7-inch long-range FPV motor

Hobbywing RTF 2807

Hobbywing’s RTF-line 7-inch motor in 1300KV for 6S, 1500KV for 5S and 1700KV for 4S; on Hobbywing’s 6S bench the 1300KV pulls 2824 g on an HQ 7×3.5×3 at full throttle.

7-inch long range
6S (1300KV), 5S (1500KV) or 4S (1700KV)
7-inch three-blade props

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 2807 motor drawn from Hobbywing’s published sizes, not its exact design. Thrust, current and power are Hobbywing’s bench figures for the HQ7x3.5x3 prop at 24 V, read straight across between its throttle steps. Its data starts at 40% throttle.

Version

1300KV4S–6S1500KV4S–5S1700KV3S–4S

Benched on 6S (24 V) on the HQ7x3.5x3 and HQ7x4x3.

Max thrust: 2,824 g; HQ7x3.5x3 prop, 24 V
Weight: 59 g; 1500KV 58.7 g, 1700KV 58.4 g; Hobbywing does not say whether the leads are included
Peak current: 48.5 A; full throttle
Max power: 1,165 W; full throttle

from $19.99a motor at ReadyMadeRC

A set of four: $79.96

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

What it pulls

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

At 60% with the HQ7x3.5x3: 1,258 g of thrust, 13.8 A, 332 W, 3.79 g per watt.

On your quad

All-up weight650 g

17.4 : 1

Thrust to weight at full throttle: four motors pull 11,296 g with the HQ7x3.5x3 at 24 V.

At 60% throttle they pull 5,032 g, 7.7 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 $19.99

About 2.8 kg on 6S
At full throttle on Hobbywing’s 24 V bench the 1300KV pulled 2824 g on an HQ 7×3.5×3 at 48.5 A, and 2818 g on an HQ 7×4×3 at 56.7 A.
Source: Hobbywing 1300KV spec sheet
Efficiency under load
Hobbywing says the 2807 is about 4% more efficient at mid and high load than same-size motors from other brands.
Source: Hobbywing product page
Cooling rotor
The rotor has a cooling structure; Hobbywing says it runs at full load more than 40% longer than same-size motors from other brands.
Source: Hobbywing product page
Anti-slip prop mount
A grooved prop mount keeps the prop from slipping. Inside are arc-shaped magnets, 0.2 mm silicon-steel laminations and a multi-strand winding of 220 °C wire.
Source: Hobbywing product page

What to pair it with

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

ESC: Hobbywing lists its RTF 65A 4-in-1 6S Lite ESCs (BLS V2 or AT). Peak current is 56.7 A for 6 s (1300KV), 59.5 A for 7 s (1500KV) and 53.9 A for 13 s (1700KV); Hobbywing recommends no more than 9 to 40 s at full throttle, depending on KV and prop. (Hobbywing product page, Hobbywing 1300KV spec sheet, Hobbywing 1500KV spec sheet, Hobbywing 1700KV spec sheet)
Props: Hobbywing lists the HQ 7×3.5×3 and 7×4×3. The 7×3.5 draws less: on 6S the 1300KV pulled 2824 g at 48.5 A on it, against 2818 g at 56.7 A on the 7×4. (Hobbywing product page, Hobbywing 1300KV spec sheet)
Battery: 6S for the 1300KV, 5S for the 1500KV and 4S for the 1700KV, the voltages Hobbywing benched them at; rated 4S–6S, 4S–5S and 3S–4S. (Hobbywing product page, Hobbywing 1300KV spec sheet, Hobbywing 1500KV spec sheet, Hobbywing 1700KV spec sheet)
Frame: Four M3 holes on a 19 mm circle; 18 AWG leads, 200 mm long. (Hobbywing product page)

Where to buy

HobbywingDirectHobbywing’s North American store, as the XRotor FPV 2807; 1300KV, 1500KV or 1700KV, same price; 1300KV and 1500KV out of stock
$24.99seen Oct 19, 2026
Visit
Unmanned Tech1300KV, 1500KV or 1700KV
price on the store’s page
Visit
ReadyMadeRC1700KV
$19.99seen Oct 19, 2026
Visit
ReadyMadeRC1300KV; on backorder
$19.99seen 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	1,300 rpm/V (also 1500KV and 1700KV)	Hobbywing product page
Stator	28 × 7 mm (2807) (from the model number; Hobbywing gives no separate stator size)	Hobbywing product page
Configuration	12N14P (12 stator slots, 14 magnet poles)	Hobbywing product page
Battery	4S–6S LiPo (1500KV: 4S–5S; 1700KV: 3S–4S)	Hobbywing product page
Weight	59 g (1500KV 58.7 g, 1700KV 58.4 g; Hobbywing does not say whether the leads are included)	Hobbywing product page
Dimensions	Φ34 × 20.5 mm (20.5 mm from the top of the bell to the bottom of the base, which reaches 6.2 mm below the bell (drawing, S5))	Hobbywing product page, Hobbywing drawing
Shaft	5 mm with an M5 × 0.8 thread, standing 15 mm above the bell; the last 9 mm threaded	Hobbywing product page, Hobbywing drawing
Mounting	4 × M3 holes on a 19 mm circle	Hobbywing product page, Hobbywing drawing
Bell	Rotor with a cooling structure; grooved, anti-slip prop mount	Hobbywing product page
Magnets	Arc-shaped	Hobbywing product page
Winding	Multi-strand, enamelled wire rated for 220 °C (C-class insulation)	Hobbywing product page, Hobbywing 1300KV spec sheet
Internal resistance	53.8 mΩ (1500KV 43.6 mΩ, 1700KV 37.5 mΩ)	Hobbywing product page
Idle current	2 A (at 24 V; 1500KV 2.27 A at 20 V, 1700KV 2.13 A at 16 V)	Hobbywing product page
Peak current	56.7 A (for 6 s; 1500KV 59.5 A for 7 s, 1700KV 53.9 A for 13 s)	Hobbywing product page
Max power	1,361 W (for 6 s; 1500KV 1195 W for 7 s, 1700KV 864 W for 13 s. Rated output 190 W (1500KV 180 W, 1700KV 160 W))	Hobbywing product page
Leads	18 AWG black silicone wire, 200 mm	Hobbywing product page, Hobbywing drawing
In the box	M5 × 0.8 flange nut; M3 × 0.5 cap screws, 11 mm long (drawn with the motor on Hobbywing’s drawing, which gives no quantities)	Hobbywing drawing

