RCinPower SmooX 2306 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

• Steel impact shim (A.I.P.)

  A stainless steel pad that RCinPower says raises the bearings' resistance to axial impacts and makes them last longer.

  Source: RCinPower features

• Damping ring (B.F.P.)

  A second-generation ring of flexible polymer that absorbs the rotor's high-frequency vibration, which RCinPower says reduces interference with the flight controller's gyro.

  Source: RCinPower features

• 260-class windings

  Single-strand, single-crystal oxygen-free copper rated for high temperature.

  Source: RCinPower features

• Magnetic circuit for 6S

  A stator and magnetic circuit designed for 6S, tested at each KV by RCinPower's international team, it says.

  Source: RCinPower features

• Bench data for every KV

  Five props at two voltages for each KV (four for the 1350KV), with the temperature after 5 s at full throttle.

  Source: RCinPower 1350KV sheet, RCinPower 1880KV sheet, RCinPower 2280KV sheet, RCinPower 2580KV sheet

What to pair it with

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

ESC

At full throttle the 1880KV drew up to 34.3 A on 6S (HQProp 6045), the 2280KV 39.3 A on 5S and the 2580KV 49.4 A on 5S. RCinPower rates them at 36 A, 40 A and 55 A. (RCinPower 1880KV sheet, RCinPower 2280KV sheet, RCinPower 2580KV sheet)

Props

On the 1880KV at 24 V: Gemfan 5040 1709 g, DAL 5046 1954 g, Gemfan 5152 1844 g, DAL 5050 1995 g and HQProp 6045 2333 g at full throttle. The Gemfan 5040 ran coolest (56 °C); the HQProp 6045 reached 80 °C. (RCinPower 1880KV sheet)

Battery

6S (or 5S) for the 1880KV; 4S–5S for the 2280KV and 2580KV; 4S–6S for the 1350KV. (RCinPower 1350KV sheet, RCinPower 1880KV sheet, RCinPower 2280KV sheet, RCinPower 2580KV sheet)

Frame

Four M3 screws, 16 × 16 mm. (RCinPower 1880KV sheet)

Where to buy

• WREKDchoose KV and colour
  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:

• Shaft. 4 mm, hollow; M5 thread protruding 13.3 mm (the 5 mm thread is from the drawing). (RCinPower 1880KV sheet)
• Stator. The coils are wound on a stack of thin steel laminations: 23 × 6.5 mm (sold as 2306). (RCinPower 1880KV sheet)
• Winding. single-strand, single-crystal oxygen-free copper, 260-class high-temperature wire. (RCinPower features)
• Base. 4 × M3 holes, 16 × 16 mm (the hole size on the drawings is blurred; it reads M3 on the 1880KV, 2280KV and 2580KV sheets). (RCinPower 1880KV sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1880KV 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 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 RCinPower’s published sizes: the 23 × 6.5 mm stator, 29 mm bell, 17.2 mm height, 5 mm shaft, 16 mm mounting circle and 12 teeth and 14 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 2306Plus (product page; its content is nine images with the features, spec tables, dimension drawings and bench data). Retrieved Oct 19, 2026.
2. RCinPower: SmooX 2306 Plus features (image on the product page: shape, A.I.P. shim, B.F.P. damping ring, windings, magnetic circuit). Retrieved Oct 19, 2026.
3. RCinPower: SmooX 2306 Plus 1350KV spec sheet (image on the product page: spec table, drawing, bench table with temperatures after 5 s at full throttle; the 24 V rows for the Gemfan 7042 are blank). Retrieved Oct 19, 2026.
4. RCinPower: SmooX 2306 Plus 1880KV spec sheet (image on the product page). Retrieved Oct 19, 2026.
5. RCinPower: SmooX 2306 Plus 2280KV spec sheet (image on the product page). Retrieved Oct 19, 2026.
6. RCinPower: SmooX 2306 Plus 2580KV spec sheet (image on the product page; the 21 V HQProp 6045 rows are missing). Retrieved Oct 19, 2026.
7. RCinPower: SmooX 2306 Plus main product photo (titanium, teal and orange), used for finish. Retrieved Oct 19, 2026.