GEPRC SPEEDX2 2809 V1.1

What it pulls

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

What you get for $29.99

• 2.9 kg on 6S

  The 1280KV pulled 2,883 g at full throttle on an 8*4*3 prop at about 24.5 V, drawing 59.06 A.

  Source: GEPRC 1280KV datasheet

• Smaller than version 1.0

  GEPRC’s comparison gives version 1.1 as 34.2 mm across and 21.7 mm tall without the shaft, against 36 mm and 22.4 mm for version 1.0.

  Source: GEPRC features image

• Heat-treated 5 mm shaft

  GEPRC carburises and heat-treats the 5 mm shaft, which has an M5 thread and stands 15 mm above the bell.

  Source: GEPRC drawing, GEPRC features image

• Damping O-ring

  An O-ring that GEPRC says reduces vibration and lengthens bearing life.

  Source: GEPRC features image

What to pair it with

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

ESC

GEPRC recommends a 50–70 A ESC. Its tables peak at 59.06 A (1280KV on an 8*4*3) and 60.88 A (1450KV on a 7*4*3). (GEPRC 1450KV spec image, GEPRC 1280KV spec image, GEPRC 1450KV data sheet, GEPRC 1280KV datasheet)

Props

7 to 8-inch. GEPRC tested the 1280KV on 7*4*3, 7.5*3.7*3 and 8*4*3 props, where the 8-inch pulled most, and the 1450KV on 7*4*3, 7.5*3.7*3 and 7.5*3*3, where the 7.5*3*3 pulled most. (GEPRC 1450KV data sheet, GEPRC 1280KV datasheet)

Battery

6S (25.2 V). (GEPRC product page, GEPRC 1450KV spec image, GEPRC 1280KV spec image)

Frame

Four M3 holes on a 19 × 19 mm pattern; GEPRC names 7 to 7.5-inch long-range frames and X8 builds. (GEPRC product page, GEPRC drawing)

Where to buy

• GEPRCthe maker’s store; 1280KV or 1450KV, same price
  $29.99seen Oct 19, 2026
  Visit

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

Full specs

Bench data

Redrawn from GEPRC’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:

• Bell. A CNC-machined 7075 aluminium rotor, black with red trim, with reinforced edges that GEPRC says resist impacts. (GEPRC product page, GEPRC 1450KV spec image)
• Stator. 28 × 9 mm in 0.2 mm Kawasaki silicon steel, 12N14P, with single-strand copper windings and N52H arc magnets. (GEPRC product page, GEPRC 1450KV spec image, GEPRC features image)
• Base. A reinforced 3 mm base with four M3 holes, which GEPRC says is more collision-resistant. (GEPRC drawing, GEPRC features image)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 1280KV 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 GEPRC’s published sizes: the 28 × 9 mm stator, 34.2 mm bell, 21.7 mm height, 5 mm shaft, 19 mm mounting circle and 12 teeth and 14 magnets. Anything GEPRC 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. GEPRC: SPEEDX2 2809 V1.1 Motor (product page, with the 1450KV spec list). Retrieved Oct 19, 2026.
2. GEPRC: SPEEDX2 2809 1450KV specifications (image on the product page). Retrieved Oct 19, 2026.
3. GEPRC: SPEEDX2 2809 1280KV specifications (image on the product page). Retrieved Oct 19, 2026.
4. GEPRC: SPEEDX2 2809 V1.1 product drawing (image on the product page). Retrieved Oct 19, 2026.
5. GEPRC: SPEEDX2 2809 1450KV motor data sheet at 25 V on 7*4*3, 7.5*3.7*3 and 7.5*3*3 props, 50–100% throttle (image on the product page). GEPRC gives one motor temperature per prop, without saying after how long. The 7.5*3*3 table’s 60% row is left out (see modelNotes).. Retrieved Oct 19, 2026.
6. GEPRC: SPEEDX2 2809 1280KV datasheet on 7*4*3, 7.5*3.7*3 and 8*4*3 props, 50–100% throttle at about 24.4–24.9 V (image on the product page). Each row’s voltage is as measured; the table’s voltage is its 50% row. GEPRC gives one motor temperature per prop, without saying after how long.. Retrieved Oct 19, 2026.
7. GEPRC: SPEEDX2 2809 V1.1 features (N52H arc magnets, stator, damping O-ring; image on the product page). Retrieved Oct 19, 2026.
8. GEPRC: SPEEDX2 2809 V1.1 features (heat-treated 5 mm shaft, reinforced base) and size comparison with version 1.0 (image on the product page). Retrieved Oct 19, 2026.
9. GEPRC: SPEEDX2 2809 V1.1 sizes and lead length, and the parts in the box (image on the product page). Retrieved Oct 19, 2026.
10. GEPRC: SPEEDX2 2809 V1.1 1450KV product photo (first gallery image). Retrieved Oct 19, 2026.
11. GEPRC: SPEEDX2 2809 V1.1 from above, showing the five-spoke top (gallery image). Retrieved Oct 19, 2026.