RCinPower Bison 22.5-7

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

• Built to take crashes

  RCinPower kept the GTS V2's design language and strengthened the structure to make the motor more crash-resistant, while keeping the weight down.

  Source: RCinPower features 1, RCinPower features 3

• 22.5 × 7 mm stator

  A stator size RCinPower chose instead of the usual 22 mm or 23 mm, wound single-strand with single-crystal oxygen-free copper for linear power, it says.

  Source: RCinPower features 2

• 694 bearings

  4 × 11 × 4 mm bearings, which RCinPower says are twice as strong as the usual 684s and run smoother and longer.

  Source: RCinPower features 2

• 33 g

  33 g with 3 cm leads in both spec tables; RCinPower's scale photo shows 33.07 g.

  Source: RCinPower 1800KV sheet, RCinPower features 3

• Bench data on seven props

  HQProp EthiX S3, S4 and S5, DALProp Fold F5 and 5147.5, an HQProp 5.1 × 3.1 three-blade and a Gemfan 6045 two-blade, with the temperature after 5 s at full throttle.

  Source: RCinPower 1800KV sheet, RCinPower 2500KV sheet

What to pair it with

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

ESC

The 1800KV drew up to 23.5 A at full throttle on 6S (Gemfan 6045, 76 °C) and the 2500KV up to 33.6 A on 4S (78 °C). RCinPower rates them at 25 A and 35 A; an ESC rated for 30 A per motor covers the 1800KV, and 35–40 A the 2500KV. (RCinPower 1800KV sheet, RCinPower 2500KV sheet)

Props

The 6-inch Gemfan 6045 two-blade pulled the most on both KVs: 1,835 g on 6S (1800KV) and 1,740 g on 4S (2500KV). Of the 5-inch props the HQProp 5.1 × 3.1 three-blade pulled the most; the HQProp EthiX S3 and DALProp 5147.5 were the most efficient at full throttle. (RCinPower 1800KV sheet, RCinPower 2500KV sheet)

Battery

5S–6S for the 1800KV, 3S–4S for the 2500KV. (RCinPower 1800KV sheet, RCinPower 2500KV sheet)

Frame

Four M3 screws, opposite holes 16 mm apart. (RCinPower 1800KV sheet)

Where to buy

• MyFPVStore1800KV or 2500KV, gunmetal
  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:

• Stator. 22.5 mm across and 7 mm tall, wound single-strand with single-crystal oxygen-free copper, 220-class. (RCinPower features 2)
• Bearings. 4 × 11 × 4 mm (694), larger than the usual 4 × 9 × 4 mm (684). (RCinPower features 2)
• Damping. A reworked damping design that RCinPower says cuts motor vibration and makes the bearings last longer. (RCinPower features 2)
• Shaft. 4 mm semi-hollow, with a 5 mm thread for the prop nut standing 13 mm above the bell. (RCinPower 1800KV sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1800KV 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 22.5 × 7 mm stator, 27.7 mm bell, 19.7 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: BISON (product page; its content is six images with the features, photos, spec tables, dimension drawings and bench data). Retrieved Oct 19, 2026.
2. RCinPower: Bison features 1 (image on the product page: main product photo, gunmetal with gold, and what the design is for, in Chinese); used for finish. Retrieved Oct 19, 2026.
3. RCinPower: Bison features 2 (image on the product page: stator, windings, damping and bearings, in Chinese). Retrieved Oct 19, 2026.
4. RCinPower: Bison features 3 (image on the product page: base photos of the silver and pink versions, the box, and a scale photo at 33.07 g). Retrieved Oct 19, 2026.
5. RCinPower: BISON 22.5-7 1800KV spec sheet (image on the product page: spec table, drawing, bench tables at 25.2 V with temperatures after 5 s at full throttle). Retrieved Oct 19, 2026.
6. RCinPower: BISON 22.5-7 2500KV spec sheet (image on the product page: spec table, drawing, bench tables at 16.8 V with temperatures after 5 s at full throttle). Retrieved Oct 19, 2026.