Drone Motors

3–3.5-inch cinewhoop and toothpick motor

Axisflying C204 2004

A 2004 for 3–3.5-inch cinewhoops, ultralight freestyle and toothpicks: 15 g with leads, 3500KV for 4S or 2650KV for 6S, and 908.7 g at full throttle on a GF D76R5B (3500KV).

  • 3–3.5-inch cinewhoops, ultralight freestyle and toothpicks
  • 4S (3500KV) or 6S (2650KV)
  • 76 mm whoop props such as the GF D76R5B and HQ DT76X4
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 2004 motor drawn from Axisflying’s published sizes, not its exact design. Thrust, current and power are Axisflying’s bench figures for the GF D76R5B prop at 16.02 V, read straight across between its throttle steps. Its data starts at 30% throttle.

Version

908.7 g at 34.49 A at full throttle on a GF D76R5B at about 15.5 V.

Max thrust
909 g
GF D76R5B prop, 16.02 V
Weight
15 g
with leads (3500KV); 18.36 g (2650KV), 15.5 g (2910KV)
Peak current
34.5 A
full throttle
Max power
534 W
full throttle

from $19.90a motor at Axisflying

A set of four: $79.60

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.

02505007501,00030%40%50%60%70%80%90%100%gthrottle909 gGF D76R5B

At 60% with the GF D76R5B: 578 g of thrust, 14.5 A, 229 W, 2.53 g per watt.

On your quad

5.6 : 1

Thrust to weight at full throttle: four motors pull 3,635 g with the GF D76R5B at 16.02 V.

At 60% throttle they pull 2,313 g, 3.6 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 $19.90

What to pair it with

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

ESC
The 3500KV peaked at 34.49 A on 4S on Axisflying's bench; the 2650KV at 23.27 A on 6S. (Axisflying drawing, specs and test data)
Props
Axisflying tested the 3500KV and 2910KV on GF D76R5B props and the 2650KV on an HQ DT76X4. (Axisflying drawing, specs and test data)
Battery
4S for the 3500KV, 6S for the 2650KV. (Axisflying drawing, specs and test data)
Frame
Four M2 screws on a 12 mm circle; four M2×5 screws come in the box. (Axisflying product page, Axisflying drawing, specs and test data)

Where to buy

  • Axisflyingthe maker's store; same price for 3500KV and 2650KV
    $19.90seen Oct 19, 2026
    Visit

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

Full specs

SpecValueSource
KV3,500 rpm/V (also 2650KV; Axisflying's spec image adds a 2910KV, which its store doesn't sell)Axisflying product page, Axisflying drawing, specs and test data
Stator20 × 4 mm (2004) (from the 2004 in Axisflying's name)Axisflying product page
Configuration12N14P (12 stator slots, 14 magnet poles)Axisflying drawing, specs and test data
Battery4S LiPo (for the 3500KV; 6S for the 2650KV, 4–6S for the 2910KV)Axisflying drawing, specs and test data
Weight15 g (with leads (3500KV); 18.36 g (2650KV), 15.5 g (2910KV))Axisflying drawing, specs and test data
Dimensionsφ24.7 × 17.4 mm, with 3 mm of shaft above the bellAxisflying drawing, specs and test data
Shaft1.5 mm, protrudes 3 mm; 4 × M2 prop holes on a 5 mm circle in the topAxisflying drawing, specs and test data
Mounting4 × M2 on a 12 mm circleAxisflying drawing, specs and test data
Internal resistance55 mΩ (106.5 mΩ (2650KV), 102 mΩ (2910KV))Axisflying drawing, specs and test data
Max current34.5 A (the bench gives 34.49 A at full throttle on a GF D76R5B at about 15.5 V; 23.27 A (2650KV), 31.6 A (2910KV))Axisflying drawing, specs and test data
Max power533.6 W (550.69 W (2650KV), 745.1 W (2910KV))Axisflying drawing, specs and test data
Leads20 AWG silicone, 150 mmAxisflying drawing, specs and test data
In the box1 motor, 4 × M2×5 motor screws, 1 × M2×4 shaft-lock screw, 2 × M2×7 prop screws, 1 O-ring, 1 washerAxisflying product page, Axisflying drawing, specs and test data

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.

2650KV on 6S, 24.01 V1 prop

PropThrottleVoltage (V)Current (A)Thrust (g)RPMPower (W)Efficiency (g/W)
HQ DT76X430%24.011.48109.241714335.533.07
40%23.982.91186.052214769.82.67
50%23.955.05278.8727015120.882.31
60%23.927.71374.5430943184.492.03
70%23.8610.2470.3234627243.411.93
80%23.7813.92606.3939306330.921.83
90%23.7218.92773.6744070448.871.72
100%23.6723.27881.0847167550.691.6

Source: Axisflying drawing, specs and test data

2910KV on 4S–6S, 24.04 V1 prop

PropThrottleVoltage (V)Current (A)Thrust (g)RPMPower (W)Efficiency (g/W)
GF D76R5B30%24.043.61266.51749486.783.07
40%24.016.4430.322278153.662.8
50%23.969.82581.726404235.292.47
60%23.8913.6660.530553324.92.03
70%23.8416.7173533548398.371.85
80%23.7421.5979837195512.551.56
90%23.6727.11840.241731641.691.31
100%23.5531.64895.744097745.121.2

Source: Axisflying drawing, specs and test data

3500KV on 4S, 16.02 V1 prop

PropThrottleVoltage (V)Current (A)Thrust (g)RPMPower (W)Efficiency (g/W)
GF D76R5B30%16.023.11156.51654749.823.14
40%15.965.9272.72117594.162.9
50%15.899.64414.724941153.182.71
60%15.7814.5578.328804228.812.53
70%15.7519.04630.331802299.882.1
80%15.6622.19682.834357347.51.96
90%15.5928.39770.438021442.61.74
100%15.4734.49908.740737533.561.7

Source: Axisflying drawing, specs and 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 3500KV 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 nominal14.851,8006,043 Hz36,260
4S full16.858,8006,860 Hz41,160
6S nominal22.277,7009,065 Hz54,390
6S full25.288,20010,290 Hz61,740

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 20 × 4 mm stator, 24.7 mm bell, 14.4 mm height, 1.5 mm shaft, 12 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 C204 4-6s (product page). Retrieved Oct 19, 2026.
  2. Axisflying: Cine204 intro, outline drawing, spec tables (2910KV, 2650KV, 3500KV), testing data for 2910KV and 3500KV on GF D76R5B props and 2650KV on an HQ DT76X4, and product list (one long image on the product page). Each row's voltage is as measured; the table's voltage is its 30% row.. Retrieved Oct 19, 2026.
  3. Axisflying: C204 main product photo (marked 2910KV), used for finish. Retrieved Oct 19, 2026.
  4. Axisflying: C204 top view (product photo), used for the spoke count. Retrieved Oct 19, 2026.