MEPS SZ1507.5

What it pulls

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

What you get for $16.90

• 900 g on 6S

  On MEPS's 25.2 V bench the 2680KV pulls 900.4 g at full throttle with an HQ3520, drawing 21.2 A; the 3800KV pulls 766.7 g on 16.8 V with the same prop.

  Source: MEPS data test

• 16 g with leads

  Both KVs weigh 16 g including the cable.

  Source: MEPS product page

• Named parts

  N52H arc magnets, NMB bearings that MEPS rates for up to 10,000 hours, and 220 °C high-temperature wire.

  Source: MEPS parts picture

• About 80 °C at full throttle

  MEPS says the motor stays around 80 °C during full-throttle flight.

  Source: MEPS product page

What to pair it with

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

ESC

MEPS's peak currents are 21.2 A (2680KV) and 30.1 A (3800KV, D90-3 at 16.8 V). MEPS suggests T-Hobby's F7 35A/45A AIO; a 35 A or larger ESC covers both. (MEPS product page, MEPS data test)

Props

MEPS tested an HQ3520 on both KVs and a D90-3 on the 3800KV; on 16.8 V the D90-3 draws 30.1 A for 747.2 g and the HQ3520 24.7 A for 766.7 g at full throttle. (MEPS data test)

Battery

6S for the 2680KV, 4S for the 3800KV. (MEPS product page)

Frame

Four M2 screws on a 12 mm circle (12 × 12 mm), for 3 and 4-inch frames. (MEPS size chart, MEPS product page)

Where to buy

• MEPSthe maker's store; $65.60 for four in either KV
  $16.90seen 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 MEPS’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. 5 mm, M5 × 0.8 thread 8.5 mm long, protrudes 12.6 mm above the bell. (MEPS size chart)
• Magnets. N52H arc magnets. (MEPS parts picture)
• Stator. The coils are wound on a stack of thin steel laminations: 15 × 7.5 mm (1507.5) (from the model's 1507.5 size code; the page gives no other stator figures). (MEPS product page)
• Winding. 220 °C high-temperature wire. (MEPS parts picture)
• Bearings. NMB, rated by MEPS for up to 10,000 hours. (MEPS parts picture)
• Base. 4 × M2 holes on a 12 mm circle. (MEPS size chart)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 2680KV 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 MEPS’s published sizes: the 15 × 7.5 mm stator, 20.57 mm bell, 16.5 mm height, 5 mm shaft, 12 mm mounting circle and 12 teeth and 14 magnets. Anything MEPS 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. MEPS: SZ1507.5 brushless motor for 3–4 inch FPV drone 2680KV/3800KV (product page with buying guide and spec table, MEPS's own store). Retrieved Oct 19, 2026.
2. MEPS: SZ1507.5 size chart (image on the product page). Retrieved Oct 19, 2026.
3. MEPS: SZ1507.5 data test, KV2680 with an HQ3520 prop at 25.2 V and KV3800 with D90-3 and HQ3520 props at 16.8 V, 10–100% throttle (image on the product page; its "BPM" column is rpm). Retrieved Oct 19, 2026.
4. MEPS: SZ1507.5 parts picture naming the magnets, bearings and wire (image on the product page). Retrieved Oct 19, 2026.
5. MEPS: SZ1507.5 2680KV black, main product photo, used for finish. Retrieved Oct 19, 2026.