Drone Motors

2.5–3.5-inch cinewhoop motor

Axisflying C155 1505

A 1505 for 2.5–3.5-inch cinewhoops and open-prop builds on 3S–4S: 11.2 g with leads, and 326.2 g at full throttle on a T3.5*2.5*3 at about 12 V.

  • 2.5–3.5-inch cinewhoops and cinematic quads, on whoop or open props
  • 3S–4S
  • 2.5–3.5-inch props: 2520, 3028, D63, T3.5*2.5*3
Drawing the 3D model…

The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1505 motor drawn from Axisflying’s published sizes, not its exact design. Thrust, current and power are Axisflying’s bench figures for the T3.5*2.5*3 prop at 12.14 V, read straight across between its throttle steps. Its data starts at 30% throttle.

Max thrust
326 g
T3.5*2.5*3 prop, 12.14 V
Weight
11.2 g
with leads
Peak current
18.6 A
full throttle
Max power
220 W
full throttle

from $14.90a motor at Axisflying

A set of four: $59.60

Price seen Oct 19, 2026. Plain links: we earn nothing from them.

What it pulls

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

010020030040030%40%50%60%70%80%90%100%gthrottle326 gT3.5*2.5*3256 g3028255 g2520190 gD63

At 60% with the T3.5*2.5*3: 167 g of thrust, 6.9 A, 82 W, 2.03 g per watt.

On your quad

2.0 : 1

Thrust to weight at full throttle: four motors pull 1,305 g with the T3.5*2.5*3 at 12.14 V.

At 60% throttle they pull 670 g, 1.0 times the quad’s weight.

All-up weight is the quad ready to fly, with its battery and camera. The thrust is the maker’s static bench figure; in the air it is lower.

What you get for $14.90

  • Made for small whoops

    Axisflying designed the C155 for 2.5–3.5-inch cinewhoops and cinematic quads, on whoop or open-prop setups.

    Source: Axisflying product page

  • Multi-spoke top

    Axisflying says the multi-spoke top improves impact resistance and durability; the motor is anodised twice, in red and gun grey.

    Source: Axisflying design image

  • Inside

    Arc magnets, enamelled wire rated for 240 °C, and NMB bearings from Japan.

    Source: Axisflying feature image

  • Bench numbers

    326.2 g at 18.63 A on a T3.5*2.5*3 and 255.9 g at 14.21 A on a 3028, both at about 12 V; 255.2 g at 16.07 A on a 2520 at about 16 V.

    Source: Axisflying test data

What to pair it with

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

ESC
Axisflying's bench peaked at 18.63 A on a T3.5*2.5*3 at about 12 V; its page text gives 16.07 A. (Axisflying product page, Axisflying test data)
Props
Axisflying recommends 2520, 3028, D63 and T3.5×2.5×3 props and tested all four; the T3.5 pulled the most and ran hottest, 106.3 °C inside the motor. (Axisflying product page, Axisflying test data)
Battery
3S–4S. Axisflying benched the 2520 at about 16 V and the other props at about 12 V. (Axisflying product page, Axisflying test data)
Frame
Four M2 screws on a 9 mm circle. (Axisflying drawing and specs)

Where to buy

  • Axisflyingthe maker's store
    $14.90seen Oct 19, 2026
    Visit

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

Full specs

SpecValueSource
KV4,800 rpm/VAxisflying product page, Axisflying drawing and specs
Stator15 × 5 mm (1505) (from the 1505 in the page's title)Axisflying product page
Configuration12N14P (12 stator slots, 14 magnet poles)Axisflying product page, Axisflying drawing and specs
Battery3S–4S LiPoAxisflying product page, Axisflying drawing and specs
Weight11.2 g (with leads)Axisflying product page, Axisflying drawing and specs
Dimensionsφ19 × 13.7 mm without the shaft, which stands 2 mm above the bell (the spec table and page text give a size of ∅16 × 9 mm, which doesn't match the drawing)Axisflying drawing and specs
Shaft1.5 mm, protrudes 2 mm; 4 × M2 prop holes, 2.8 mm deep, on a 5 mm circle in the topAxisflying product page, Axisflying drawing and specs
Mounting4 × M2 on a 9 mm circleAxisflying drawing and specs
BellMulti-spoke top, anodised twice in red and gun greyAxisflying product page, Axisflying design image
MagnetsArc magnetsAxisflying product page, Axisflying feature image
BearingsNMB, made in JapanAxisflying product page, Axisflying feature image
WindingEnamelled wire rated for 240 °CAxisflying product page, Axisflying feature image
Internal resistance113.59 mΩAxisflying product page, Axisflying drawing and specs
No-load current1.25 A (at 10 V)Axisflying product page, Axisflying drawing and specs
Max current18.63 A (at full throttle on a T3.5*2.5*3 at about 11.8 V; the page text gives 16.07 A, the 2520 figure at about 15.8 V; 14.21 A (3028), 13.54 A (D63))Axisflying drawing and specs, Axisflying test data
Max power253.6 W (on a 2520 at about 15.8 V; 219.6 W (T3.5*2.5*3), 169.2 W (3028), 161.1 W (D63), all at about 12 V)Axisflying product page, Axisflying drawing and specs
Leads150 mm silicone, tinned 3 mm at the ends (the spec table and page text give 20 AWG; the drawing marks them 26 AWG, black)Axisflying product page, Axisflying drawing and specs
In the box1 motor, 7 screws (3 long, 4 short) and stickers (as pictured on the product list; the page text lists a set of mounting screws and a washer and lock-nut set)Axisflying product list