Bench data

Redrawn from Hobbywing’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.

1300KV on 4S–6S, 24 V2 props

Prop	Throttle	Thrust (g)	Current (A)	Power (W)	RPM	Efficiency (g/W)
HQ7x3.5x3 (HQProp 7 × 3.5, 3-blade)	40%	596	5.3	128	10925	4.66
	50%	913	9	215	13198	4.24
	60%	1,258	13.8	332	15318	3.79
	70%	1,635	20.3	487	17419	3.36
	80%	2,053	28.6	688	19433	2.98
	90%	2,482	38.7	930	21096	2.67
	100%	2,824	48.5	1165	22329	2.43
HQ7x4x3 (HQProp 7 × 4, 3-blade)	40%	648	6.4	155	10608	4.19
	50%	966	10.7	257	12747	3.76
	60%	1,326	16.6	400	14736	3.31
	70%	1,732	24.6	591	16623	2.93
	80%	2,162	34.4	827	18358	2.61
	90%	2,560	46.1	1107	19775	2.31
	100%	2,818	56.7	1361	20611	2.07

Source: Hobbywing 1300KV spec sheet

1500KV on 4S–5S, 20 V2 props

Prop	Throttle	Thrust (g)	Current (A)	Power (W)	RPM	Efficiency (g/W)
HQ7x4x3 (HQProp 7 × 4, 3-blade)	40%	605	6.5	130	10200	4.65
	50%	895	11.1	224	12233	4
	60%	1,227	17.4	351	14120	3.5
	70%	1,600	25.6	515	15929	3.11
	80%	1,995	35.9	722	17646	2.76
	90%	2,366	48.2	967	19087	2.45
	100%	2,646	59.5	1195	19984	2.22
HQ7x3.5x3 (HQProp 7 × 3.5, 3-blade)	40%	535	5.5	110	10429	4.86
	50%	808	9.3	188	12590	4.3
	60%	1,119	14.5	292	14650	3.83
	70%	1,471	21.2	427	16672	3.44
	80%	1,863	29.9	601	18599	3.1
	90%	2,266	40.3	810	20250	2.8
	100%	2,607	50.7	1019	21513	2.56

Source: Hobbywing 1500KV spec sheet

1700KV on 3S–4S, 16 V2 props

Prop	Throttle	Thrust (g)	Current (A)	Power (W)	RPM	Efficiency (g/W)
HQ7x4x3 (HQProp 7 × 4, 3-blade)	40%	453	5.8	92	9085	4.91
	50%	695	10.2	163	11030	4.26
	60%	959	15.8	253	12742	3.78
	70%	1,253	22.9	367	14381	3.41
	80%	1,586	32.1	514	16007	3.08
	90%	1,934	43.5	697	17463	2.78
	100%	2,205	53.9	864	18503	2.55
HQ7x3.5x3 (HQProp 7 × 3.5, 3-blade)	40%	404	4.9	79	9342	5.1
	50%	628	8.6	137	11353	4.57
	60%	885	13.3	213	13211	4.16
	70%	1,173	19.2	309	15015	3.8
	80%	1,491	27	432	16799	3.45
	90%	1,825	36.5	585	18397	3.12
	100%	2,129	45.6	731	19601	2.91

Source: Hobbywing 1700KV 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. A rotor with a cooling structure and a grooved prop mount. (Hobbywing product page)
Stator. 0.2 mm silicon-steel laminations; 12 slots and 14 magnet poles. (Hobbywing product page)
Winding. Multi-strand winding of enamelled wire rated for 220 °C. (Hobbywing product page, Hobbywing 1300KV spec sheet)
Magnets. Arc-shaped. (Hobbywing product page)
Shaft. 5 mm with an M5 × 0.8 thread, standing 15 mm above the bell; the last 9 mm is threaded. (Hobbywing product page, Hobbywing drawing)
Base. Four M3 holes on a 19 mm circle; three 18 AWG black silicone leads, 200 mm long. (Hobbywing product page, Hobbywing drawing)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1300KV 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	19,240	2,245 Hz	13,468
4S full	16.8	21,840	2,548 Hz	15,288
6S nominal	22.2	28,860	3,367 Hz	20,202
6S full	25.2	32,760	3,822 Hz	22,932

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 Hobbywing’s published sizes: the 28 × 7 mm stator, 34 mm bell, 20.5 mm height, 5 mm shaft, 19 mm mounting circle and 12 teeth and 14 magnets. Anything Hobbywing 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.