,462	1173.7	1.25

Source: iFlight 1590KV test report

2100KV on 6S, 24 V3 props

Prop	Throttle	Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)
Gemfan 51466 (5.1 × 4.66, three blades)motor at 78 °C	50%	23.88	9.91	981	236.7	4.15
	60%	23.82	16.92	1,345	403	3.34
	70%	23.76	24.79	1,491	589	2.53
	80%	23.66	34.52	1,814	816.7	2.22
	90%	23.61	41.15	1,936	971.6	1.99
	100%	23.57	48.95	2,251	1153.8	1.95
Nazgul R5 V2 (iFlight tri-blade)motor at 73 °C	50%	23.88	10.81	978	258.1	3.79
	60%	23.82	18.99	1,502	452.3	3.32
	70%	23.77	25.46	1,566	605.2	2.59
	80%	23.71	36.3	1,779	860.7	2.07
	90%	23.65	42.19	1,925	997.8	1.93
	100%	23.59	49.49	2,119	1167.5	1.82
HQ R37motor at 71 °C	50%	24.01	9.73	905	233.6	3.87
	60%	23.86	15.3	1,134	365.1	3.11
	70%	23.78	23.52	1,406	559.3	2.51
	80%	23.75	35.81	1,692	850.5	1.99
	90%	23.68	43.79	1,895	1036.9	1.83
	100%	23.61	46.88	1,951	1106.8	1.76

Source: iFlight 2100KV test report

2220KV on 6S, 24 V3 props

Prop	Throttle	Voltage (V)	Current (A)	Thrust (g)	Power (W)	Efficiency (g/W)
HQ R29 V3motor at 160 °C	50%	23.79	13.32	647	316.9	2.04
	60%	23.71	18.52	810	439.1	1.84
	70%	23.63	24.82	1,037	586.5	1.77
	80%	23.48	33.88	1,226	795.5	1.54
	90%	23.38	43.5	1,448	1017	1.42
	100%	23.25	54.97	1,611	1278.1	1.26
HQ R29 V4motor at 160 °C	50%	23.81	13.94	607	331.9	1.83
	60%	23.7	18.79	756	445.3	1.7
	70%	23.62	26.21	955	619.1	1.54
	80%	23.51	33.81	1,135	794.9	1.43
	90%	23.4	44.39	1,352	1038.7	1.3
	100%	23.22	55.49	1,513	1288.5	1.17
HQ R36motor at 160 °C	50%	23.8	14.71	666	350.1	1.9
	60%	23.7	21.34	857	505.8	1.69
	70%	23.6	29.71	1,075	701.2	1.53
	80%	23.45	38.01	1,285	891.3	1.44
	90%	23.41	48.12	1,365	1126.5	1.21
	100%	23.22	58.52	1,483	1358.8	1.09

Source: iFlight 2220KV test report

Inside the motor

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

Bell. One piece (iFlight's "Unibell"), φ28.2 mm, with five swept spokes on top. (iFlight 2100KV test report)
Shaft. 5 mm with an M5 thread 9 mm long, protruding 12.5 mm. (iFlight 2100KV test report)
Magnets. Curved, centre-slotted N52H arc magnets, 14 poles. (iFlight product page)
Stator. 22 × 7 mm with 12 teeth, wound with single-strand copper; 20 AWG leads, 150 mm long. (iFlight product page)
Bearings. 9 × 4 × 4 mm, NSK or NMB. (iFlight 2100KV test report)
Base. 2.5 mm thick, with four M3 holes on a 16 mm circle. (iFlight 2100KV test report)
2220KV. A smaller build: φ27.2 × 30.9 mm, 30.4 g, an 18.5 mm body, a 2.8 mm base with two M3 holes on the 16 mm circle, and 22 AWG leads. (iFlight 2220KV test report)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 2100KV 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	31,080	3,626 Hz	21,756
4S full	16.8	35,280	4,116 Hz	24,696
6S nominal	22.2	46,620	5,439 Hz	32,634
6S full	25.2	52,920	6,174 Hz	37,044

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 iFlight’s published sizes: the 22 × 7 mm stator, 28.2 mm bell, 19 mm height, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 magnets. Anything iFlight 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

iFlight: R5 2207 Race FPV motor (product page, with its photo gallery). Retrieved Oct 19, 2026.
iFlight: R5 2207 2100KV test report (spec table, dimension drawing, thrust data). Retrieved Oct 19, 2026.
iFlight: R5 2207 1590KV test report. Retrieved Oct 19, 2026.
iFlight: R5 2207 2220KV test report. Retrieved Oct 19, 2026.