Bench data

Redrawn from Axisflying’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.

4800KV on 3S–4S4 props

PropThrottleVoltage (V)Current (A)Thrust (g)RPMPower (W)Efficiency (g/W)
T3.5*2.5*3at 12.14 Vmotor at 106.3 °C30%12.141.6151.41459619.62.62
40%12.13.1387.51865337.82.31
50%12.064.94128.62233759.62.16
60%12.026.86167.42518182.42.03
70%11.9610.07215.927969120.51.79
80%11.913.19267308011571.7
90%11.8416.61308.532785196.61.57
100%11.7918.63326.233816219.61.49
3028at 12.16 Vmotor at 74.6 °C30%12.161.21331546514.72.24
40%12.142.1958.52038126.62.2
50%12.113.4889.22498042.12.12
60%12.075.24121.82909863.31.92
70%12.036.95152.13256483.71.82
80%11.999.18193.136048110.11.75
90%11.9412.2231.339529145.61.59
100%11.914.21255.941765169.21.51
2520at 16.07 Vmotor at 86.3 °C30%16.071.2832.42083720.61.57
40%16.062.3254.92757937.21.48
50%16.033.5486.63336456.71.53
60%15.995.82121.539567931.31
70%15.947.77154.744664123.91.25
80%15.8910.66193.449574169.31.14
90%15.8214.08234.254010222.71.05
100%15.7816.07255.256480253.61.01
D63at 12.14 Vmotor at 72.6 °C30%12.141.1725.61553414.11.82
40%12.122.1946.42026326.51.75
50%12.13.5168.82494542.51.62
60%12.075.1792.62930262.41.48
70%12.037.16117.23231286.11.36
80%11.999.14142.235903109.51.3
90%11.9311.74168.939915140.11.21
100%11.913.54189.841990161.11.18

Source: Axisflying test data

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 4800KV 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.

BatteryVoltsNo-load rpm (KV × V)Electrical frequencyESC steps per second
4S nominal14.871,0408,288 Hz49,728
4S full16.880,6409,408 Hz56,448
6S nominal22.2106,56012,432 Hz74,592
6S full25.2120,96014,112 Hz84,672

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 Axisflying’s published sizes: the 15 × 5 mm stator, 19 mm bell, 13.7 mm height, 1.5 mm shaft, 9 mm mounting circle and 12 teeth and 14 magnets. Anything Axisflying 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. Axisflying: Motor C155 3-4S (product page). Retrieved Oct 19, 2026.
  2. Axisflying: C155 outline drawing and specification (image on the product page). Retrieved Oct 19, 2026.
  3. Axisflying: C155 4800KV testing data on 2520 props at about 16 V and 3028, D63 and T3.5*2.5*3 props at about 12 V (image on the product page). Each row's voltage is as measured; the table's voltage is its 30% row. Temperatures are inside the motor, with 35.5 °C ambient.. Retrieved Oct 19, 2026.
  4. Axisflying: C155 detailed features (arc magnets, 240 °C enamelled wire, NMB bearings; image on the product page). Retrieved Oct 19, 2026.
  5. Axisflying: C155 design image (double-anodised red and gun grey, multi-spoke top; on the product page). Retrieved Oct 19, 2026.
  6. Axisflying: C155 product list (image on the product page). Retrieved Oct 19, 2026.
  7. Axisflying: C155 4800KV main product photo, used for finish. Retrieved Oct 19, 2026.
  8. Axisflying: C155 top view (product photo), used for the spoke count. Retrieved Oct 19, 2026.