BLDC MotorSunnySky R / E-R FPV racing series · Ø14.2 mm
R1104 KV7500
1104 7500 KV drone motor from SunnySky for 2-3S: up to 266 g thrust with a GF2035*4 prop.
Manufacturer datasheet: SunnySky · R1104 KV7500 ↗ (checked 2026-10-18)Maker profile & contacts →
Figures are copied from the maker’s published datasheet; curves are calculated from them. Confirm with the manufacturer before ordering. Not stated on the datasheet, estimated from it: rated point (estimated from KV, voltage and maximum current), resistance (fitted to the rated point), inductance, rotor inertia, insulation class, IP rating.
Applications:Drones & UAV
How this motor is made
Full manufacturing overview: 70 mm Outer-rotor BLDC Motor →Ø14.2 mm frame; built with the same process as the 70 mm outer-rotor reference series.
- 1. Stator lamination stamping & interlocking
- 2. Stator powder coating
- 3. Outer-stator winding
- 4. Terminal soldering
- 5. Stator in-process test
- 6. Trickle impregnation (optional)
- 7. Stator mounting & Hall board
- 8. Rotor cup assembly
- 9. Magnetizing
- 10. Rotor balancing
- 11. Final assembly
- 12. End-of-line test
Export certification: Low-voltage motor without electronics
- Rated power
- 147 W
- Rated torque
- 0.0217 N·m
- Rated speed
- 64,890 rpm
- Rated efficiency
- 75.3 %
Performance curves
Right axis:
SpeedEfficiency (right axis)
Calculated with the linear DC-motor model (constant 11.1 V supply, ignoring resistance rise with temperature).
Full specifications
General
- Motor type
- BLDC Motor
- Series
- SunnySky R / E-R FPV racing series
- Frame / flange
- Ø14.2 mm
Rated Values
- Rated voltage
- 11.1 V
- Rated power
- 147 W
- Rated torque
- 0.0217 N·m
- Rated speed
- 64,890 rpm
- Rated current
- 17.6 A
Performance
- Stall torque
- 0.101 N·m
- No-load speed
- 82,626 rpm
- Rated efficiency
- 75.3 %
- Peak efficiency
- 83.4 %
Electrical
- Torque constant Kt
- 0.00127 N·m/A
- Back-EMF constant Ke
- 0.133 V/krpm
- Resistance
- 0.139 Ω
- Inductance
- 0.208 mH
- No-load current
- 0.6 A
- Stall current
- 80 A
- Poles
- 12
- Electrical time constant
- 1.5 ms
Mechanical
- Body length
- 11.6 mm
- Shaft diameter
- 1.5 mm
- Weight
- 0.0065 kg
- Power density
- 22,686 W/kg
- Protection
- IP40
Compatible drivers
All drivers →Drivers whose supply voltage covers this motor and whose continuous current is at least its rated current; drivers from the same maker first. Confirm Hall/encoder type and settings with the maker.
| Model | Maker | Motor type | Supply | Cont. / peak current | Feedback |
|---|---|---|---|---|---|
| ZM-BL12Z30S | Zeming | BLDC | 10–16 V DC | 30 A | Hall sensors, Sensorless |
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