RCinPower SmooX 1507 Plus

What it pulls

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

What you get

• 260 °C single-strand windings

  Single-strand, single-crystal oxygen-free copper rated to 260 °C.

  Source: RCinPower product page

• Damped for the bearings

  RCinPower says an optimised damping design makes the bearings last longer and cuts motor vibration.

  Source: RCinPower product page

• Stiffer base

  The mount has reinforcing V-grooves that RCinPower says make the base more rigid.

  Source: RCinPower product page

• Bench data for every KV

  3-inch, 75 mm ducted, 4-inch and 5-inch props at two voltages per KV, with the temperature after 3 s at full throttle.

  Source: RCinPower 2680KV sheet, RCinPower 3800KV sheet, RCinPower 4200KV sheet

What to pair it with

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

ESC

With 3-inch props the 3800KV drew 16 A at full throttle on 4S and the 4200KV 17.2 A; with 4-inch props up to 23.8 A (4200KV), and with the Gemfan 5125 28.6 A (3800KV). RCinPower rates them at 29 A and 30 A. (RCinPower 3800KV sheet, RCinPower 4200KV sheet)

Props

Tested with the HQProp 3 × 4 × 3, the Gemfan D75 ducted prop, the HQProp 4 × 3 × 3 and the Gemfan 5125 three-blade. The 4-inch and 5-inch props ran hot (84–89 °C) on 4S with the 3800KV and 4200KV. (RCinPower 3800KV sheet, RCinPower 4200KV sheet)

Battery

3S–4S for the 3800KV and 4200KV, 4S–6S for the 2680KV. (RCinPower 2680KV sheet, RCinPower 3800KV sheet, RCinPower 4200KV sheet)

Frame

Four M2 screws, 12 × 12 mm. (RCinPower 2680KV sheet)

Where to buy

• GetFPV2680KV, 3800KV or 4200KV
  price on the store’s page
  Visit

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

Full specs

Bench data

Redrawn from RCinPower’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.

Inside the motor

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

• Windings. Single-strand, single-crystal oxygen-free copper rated to 260 °C. (RCinPower product page)
• Base. Four M2 holes on a 12 × 12 mm pattern, with V-grooves in the mount for stiffness. (RCinPower product page)
• Shaft. 2 mm, with an M5 thread for the prop nut protruding 12.3 mm above the bell. (RCinPower 2680KV sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 3800KV 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.

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 RCinPower’s published sizes: the 15 × 7 mm stator, 20.7 mm bell, 15.9 mm height, 5 mm shaft, 12 mm mounting circle and 9 teeth and 12 magnets. Anything RCinPower 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

1. RCinPower: SmooX 1507Plus (product page; its content is seven images with the features, spec tables, dimension drawings and bench data). Retrieved Oct 19, 2026.
2. RCinPower: SmooX 1507 Plus 2680KV spec sheet (image on the product page: spec table, drawing, bench table with temperatures after 3 s at full throttle). Retrieved Oct 19, 2026.
3. RCinPower: SmooX 1507 Plus 3800KV spec sheet (image on the product page). Retrieved Oct 19, 2026.
4. RCinPower: SmooX 1507 Plus 4200KV spec sheet (image on the product page; the 14.8 V Gemfan 5125 rows are blank). Retrieved Oct 19, 2026.
5. RCinPower: SmooX 1507 Plus main product photo (orange), used for finish. Retrieved Oct 19, 2026.