VCI Spark 1606

What it pulls

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

What you get for $14.00

• About 560–610 g at full throttle

  On VCI’s bench the 1850KV pulled 610 g on a GF D90-3 at 24 V, the 2850KV 577 g on the same prop at 16 V, and the 2300KV 564 g on a GF 5125-3 at 16 V.

  Source: VCI spec sheet

• Three KVs

  VCI sells it in 1850KV and 2300KV for 6S and 2850KV for 4S.

  Source: VCI product page, VCI spec sheet

• 14.8 g

  VCI gives 14.8 g with the cable for the 2300KV and 2850KV, and 14.9 g for the 1850KV.

  Source: VCI spec sheet

What to pair it with

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

ESC

VCI’s peak currents are 11.96 A (1850KV), 15.48 A (2300KV) and 17.12 A (2850KV); pick an ESC rated above that per motor. (VCI spec sheet)

Props

VCI tested 90 mm ducted Gemfan props (D90-3 and D90-5), a GF 3052-3 and a GF 5125-3. (VCI spec sheet)

Battery

6S for the 1850KV and 2300KV, 4S for the 2850KV, as VCI rates them. (VCI spec sheet)

Frame

Four M2 screws on a 12 × 12 mm pattern. (VCI drawing)

Where to buy

• VCI Hobbythe maker’s store; one motor, any KV
  $14.00seen Oct 19, 2026
  Visit
• WREKD2850KV
  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 VCI’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:

• Magnets. N52SH arc magnets. (VCI spec sheet)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 2850KV 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 VCI’s published sizes: the 16 × 6 mm stator, 20.6 mm bell, 15.4 mm height, 1.5 mm shaft, 12 mm mounting circle and 12 teeth and 14 magnets. Anything VCI 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. VCI Hobby: VCI SPARK 1606 MOTOR-1850KV/2300KV/2850KV (product page). Retrieved Oct 19, 2026.
2. VCI Hobby: Spark 1606 drawing (image on the product page’s Specifications tab). Retrieved Oct 19, 2026.
3. VCI Hobby: Spark 1606 spec sheets and testing data for the 1850KV (24 V, GF D90-3), the 2300KV (24 V, GF 3052-3; 16 V, GF D90-5 and GF 5125-3) and the 2850KV (16 V, GF D90-3) (image on the product page’s Specifications tab). VCI’s temperature is the shaft’s after a run from 0 to 100% throttle; its voltage column, the same on every row of a table, is left out, and so are five rows whose rpm can’t be right (see the model notes).. Retrieved Oct 19, 2026.
4. VCI Hobby: Spark 1606 1850KV product photo (first gallery image). Retrieved Oct 19, 2026.
5. VCI Hobby: Spark 1606 top-view photo (second gallery image). Retrieved Oct 19, 2026.